/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_3.cil+token_ring.02.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:35:54,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:35:54,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:35:54,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:35:54,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:35:54,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:35:54,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:35:54,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:35:54,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:35:54,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:35:54,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:35:54,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:35:54,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:35:54,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:35:54,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:35:54,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:35:54,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:35:54,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:35:54,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:35:54,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:35:54,130 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 02:35:54,142 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:35:54,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:35:54,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:35:54,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:35:54,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:35:54,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:35:54,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:35:54,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:35:54,144 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:35:54,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:35:54,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:35:54,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:35:54,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:35:54,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:35:54,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:35:54,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:35:54,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:35:54,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:35:54,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:35:54,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:35:54,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:35:54,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:35:54,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:35:54,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:35:54,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:35:54,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:35:54,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:35:54,147 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:35:54,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:35:54,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:35:54,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:35:54,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:35:54,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:35:54,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:35:54,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:35:54,315 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:35:54,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c [2022-01-10 02:35:54,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c967963/1df254c4ed514342a8c79c3d2bbbf64a/FLAG373026285 [2022-01-10 02:35:54,750 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:35:54,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c [2022-01-10 02:35:54,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c967963/1df254c4ed514342a8c79c3d2bbbf64a/FLAG373026285 [2022-01-10 02:35:54,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c967963/1df254c4ed514342a8c79c3d2bbbf64a [2022-01-10 02:35:54,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:35:54,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:35:54,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:35:54,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:35:54,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:35:54,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:54" (1/1) ... [2022-01-10 02:35:54,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec627cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:54, skipping insertion in model container [2022-01-10 02:35:54,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:54" (1/1) ... [2022-01-10 02:35:54,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:35:54,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:35:54,953 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[911,924] [2022-01-10 02:35:54,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[8416,8429] [2022-01-10 02:35:55,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:35:55,024 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:35:55,032 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[911,924] [2022-01-10 02:35:55,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[8416,8429] [2022-01-10 02:35:55,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:35:55,081 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:35:55,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55 WrapperNode [2022-01-10 02:35:55,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:35:55,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:35:55,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:35:55,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:35:55,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (1/1) ... [2022-01-10 02:35:55,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (1/1) ... [2022-01-10 02:35:55,121 INFO L137 Inliner]: procedures = 59, calls = 67, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 498 [2022-01-10 02:35:55,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:35:55,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:35:55,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:35:55,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:35:55,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (1/1) ... [2022-01-10 02:35:55,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (1/1) ... [2022-01-10 02:35:55,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (1/1) ... [2022-01-10 02:35:55,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (1/1) ... [2022-01-10 02:35:55,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (1/1) ... [2022-01-10 02:35:55,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (1/1) ... [2022-01-10 02:35:55,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (1/1) ... [2022-01-10 02:35:55,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:35:55,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:35:55,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:35:55,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:35:55,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (1/1) ... [2022-01-10 02:35:55,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:35:55,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:35:55,207 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 02:35:55,216 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 02:35:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:35:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:35:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:35:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 02:35:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 02:35:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 02:35:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 02:35:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 02:35:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 02:35:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 02:35:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 02:35:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 02:35:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 02:35:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 02:35:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 02:35:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 02:35:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 02:35:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 02:35:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 02:35:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 02:35:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 02:35:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 02:35:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 02:35:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:35:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 02:35:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 02:35:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 02:35:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 02:35:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:35:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:35:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 02:35:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 02:35:55,334 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:35:55,336 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:35:55,635 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-01-10 02:35:55,636 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-01-10 02:35:55,683 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:35:55,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:35:55,690 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 02:35:55,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:55 BoogieIcfgContainer [2022-01-10 02:35:55,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:35:55,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:35:55,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:35:55,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:35:55,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:35:54" (1/3) ... [2022-01-10 02:35:55,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1342a200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:55, skipping insertion in model container [2022-01-10 02:35:55,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:55" (2/3) ... [2022-01-10 02:35:55,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1342a200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:55, skipping insertion in model container [2022-01-10 02:35:55,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:55" (3/3) ... [2022-01-10 02:35:55,699 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.02.cil-1.c [2022-01-10 02:35:55,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:35:55,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:35:55,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:35:55,742 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 02:35:55,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:35:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 200 states have (on average 1.555) internal successors, (311), 206 states have internal predecessors, (311), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-10 02:35:55,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:35:55,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:55,766 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 02:35:55,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:55,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1783891232, now seen corresponding path program 1 times [2022-01-10 02:35:55,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:55,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112548969] [2022-01-10 02:35:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:55,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:55,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:35:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:56,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:35:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:35:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:56,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:35:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:35:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:56,121 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 02:35:56,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:56,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112548969] [2022-01-10 02:35:56,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112548969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:56,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:56,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:35:56,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501055559] [2022-01-10 02:35:56,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:56,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:35:56,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:56,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:35:56,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:35:56,152 INFO L87 Difference]: Start difference. First operand has 249 states, 200 states have (on average 1.555) internal successors, (311), 206 states have internal predecessors, (311), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) 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 02:35:56,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:56,906 INFO L93 Difference]: Finished difference Result 631 states and 957 transitions. [2022-01-10 02:35:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:56,908 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 02:35:56,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:56,927 INFO L225 Difference]: With dead ends: 631 [2022-01-10 02:35:56,927 INFO L226 Difference]: Without dead ends: 390 [2022-01-10 02:35:56,931 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 02:35:56,933 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 515 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:56,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1334 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:35:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-01-10 02:35:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 351. [2022-01-10 02:35:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 282 states have (on average 1.446808510638298) internal successors, (408), 288 states have internal predecessors, (408), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2022-01-10 02:35:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 501 transitions. [2022-01-10 02:35:57,003 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 501 transitions. Word has length 65 [2022-01-10 02:35:57,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:57,003 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 501 transitions. [2022-01-10 02:35:57,004 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 02:35:57,004 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 501 transitions. [2022-01-10 02:35:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:35:57,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:57,007 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 02:35:57,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:35:57,007 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash -832187424, now seen corresponding path program 1 times [2022-01-10 02:35:57,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475312969] [2022-01-10 02:35:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:57,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:57,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:35:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:35:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:57,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:57,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:35:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:35:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:57,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:35:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:57,169 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 02:35:57,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:57,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475312969] [2022-01-10 02:35:57,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475312969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:57,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:57,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:35:57,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345705296] [2022-01-10 02:35:57,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:57,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:35:57,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:57,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:35:57,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:35:57,172 INFO L87 Difference]: Start difference. First operand 351 states and 501 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-10 02:35:58,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:58,547 INFO L93 Difference]: Finished difference Result 1384 states and 1961 transitions. [2022-01-10 02:35:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 02:35:58,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-01-10 02:35:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:58,556 INFO L225 Difference]: With dead ends: 1384 [2022-01-10 02:35:58,556 INFO L226 Difference]: Without dead ends: 1163 [2022-01-10 02:35:58,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 02:35:58,567 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 2085 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:58,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 1909 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:35:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-01-10 02:35:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1024. [2022-01-10 02:35:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 825 states have (on average 1.3903030303030304) internal successors, (1147), 839 states have internal predecessors, (1147), 116 states have call successors, (116), 74 states have call predecessors, (116), 81 states have return successors, (128), 112 states have call predecessors, (128), 114 states have call successors, (128) [2022-01-10 02:35:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1391 transitions. [2022-01-10 02:35:58,634 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1391 transitions. Word has length 65 [2022-01-10 02:35:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:58,635 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 1391 transitions. [2022-01-10 02:35:58,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-10 02:35:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1391 transitions. [2022-01-10 02:35:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:35:58,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:58,644 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 02:35:58,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:35:58,644 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:58,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:58,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1785966606, now seen corresponding path program 1 times [2022-01-10 02:35:58,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:58,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477276633] [2022-01-10 02:35:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:58,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:35:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:58,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:35:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:58,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:58,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:35:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:58,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-10 02:35:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:58,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:35:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:58,792 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 02:35:58,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:58,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477276633] [2022-01-10 02:35:58,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477276633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:58,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:58,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:35:58,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564824382] [2022-01-10 02:35:58,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:58,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:35:58,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:35:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:35:58,794 INFO L87 Difference]: Start difference. First operand 1024 states and 1391 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 02:35:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:59,351 INFO L93 Difference]: Finished difference Result 2050 states and 2785 transitions. [2022-01-10 02:35:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:35:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-01-10 02:35:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:59,357 INFO L225 Difference]: With dead ends: 2050 [2022-01-10 02:35:59,357 INFO L226 Difference]: Without dead ends: 1162 [2022-01-10 02:35:59,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:59,364 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 266 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:59,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 1505 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:35:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-10 02:35:59,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1054. [2022-01-10 02:35:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 849 states have (on average 1.375736160188457) internal successors, (1168), 863 states have internal predecessors, (1168), 116 states have call successors, (116), 74 states have call predecessors, (116), 87 states have return successors, (134), 118 states have call predecessors, (134), 114 states have call successors, (134) [2022-01-10 02:35:59,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1418 transitions. [2022-01-10 02:35:59,421 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1418 transitions. Word has length 66 [2022-01-10 02:35:59,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:59,422 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1418 transitions. [2022-01-10 02:35:59,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 02:35:59,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1418 transitions. [2022-01-10 02:35:59,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:35:59,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:59,425 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 02:35:59,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:35:59,425 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:59,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1479641392, now seen corresponding path program 1 times [2022-01-10 02:35:59,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:59,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938968603] [2022-01-10 02:35:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:59,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:59,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:35:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:35:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:35:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:59,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-10 02:35:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:59,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:35:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:59,552 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 02:35:59,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:59,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938968603] [2022-01-10 02:35:59,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938968603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:59,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:59,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:35:59,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486720181] [2022-01-10 02:35:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:59,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:35:59,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:35:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:35:59,554 INFO L87 Difference]: Start difference. First operand 1054 states and 1418 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-10 02:36:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:00,918 INFO L93 Difference]: Finished difference Result 3392 states and 4605 transitions. [2022-01-10 02:36:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 02:36:00,919 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-01-10 02:36:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:00,925 INFO L225 Difference]: With dead ends: 3392 [2022-01-10 02:36:00,925 INFO L226 Difference]: Without dead ends: 1297 [2022-01-10 02:36:00,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 02:36:00,936 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 2436 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:00,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2456 Valid, 1691 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:36:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-01-10 02:36:00,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1142. [2022-01-10 02:36:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 902 states have (on average 1.335920177383592) internal successors, (1205), 916 states have internal predecessors, (1205), 136 states have call successors, (136), 88 states have call predecessors, (136), 102 states have return successors, (155), 139 states have call predecessors, (155), 134 states have call successors, (155) [2022-01-10 02:36:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1496 transitions. [2022-01-10 02:36:00,981 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1496 transitions. Word has length 66 [2022-01-10 02:36:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:00,982 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1496 transitions. [2022-01-10 02:36:00,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-10 02:36:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1496 transitions. [2022-01-10 02:36:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:36:00,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:00,983 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] [2022-01-10 02:36:00,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:36:00,984 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash 864637062, now seen corresponding path program 1 times [2022-01-10 02:36:00,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:00,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67031089] [2022-01-10 02:36:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:00,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,057 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 02:36:01,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:01,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67031089] [2022-01-10 02:36:01,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67031089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:01,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:01,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:36:01,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098240698] [2022-01-10 02:36:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:01,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:36:01,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:01,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:36:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:36:01,059 INFO L87 Difference]: Start difference. First operand 1142 states and 1496 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 02:36:01,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:01,636 INFO L93 Difference]: Finished difference Result 1438 states and 1943 transitions. [2022-01-10 02:36:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:36:01,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 68 [2022-01-10 02:36:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:01,641 INFO L225 Difference]: With dead ends: 1438 [2022-01-10 02:36:01,641 INFO L226 Difference]: Without dead ends: 1321 [2022-01-10 02:36:01,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:01,643 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 648 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:01,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 883 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:36:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2022-01-10 02:36:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1258. [2022-01-10 02:36:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1000 states have (on average 1.351) internal successors, (1351), 1015 states have internal predecessors, (1351), 147 states have call successors, (147), 94 states have call predecessors, (147), 109 states have return successors, (169), 150 states have call predecessors, (169), 145 states have call successors, (169) [2022-01-10 02:36:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1667 transitions. [2022-01-10 02:36:01,703 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1667 transitions. Word has length 68 [2022-01-10 02:36:01,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:01,704 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 1667 transitions. [2022-01-10 02:36:01,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 02:36:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1667 transitions. [2022-01-10 02:36:01,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:36:01,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:01,705 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] [2022-01-10 02:36:01,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:36:01,705 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2043544824, now seen corresponding path program 1 times [2022-01-10 02:36:01,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:01,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924774208] [2022-01-10 02:36:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:01,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:01,792 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 02:36:01,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:01,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924774208] [2022-01-10 02:36:01,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924774208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:01,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:01,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:01,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960082497] [2022-01-10 02:36:01,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:01,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:01,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:01,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:01,794 INFO L87 Difference]: Start difference. First operand 1258 states and 1667 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:02,504 INFO L93 Difference]: Finished difference Result 1701 states and 2327 transitions. [2022-01-10 02:36:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:36:02,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-01-10 02:36:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:02,509 INFO L225 Difference]: With dead ends: 1701 [2022-01-10 02:36:02,509 INFO L226 Difference]: Without dead ends: 1468 [2022-01-10 02:36:02,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:36:02,511 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 642 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:02,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 1270 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:36:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2022-01-10 02:36:02,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1367. [2022-01-10 02:36:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1091 states have (on average 1.3593033913840513) internal successors, (1483), 1107 states have internal predecessors, (1483), 158 states have call successors, (158), 100 states have call predecessors, (158), 116 states have return successors, (182), 162 states have call predecessors, (182), 156 states have call successors, (182) [2022-01-10 02:36:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1823 transitions. [2022-01-10 02:36:02,555 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1823 transitions. Word has length 68 [2022-01-10 02:36:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:02,555 INFO L470 AbstractCegarLoop]: Abstraction has 1367 states and 1823 transitions. [2022-01-10 02:36:02,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1823 transitions. [2022-01-10 02:36:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:36:02,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:02,556 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] [2022-01-10 02:36:02,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:36:02,557 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:02,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1167525818, now seen corresponding path program 1 times [2022-01-10 02:36:02,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:02,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040049645] [2022-01-10 02:36:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:02,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:02,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:02,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:02,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:02,658 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 02:36:02,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:02,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040049645] [2022-01-10 02:36:02,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040049645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:02,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:02,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:02,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126210529] [2022-01-10 02:36:02,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:02,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:02,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:02,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:02,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:02,659 INFO L87 Difference]: Start difference. First operand 1367 states and 1823 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:03,043 INFO L93 Difference]: Finished difference Result 1808 states and 2485 transitions. [2022-01-10 02:36:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:36:03,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-01-10 02:36:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:03,049 INFO L225 Difference]: With dead ends: 1808 [2022-01-10 02:36:03,049 INFO L226 Difference]: Without dead ends: 1466 [2022-01-10 02:36:03,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:03,051 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 644 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:03,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 716 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:36:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-01-10 02:36:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1367. [2022-01-10 02:36:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1091 states have (on average 1.3565536205316224) internal successors, (1480), 1107 states have internal predecessors, (1480), 158 states have call successors, (158), 100 states have call predecessors, (158), 116 states have return successors, (182), 162 states have call predecessors, (182), 156 states have call successors, (182) [2022-01-10 02:36:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1820 transitions. [2022-01-10 02:36:03,104 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1820 transitions. Word has length 68 [2022-01-10 02:36:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:03,105 INFO L470 AbstractCegarLoop]: Abstraction has 1367 states and 1820 transitions. [2022-01-10 02:36:03,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1820 transitions. [2022-01-10 02:36:03,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:36:03,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:03,109 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] [2022-01-10 02:36:03,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:36:03,109 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash 370814212, now seen corresponding path program 1 times [2022-01-10 02:36:03,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:03,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227580627] [2022-01-10 02:36:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:03,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:03,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:03,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:03,177 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 02:36:03,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:03,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227580627] [2022-01-10 02:36:03,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227580627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:03,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:03,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:03,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354556782] [2022-01-10 02:36:03,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:03,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:03,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:03,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:03,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:03,179 INFO L87 Difference]: Start difference. First operand 1367 states and 1820 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:03,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:03,897 INFO L93 Difference]: Finished difference Result 2132 states and 2941 transitions. [2022-01-10 02:36:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:36:03,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-01-10 02:36:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:03,905 INFO L225 Difference]: With dead ends: 2132 [2022-01-10 02:36:03,905 INFO L226 Difference]: Without dead ends: 1790 [2022-01-10 02:36:03,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:36:03,907 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 685 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:03,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1238 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:36:03,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-01-10 02:36:03,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1576. [2022-01-10 02:36:03,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1266 states have (on average 1.3688783570300158) internal successors, (1733), 1284 states have internal predecessors, (1733), 178 states have call successors, (178), 112 states have call predecessors, (178), 130 states have return successors, (210), 184 states have call predecessors, (210), 176 states have call successors, (210) [2022-01-10 02:36:03,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2121 transitions. [2022-01-10 02:36:03,964 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2121 transitions. Word has length 68 [2022-01-10 02:36:03,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:03,964 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 2121 transitions. [2022-01-10 02:36:03,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:03,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2121 transitions. [2022-01-10 02:36:03,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:36:03,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:03,965 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] [2022-01-10 02:36:03,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:36:03,965 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:03,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:03,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1657771898, now seen corresponding path program 1 times [2022-01-10 02:36:03,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:03,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727123206] [2022-01-10 02:36:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:03,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:03,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:04,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:04,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:04,026 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 02:36:04,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:04,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727123206] [2022-01-10 02:36:04,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727123206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:04,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:04,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:04,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786935313] [2022-01-10 02:36:04,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:04,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:04,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:04,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:04,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:04,028 INFO L87 Difference]: Start difference. First operand 1576 states and 2121 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:04,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:04,796 INFO L93 Difference]: Finished difference Result 2835 states and 3948 transitions. [2022-01-10 02:36:04,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:36:04,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-01-10 02:36:04,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:04,807 INFO L225 Difference]: With dead ends: 2835 [2022-01-10 02:36:04,807 INFO L226 Difference]: Without dead ends: 2284 [2022-01-10 02:36:04,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:36:04,812 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 631 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:04,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 1250 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:36:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2022-01-10 02:36:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 1997. [2022-01-10 02:36:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1621 states have (on average 1.3861813695249845) internal successors, (2247), 1643 states have internal predecessors, (2247), 216 states have call successors, (216), 136 states have call predecessors, (216), 158 states have return successors, (270), 226 states have call predecessors, (270), 214 states have call successors, (270) [2022-01-10 02:36:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2733 transitions. [2022-01-10 02:36:04,902 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2733 transitions. Word has length 68 [2022-01-10 02:36:04,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:04,903 INFO L470 AbstractCegarLoop]: Abstraction has 1997 states and 2733 transitions. [2022-01-10 02:36:04,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2733 transitions. [2022-01-10 02:36:04,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:36:04,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:04,904 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] [2022-01-10 02:36:04,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:36:04,904 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:04,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:04,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2138852156, now seen corresponding path program 1 times [2022-01-10 02:36:04,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:04,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109021689] [2022-01-10 02:36:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:04,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:04,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:04,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:04,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:04,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:04,983 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 02:36:04,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:04,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109021689] [2022-01-10 02:36:04,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109021689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:04,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:04,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:04,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704727224] [2022-01-10 02:36:04,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:04,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:04,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:04,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:04,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:04,985 INFO L87 Difference]: Start difference. First operand 1997 states and 2733 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:05,598 INFO L93 Difference]: Finished difference Result 3506 states and 4960 transitions. [2022-01-10 02:36:05,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:36:05,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-01-10 02:36:05,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:05,608 INFO L225 Difference]: With dead ends: 3506 [2022-01-10 02:36:05,608 INFO L226 Difference]: Without dead ends: 2535 [2022-01-10 02:36:05,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:36:05,612 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 373 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:05,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 1109 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:36:05,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2022-01-10 02:36:05,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 2024. [2022-01-10 02:36:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 1648 states have (on average 1.3798543689320388) internal successors, (2274), 1670 states have internal predecessors, (2274), 216 states have call successors, (216), 136 states have call predecessors, (216), 158 states have return successors, (270), 226 states have call predecessors, (270), 214 states have call successors, (270) [2022-01-10 02:36:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2760 transitions. [2022-01-10 02:36:05,730 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2760 transitions. Word has length 68 [2022-01-10 02:36:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:05,730 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 2760 transitions. [2022-01-10 02:36:05,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2760 transitions. [2022-01-10 02:36:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:36:05,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:05,732 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] [2022-01-10 02:36:05,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:36:05,732 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:05,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:05,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1715205434, now seen corresponding path program 1 times [2022-01-10 02:36:05,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:05,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132393943] [2022-01-10 02:36:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:05,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:05,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:05,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:05,831 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 02:36:05,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:05,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132393943] [2022-01-10 02:36:05,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132393943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:05,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:05,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:05,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708933504] [2022-01-10 02:36:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:05,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:05,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:05,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:05,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:05,833 INFO L87 Difference]: Start difference. First operand 2024 states and 2760 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:07,101 INFO L93 Difference]: Finished difference Result 5491 states and 7964 transitions. [2022-01-10 02:36:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 02:36:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-01-10 02:36:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:07,117 INFO L225 Difference]: With dead ends: 5491 [2022-01-10 02:36:07,117 INFO L226 Difference]: Without dead ends: 4493 [2022-01-10 02:36:07,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:36:07,122 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 1409 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:07,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 1105 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:36:07,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-01-10 02:36:07,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 3942. [2022-01-10 02:36:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3244 states have (on average 1.3982737361282367) internal successors, (4536), 3297 states have internal predecessors, (4536), 408 states have call successors, (408), 250 states have call predecessors, (408), 288 states have return successors, (579), 403 states have call predecessors, (579), 406 states have call successors, (579) [2022-01-10 02:36:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5523 transitions. [2022-01-10 02:36:07,315 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5523 transitions. Word has length 68 [2022-01-10 02:36:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:07,316 INFO L470 AbstractCegarLoop]: Abstraction has 3942 states and 5523 transitions. [2022-01-10 02:36:07,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 02:36:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5523 transitions. [2022-01-10 02:36:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:36:07,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:07,320 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:07,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:36:07,320 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash 163766987, now seen corresponding path program 1 times [2022-01-10 02:36:07,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214766308] [2022-01-10 02:36:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:07,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:07,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:07,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:07,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:07,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:07,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-10 02:36:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 02:36:07,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:07,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214766308] [2022-01-10 02:36:07,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214766308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:07,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:07,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:36:07,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925368747] [2022-01-10 02:36:07,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:07,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:36:07,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:07,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:36:07,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:36:07,409 INFO L87 Difference]: Start difference. First operand 3942 states and 5523 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 02:36:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:07,990 INFO L93 Difference]: Finished difference Result 5119 states and 7074 transitions. [2022-01-10 02:36:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:36:07,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-01-10 02:36:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:08,004 INFO L225 Difference]: With dead ends: 5119 [2022-01-10 02:36:08,004 INFO L226 Difference]: Without dead ends: 4113 [2022-01-10 02:36:08,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:36:08,007 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 259 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:08,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 1451 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:36:08,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2022-01-10 02:36:08,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 3982. [2022-01-10 02:36:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3276 states have (on average 1.3934676434676434) internal successors, (4565), 3329 states have internal predecessors, (4565), 408 states have call successors, (408), 250 states have call predecessors, (408), 296 states have return successors, (587), 411 states have call predecessors, (587), 406 states have call successors, (587) [2022-01-10 02:36:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 5560 transitions. [2022-01-10 02:36:08,202 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 5560 transitions. Word has length 91 [2022-01-10 02:36:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:08,203 INFO L470 AbstractCegarLoop]: Abstraction has 3982 states and 5560 transitions. [2022-01-10 02:36:08,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 02:36:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 5560 transitions. [2022-01-10 02:36:08,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:36:08,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:08,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:08,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:36:08,206 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash 607667661, now seen corresponding path program 1 times [2022-01-10 02:36:08,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:08,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572346708] [2022-01-10 02:36:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:08,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:08,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:08,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:08,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:08,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:08,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:08,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:08,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-10 02:36:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 02:36:08,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:08,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572346708] [2022-01-10 02:36:08,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572346708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:08,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:08,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:36:08,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595024436] [2022-01-10 02:36:08,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:08,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:36:08,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:08,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:36:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:08,270 INFO L87 Difference]: Start difference. First operand 3982 states and 5560 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 02:36:09,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:09,014 INFO L93 Difference]: Finished difference Result 6020 states and 8165 transitions. [2022-01-10 02:36:09,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 02:36:09,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 91 [2022-01-10 02:36:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:09,032 INFO L225 Difference]: With dead ends: 6020 [2022-01-10 02:36:09,032 INFO L226 Difference]: Without dead ends: 4975 [2022-01-10 02:36:09,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-01-10 02:36:09,038 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 674 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:09,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 1246 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:36:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4975 states. [2022-01-10 02:36:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4975 to 4659. [2022-01-10 02:36:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3805 states have (on average 1.3742444152431013) internal successors, (5229), 3871 states have internal predecessors, (5229), 484 states have call successors, (484), 303 states have call predecessors, (484), 368 states have return successors, (700), 494 states have call predecessors, (700), 482 states have call successors, (700) [2022-01-10 02:36:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 6413 transitions. [2022-01-10 02:36:09,240 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 6413 transitions. Word has length 91 [2022-01-10 02:36:09,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:09,240 INFO L470 AbstractCegarLoop]: Abstraction has 4659 states and 6413 transitions. [2022-01-10 02:36:09,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 02:36:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 6413 transitions. [2022-01-10 02:36:09,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:36:09,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:09,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:09,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:36:09,243 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:09,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:09,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1748137589, now seen corresponding path program 1 times [2022-01-10 02:36:09,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:09,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280685879] [2022-01-10 02:36:09,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:09,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:09,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:09,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:09,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:09,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-10 02:36:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:36:09,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:09,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280685879] [2022-01-10 02:36:09,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280685879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:09,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:09,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:36:09,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817286956] [2022-01-10 02:36:09,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:09,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:36:09,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:09,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:36:09,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:09,307 INFO L87 Difference]: Start difference. First operand 4659 states and 6413 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 02:36:09,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:09,782 INFO L93 Difference]: Finished difference Result 8318 states and 11195 transitions. [2022-01-10 02:36:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:36:09,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-01-10 02:36:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:09,808 INFO L225 Difference]: With dead ends: 8318 [2022-01-10 02:36:09,808 INFO L226 Difference]: Without dead ends: 6598 [2022-01-10 02:36:09,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:36:09,815 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 742 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:09,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 849 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:36:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6598 states. [2022-01-10 02:36:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6598 to 6378. [2022-01-10 02:36:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 5143 states have (on average 1.3400738868364768) internal successors, (6892), 5245 states have internal predecessors, (6892), 677 states have call successors, (677), 437 states have call predecessors, (677), 556 states have return successors, (1040), 707 states have call predecessors, (1040), 675 states have call successors, (1040) [2022-01-10 02:36:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 8609 transitions. [2022-01-10 02:36:10,162 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 8609 transitions. Word has length 91 [2022-01-10 02:36:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:10,163 INFO L470 AbstractCegarLoop]: Abstraction has 6378 states and 8609 transitions. [2022-01-10 02:36:10,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 02:36:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 8609 transitions. [2022-01-10 02:36:10,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:36:10,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:10,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:10,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:36:10,167 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:10,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:10,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1488991629, now seen corresponding path program 1 times [2022-01-10 02:36:10,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:10,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893656820] [2022-01-10 02:36:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:10,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-10 02:36:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 02:36:10,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:10,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893656820] [2022-01-10 02:36:10,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893656820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:10,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:10,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:36:10,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282339230] [2022-01-10 02:36:10,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:10,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:36:10,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:36:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:36:10,217 INFO L87 Difference]: Start difference. First operand 6378 states and 8609 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:36:10,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:10,624 INFO L93 Difference]: Finished difference Result 8216 states and 10912 transitions. [2022-01-10 02:36:10,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:36:10,624 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-01-10 02:36:10,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:10,635 INFO L225 Difference]: With dead ends: 8216 [2022-01-10 02:36:10,635 INFO L226 Difference]: Without dead ends: 4777 [2022-01-10 02:36:10,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:10,642 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 491 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:10,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 694 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:36:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2022-01-10 02:36:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4659. [2022-01-10 02:36:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3805 states have (on average 1.3629434954007884) internal successors, (5186), 3871 states have internal predecessors, (5186), 484 states have call successors, (484), 303 states have call predecessors, (484), 368 states have return successors, (700), 494 states have call predecessors, (700), 482 states have call successors, (700) [2022-01-10 02:36:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 6370 transitions. [2022-01-10 02:36:10,821 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 6370 transitions. Word has length 91 [2022-01-10 02:36:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:10,821 INFO L470 AbstractCegarLoop]: Abstraction has 4659 states and 6370 transitions. [2022-01-10 02:36:10,821 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:36:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 6370 transitions. [2022-01-10 02:36:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 02:36:10,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:10,824 INFO L514 BasicCegarLoop]: trace histogram [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 02:36:10,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:36:10,825 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1449992458, now seen corresponding path program 1 times [2022-01-10 02:36:10,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:10,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3773966] [2022-01-10 02:36:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:10,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 02:36:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:36:10,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:10,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3773966] [2022-01-10 02:36:10,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3773966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:10,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:10,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:36:10,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755997044] [2022-01-10 02:36:10,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:10,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:36:10,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:10,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:36:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:36:10,906 INFO L87 Difference]: Start difference. First operand 4659 states and 6370 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 02:36:11,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:11,920 INFO L93 Difference]: Finished difference Result 7485 states and 9972 transitions. [2022-01-10 02:36:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-10 02:36:11,921 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 92 [2022-01-10 02:36:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:11,934 INFO L225 Difference]: With dead ends: 7485 [2022-01-10 02:36:11,934 INFO L226 Difference]: Without dead ends: 5458 [2022-01-10 02:36:11,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-01-10 02:36:11,939 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 1758 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:11,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1791 Valid, 1131 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:36:11,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2022-01-10 02:36:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 5281. [2022-01-10 02:36:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 4271 states have (on average 1.338562397564973) internal successors, (5717), 4345 states have internal predecessors, (5717), 562 states have call successors, (562), 351 states have call predecessors, (562), 446 states have return successors, (833), 594 states have call predecessors, (833), 560 states have call successors, (833) [2022-01-10 02:36:12,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 7112 transitions. [2022-01-10 02:36:12,161 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 7112 transitions. Word has length 92 [2022-01-10 02:36:12,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:12,162 INFO L470 AbstractCegarLoop]: Abstraction has 5281 states and 7112 transitions. [2022-01-10 02:36:12,162 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 02:36:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 7112 transitions. [2022-01-10 02:36:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 02:36:12,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:12,166 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:12,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:36:12,166 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:12,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:12,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1292747492, now seen corresponding path program 1 times [2022-01-10 02:36:12,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:12,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094783980] [2022-01-10 02:36:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:12,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 02:36:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:36:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 02:36:12,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:12,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094783980] [2022-01-10 02:36:12,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094783980] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:12,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730705935] [2022-01-10 02:36:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:12,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:12,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:12,235 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 02:36:12,236 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 02:36:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:12,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:36:12,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 02:36:12,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:12,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730705935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:12,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:12,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:36:12,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579166652] [2022-01-10 02:36:12,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:12,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:12,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:12,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:12,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:12,530 INFO L87 Difference]: Start difference. First operand 5281 states and 7112 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:12,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:12,826 INFO L93 Difference]: Finished difference Result 10972 states and 15368 transitions. [2022-01-10 02:36:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:12,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-01-10 02:36:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:12,841 INFO L225 Difference]: With dead ends: 10972 [2022-01-10 02:36:12,841 INFO L226 Difference]: Without dead ends: 5811 [2022-01-10 02:36:12,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:12,853 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 153 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:12,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 805 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:12,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2022-01-10 02:36:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5811. [2022-01-10 02:36:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 4718 states have (on average 1.3452734209410768) internal successors, (6347), 4796 states have internal predecessors, (6347), 611 states have call successors, (611), 381 states have call predecessors, (611), 480 states have return successors, (911), 643 states have call predecessors, (911), 609 states have call successors, (911) [2022-01-10 02:36:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 7869 transitions. [2022-01-10 02:36:13,081 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 7869 transitions. Word has length 110 [2022-01-10 02:36:13,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:13,082 INFO L470 AbstractCegarLoop]: Abstraction has 5811 states and 7869 transitions. [2022-01-10 02:36:13,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:13,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 7869 transitions. [2022-01-10 02:36:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 02:36:13,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:13,089 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:13,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 02:36:13,303 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,SelfDestructingSolverStorable16 [2022-01-10 02:36:13,303 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:13,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:13,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2129974432, now seen corresponding path program 1 times [2022-01-10 02:36:13,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:13,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797457349] [2022-01-10 02:36:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:13,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 02:36:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-10 02:36:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-10 02:36:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-01-10 02:36:13,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:13,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797457349] [2022-01-10 02:36:13,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797457349] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:13,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111477864] [2022-01-10 02:36:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:13,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:13,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:13,422 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 02:36:13,424 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 02:36:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:13,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:36:13,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 02:36:13,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:13,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111477864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:13,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:13,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-01-10 02:36:13,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774840537] [2022-01-10 02:36:13,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:13,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:13,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:13,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:13,699 INFO L87 Difference]: Start difference. First operand 5811 states and 7869 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 02:36:13,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:13,982 INFO L93 Difference]: Finished difference Result 12513 states and 17650 transitions. [2022-01-10 02:36:13,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:13,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-01-10 02:36:13,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:14,006 INFO L225 Difference]: With dead ends: 12513 [2022-01-10 02:36:14,007 INFO L226 Difference]: Without dead ends: 9067 [2022-01-10 02:36:14,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:14,021 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 240 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:14,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 494 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9067 states. [2022-01-10 02:36:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9067 to 8999. [2022-01-10 02:36:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8999 states, 7396 states have (on average 1.3716873985938345) internal successors, (10145), 7517 states have internal predecessors, (10145), 903 states have call successors, (903), 571 states have call predecessors, (903), 698 states have return successors, (1355), 920 states have call predecessors, (1355), 901 states have call successors, (1355) [2022-01-10 02:36:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8999 states to 8999 states and 12403 transitions. [2022-01-10 02:36:14,409 INFO L78 Accepts]: Start accepts. Automaton has 8999 states and 12403 transitions. Word has length 142 [2022-01-10 02:36:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:14,410 INFO L470 AbstractCegarLoop]: Abstraction has 8999 states and 12403 transitions. [2022-01-10 02:36:14,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 02:36:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 8999 states and 12403 transitions. [2022-01-10 02:36:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 02:36:14,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:14,422 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:14,450 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 02:36:14,638 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,SelfDestructingSolverStorable17 [2022-01-10 02:36:14,639 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:14,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:14,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1310340904, now seen corresponding path program 1 times [2022-01-10 02:36:14,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:14,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356921908] [2022-01-10 02:36:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:14,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 02:36:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:36:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-10 02:36:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-01-10 02:36:14,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:14,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356921908] [2022-01-10 02:36:14,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356921908] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:14,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023915856] [2022-01-10 02:36:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:14,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:14,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:14,720 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 02:36:14,721 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 02:36:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:14,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:36:14,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 02:36:15,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:15,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023915856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:15,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:15,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-01-10 02:36:15,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985346820] [2022-01-10 02:36:15,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:15,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:15,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:15,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:15,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:15,018 INFO L87 Difference]: Start difference. First operand 8999 states and 12403 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 02:36:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:15,449 INFO L93 Difference]: Finished difference Result 16231 states and 22959 transitions. [2022-01-10 02:36:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:15,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-01-10 02:36:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:15,477 INFO L225 Difference]: With dead ends: 16231 [2022-01-10 02:36:15,477 INFO L226 Difference]: Without dead ends: 12073 [2022-01-10 02:36:15,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:15,490 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 241 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:15,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 502 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12073 states. [2022-01-10 02:36:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12073 to 11975. [2022-01-10 02:36:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11975 states, 9897 states have (on average 1.3837526523188846) internal successors, (13695), 10052 states have internal predecessors, (13695), 1179 states have call successors, (1179), 746 states have call predecessors, (1179), 897 states have return successors, (1750), 1186 states have call predecessors, (1750), 1177 states have call successors, (1750) [2022-01-10 02:36:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11975 states to 11975 states and 16624 transitions. [2022-01-10 02:36:16,080 INFO L78 Accepts]: Start accepts. Automaton has 11975 states and 16624 transitions. Word has length 142 [2022-01-10 02:36:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:16,080 INFO L470 AbstractCegarLoop]: Abstraction has 11975 states and 16624 transitions. [2022-01-10 02:36:16,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 02:36:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 11975 states and 16624 transitions. [2022-01-10 02:36:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 02:36:16,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:16,094 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:36:16,112 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 02:36:16,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:16,312 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1742334647, now seen corresponding path program 1 times [2022-01-10 02:36:16,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:16,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342873101] [2022-01-10 02:36:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:16,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 02:36:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:36:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-10 02:36:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:36:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:36:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 02:36:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:36:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:36:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-10 02:36:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-01-10 02:36:16,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:16,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342873101] [2022-01-10 02:36:16,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342873101] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:16,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924936338] [2022-01-10 02:36:16,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:16,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:16,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:16,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:16,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 02:36:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:16,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:36:16,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 02:36:16,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:16,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924936338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:16,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:16,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-01-10 02:36:16,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97804970] [2022-01-10 02:36:16,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:16,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:16,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:16,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:16,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:16,714 INFO L87 Difference]: Start difference. First operand 11975 states and 16624 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 02:36:17,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:17,195 INFO L93 Difference]: Finished difference Result 16300 states and 21939 transitions. [2022-01-10 02:36:17,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:17,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-01-10 02:36:17,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:17,226 INFO L225 Difference]: With dead ends: 16300 [2022-01-10 02:36:17,226 INFO L226 Difference]: Without dead ends: 14112 [2022-01-10 02:36:17,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:17,233 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 61 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:17,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 647 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14112 states. [2022-01-10 02:36:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14112 to 14067. [2022-01-10 02:36:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14067 states, 11522 states have (on average 1.3576636000694324) internal successors, (15643), 11706 states have internal predecessors, (15643), 1413 states have call successors, (1413), 928 states have call predecessors, (1413), 1130 states have return successors, (2057), 1442 states have call predecessors, (2057), 1411 states have call successors, (2057) [2022-01-10 02:36:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14067 states to 14067 states and 19113 transitions. [2022-01-10 02:36:17,816 INFO L78 Accepts]: Start accepts. Automaton has 14067 states and 19113 transitions. Word has length 163 [2022-01-10 02:36:17,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:17,817 INFO L470 AbstractCegarLoop]: Abstraction has 14067 states and 19113 transitions. [2022-01-10 02:36:17,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 02:36:17,817 INFO L276 IsEmpty]: Start isEmpty. Operand 14067 states and 19113 transitions. [2022-01-10 02:36:17,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 02:36:17,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:17,830 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:17,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 02:36:18,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:18,047 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:18,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash -268333173, now seen corresponding path program 1 times [2022-01-10 02:36:18,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:18,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619290497] [2022-01-10 02:36:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:18,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-10 02:36:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 02:36:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-10 02:36:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-10 02:36:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-10 02:36:18,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:18,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619290497] [2022-01-10 02:36:18,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619290497] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:18,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812928526] [2022-01-10 02:36:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:18,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:18,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:18,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:18,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 02:36:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:18,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:36:18,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 02:36:18,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:18,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812928526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:18,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:18,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:36:18,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577975290] [2022-01-10 02:36:18,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:18,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:18,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:18,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:18,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:18,433 INFO L87 Difference]: Start difference. First operand 14067 states and 19113 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 02:36:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:18,996 INFO L93 Difference]: Finished difference Result 22835 states and 31619 transitions. [2022-01-10 02:36:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:18,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-01-10 02:36:18,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:19,029 INFO L225 Difference]: With dead ends: 22835 [2022-01-10 02:36:19,030 INFO L226 Difference]: Without dead ends: 13226 [2022-01-10 02:36:19,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:19,048 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 260 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:19,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 357 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13226 states. [2022-01-10 02:36:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13226 to 13226. [2022-01-10 02:36:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13226 states, 10886 states have (on average 1.3172882601506521) internal successors, (14340), 11034 states have internal predecessors, (14340), 1261 states have call successors, (1261), 891 states have call predecessors, (1261), 1077 states have return successors, (1782), 1310 states have call predecessors, (1782), 1259 states have call successors, (1782) [2022-01-10 02:36:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13226 states to 13226 states and 17383 transitions. [2022-01-10 02:36:19,748 INFO L78 Accepts]: Start accepts. Automaton has 13226 states and 17383 transitions. Word has length 159 [2022-01-10 02:36:19,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:19,748 INFO L470 AbstractCegarLoop]: Abstraction has 13226 states and 17383 transitions. [2022-01-10 02:36:19,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 02:36:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 13226 states and 17383 transitions. [2022-01-10 02:36:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 02:36:19,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:19,760 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:19,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 02:36:19,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:19,976 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1542492939, now seen corresponding path program 1 times [2022-01-10 02:36:19,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:19,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426779085] [2022-01-10 02:36:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:19,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-10 02:36:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 02:36:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-10 02:36:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-10 02:36:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-01-10 02:36:20,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:20,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426779085] [2022-01-10 02:36:20,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426779085] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:20,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352147282] [2022-01-10 02:36:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:20,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:20,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:20,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:20,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 02:36:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:20,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:36:20,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 02:36:20,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:20,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352147282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:20,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:20,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:36:20,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861560825] [2022-01-10 02:36:20,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:20,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:20,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:20,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:20,382 INFO L87 Difference]: Start difference. First operand 13226 states and 17383 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 02:36:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:20,948 INFO L93 Difference]: Finished difference Result 22770 states and 30332 transitions. [2022-01-10 02:36:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:20,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 159 [2022-01-10 02:36:20,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:20,985 INFO L225 Difference]: With dead ends: 22770 [2022-01-10 02:36:20,985 INFO L226 Difference]: Without dead ends: 14002 [2022-01-10 02:36:21,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:21,002 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 299 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:21,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 503 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14002 states. [2022-01-10 02:36:21,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14002 to 13857. [2022-01-10 02:36:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13857 states, 11476 states have (on average 1.294963401882189) internal successors, (14861), 11619 states have internal predecessors, (14861), 1260 states have call successors, (1260), 930 states have call predecessors, (1260), 1119 states have return successors, (1767), 1317 states have call predecessors, (1767), 1258 states have call successors, (1767) [2022-01-10 02:36:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13857 states to 13857 states and 17888 transitions. [2022-01-10 02:36:21,726 INFO L78 Accepts]: Start accepts. Automaton has 13857 states and 17888 transitions. Word has length 159 [2022-01-10 02:36:21,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:21,727 INFO L470 AbstractCegarLoop]: Abstraction has 13857 states and 17888 transitions. [2022-01-10 02:36:21,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-01-10 02:36:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 13857 states and 17888 transitions. [2022-01-10 02:36:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 02:36:21,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:21,739 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:21,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 02:36:21,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:21,951 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1281698088, now seen corresponding path program 1 times [2022-01-10 02:36:21,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:21,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969939357] [2022-01-10 02:36:21,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:21,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:21,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:21,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:22,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:22,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-10 02:36:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:22,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-10 02:36:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:22,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-10 02:36:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:22,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:22,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-10 02:36:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 02:36:22,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:22,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969939357] [2022-01-10 02:36:22,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969939357] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:22,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140217187] [2022-01-10 02:36:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:22,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:22,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:22,024 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:22,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 02:36:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:22,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:36:22,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 02:36:22,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:22,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140217187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:22,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:22,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:36:22,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965618549] [2022-01-10 02:36:22,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:22,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:22,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:22,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:22,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:22,273 INFO L87 Difference]: Start difference. First operand 13857 states and 17888 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 02:36:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:23,232 INFO L93 Difference]: Finished difference Result 32314 states and 42790 transitions. [2022-01-10 02:36:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:23,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-01-10 02:36:23,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:23,284 INFO L225 Difference]: With dead ends: 32314 [2022-01-10 02:36:23,284 INFO L226 Difference]: Without dead ends: 22915 [2022-01-10 02:36:23,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:23,304 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 286 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:23,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 530 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22915 states. [2022-01-10 02:36:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22915 to 22812. [2022-01-10 02:36:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22812 states, 19108 states have (on average 1.3007640778731422) internal successors, (24855), 19331 states have internal predecessors, (24855), 1973 states have call successors, (1973), 1476 states have call predecessors, (1973), 1729 states have return successors, (3227), 2022 states have call predecessors, (3227), 1971 states have call successors, (3227) [2022-01-10 02:36:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22812 states to 22812 states and 30055 transitions. [2022-01-10 02:36:24,667 INFO L78 Accepts]: Start accepts. Automaton has 22812 states and 30055 transitions. Word has length 160 [2022-01-10 02:36:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:24,667 INFO L470 AbstractCegarLoop]: Abstraction has 22812 states and 30055 transitions. [2022-01-10 02:36:24,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 02:36:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 22812 states and 30055 transitions. [2022-01-10 02:36:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 02:36:24,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:24,687 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:24,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-10 02:36:24,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:24,887 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:24,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1321921686, now seen corresponding path program 1 times [2022-01-10 02:36:24,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:24,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123750930] [2022-01-10 02:36:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:24,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-10 02:36:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-10 02:36:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-10 02:36:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-10 02:36:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-10 02:36:24,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:24,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123750930] [2022-01-10 02:36:24,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123750930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:24,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:36:24,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:36:24,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648364518] [2022-01-10 02:36:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:24,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:36:24,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:36:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:36:24,941 INFO L87 Difference]: Start difference. First operand 22812 states and 30055 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:36:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:26,199 INFO L93 Difference]: Finished difference Result 39262 states and 52135 transitions. [2022-01-10 02:36:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:36:26,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-01-10 02:36:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:26,249 INFO L225 Difference]: With dead ends: 39262 [2022-01-10 02:36:26,249 INFO L226 Difference]: Without dead ends: 20907 [2022-01-10 02:36:26,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:36:26,277 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 417 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:26,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 636 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:36:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20907 states. [2022-01-10 02:36:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20907 to 19245. [2022-01-10 02:36:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19245 states, 16078 states have (on average 1.3000373180743874) internal successors, (20902), 16345 states have internal predecessors, (20902), 1610 states have call successors, (1610), 1198 states have call predecessors, (1610), 1555 states have return successors, (2726), 1711 states have call predecessors, (2726), 1608 states have call successors, (2726) [2022-01-10 02:36:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19245 states to 19245 states and 25238 transitions. [2022-01-10 02:36:27,313 INFO L78 Accepts]: Start accepts. Automaton has 19245 states and 25238 transitions. Word has length 160 [2022-01-10 02:36:27,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:27,313 INFO L470 AbstractCegarLoop]: Abstraction has 19245 states and 25238 transitions. [2022-01-10 02:36:27,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:36:27,313 INFO L276 IsEmpty]: Start isEmpty. Operand 19245 states and 25238 transitions. [2022-01-10 02:36:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 02:36:27,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:27,328 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:27,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 02:36:27,328 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:27,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1755889720, now seen corresponding path program 1 times [2022-01-10 02:36:27,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:27,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214303381] [2022-01-10 02:36:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:27,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:36:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:36:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-10 02:36:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-10 02:36:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-01-10 02:36:27,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214303381] [2022-01-10 02:36:27,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214303381] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48308639] [2022-01-10 02:36:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:27,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:27,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:27,395 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:27,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-10 02:36:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:27,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:36:27,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 02:36:27,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:27,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48308639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:27,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:27,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:36:27,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883731804] [2022-01-10 02:36:27,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:27,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:27,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:27,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:27,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:27,652 INFO L87 Difference]: Start difference. First operand 19245 states and 25238 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 02:36:28,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:28,478 INFO L93 Difference]: Finished difference Result 29840 states and 40378 transitions. [2022-01-10 02:36:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:28,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2022-01-10 02:36:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:28,530 INFO L225 Difference]: With dead ends: 29840 [2022-01-10 02:36:28,530 INFO L226 Difference]: Without dead ends: 19329 [2022-01-10 02:36:28,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:28,557 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 129 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:28,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 771 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:28,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19329 states. [2022-01-10 02:36:29,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19329 to 19245. [2022-01-10 02:36:29,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19245 states, 16078 states have (on average 1.2757183729319568) internal successors, (20511), 16345 states have internal predecessors, (20511), 1610 states have call successors, (1610), 1198 states have call predecessors, (1610), 1555 states have return successors, (2726), 1711 states have call predecessors, (2726), 1608 states have call successors, (2726) [2022-01-10 02:36:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19245 states to 19245 states and 24847 transitions. [2022-01-10 02:36:29,541 INFO L78 Accepts]: Start accepts. Automaton has 19245 states and 24847 transitions. Word has length 162 [2022-01-10 02:36:29,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:29,542 INFO L470 AbstractCegarLoop]: Abstraction has 19245 states and 24847 transitions. [2022-01-10 02:36:29,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 02:36:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 19245 states and 24847 transitions. [2022-01-10 02:36:29,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 02:36:29,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:29,559 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:29,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-10 02:36:29,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-10 02:36:29,775 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:29,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1035796568, now seen corresponding path program 1 times [2022-01-10 02:36:29,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:29,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753018710] [2022-01-10 02:36:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:29,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:36:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:36:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-10 02:36:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-10 02:36:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-01-10 02:36:29,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:29,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753018710] [2022-01-10 02:36:29,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753018710] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:29,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150385926] [2022-01-10 02:36:29,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:29,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:29,858 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:29,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-10 02:36:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:29,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:36:29,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 02:36:30,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:30,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150385926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:30,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:30,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:36:30,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730575125] [2022-01-10 02:36:30,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:30,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:30,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:30,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:30,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:30,154 INFO L87 Difference]: Start difference. First operand 19245 states and 24847 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 02:36:31,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:31,210 INFO L93 Difference]: Finished difference Result 31799 states and 42237 transitions. [2022-01-10 02:36:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:31,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2022-01-10 02:36:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:31,263 INFO L225 Difference]: With dead ends: 31799 [2022-01-10 02:36:31,263 INFO L226 Difference]: Without dead ends: 18766 [2022-01-10 02:36:31,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:31,294 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 273 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:31,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 353 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18766 states. [2022-01-10 02:36:32,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18766 to 14280. [2022-01-10 02:36:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14280 states, 11865 states have (on average 1.2332069110830173) internal successors, (14632), 12046 states have internal predecessors, (14632), 1232 states have call successors, (1232), 923 states have call predecessors, (1232), 1181 states have return successors, (1900), 1316 states have call predecessors, (1900), 1230 states have call successors, (1900) [2022-01-10 02:36:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14280 states to 14280 states and 17764 transitions. [2022-01-10 02:36:32,220 INFO L78 Accepts]: Start accepts. Automaton has 14280 states and 17764 transitions. Word has length 162 [2022-01-10 02:36:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:32,220 INFO L470 AbstractCegarLoop]: Abstraction has 14280 states and 17764 transitions. [2022-01-10 02:36:32,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 02:36:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 14280 states and 17764 transitions. [2022-01-10 02:36:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 02:36:32,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:32,228 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:32,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-10 02:36:32,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-10 02:36:32,435 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1007655319, now seen corresponding path program 1 times [2022-01-10 02:36:32,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:32,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040800829] [2022-01-10 02:36:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:32,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 02:36:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-10 02:36:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-10 02:36:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-10 02:36:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-01-10 02:36:32,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:32,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040800829] [2022-01-10 02:36:32,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040800829] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:32,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131128831] [2022-01-10 02:36:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:32,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:32,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:32,519 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:32,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-10 02:36:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:32,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:36:32,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 02:36:32,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:32,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131128831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:32,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:32,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:36:32,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705234864] [2022-01-10 02:36:32,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:32,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:32,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:32,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:32,810 INFO L87 Difference]: Start difference. First operand 14280 states and 17764 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 02:36:33,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:33,907 INFO L93 Difference]: Finished difference Result 31933 states and 40362 transitions. [2022-01-10 02:36:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:33,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 163 [2022-01-10 02:36:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:33,963 INFO L225 Difference]: With dead ends: 31933 [2022-01-10 02:36:33,964 INFO L226 Difference]: Without dead ends: 22111 [2022-01-10 02:36:33,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:36:33,987 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 136 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:33,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 786 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22111 states. [2022-01-10 02:36:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22111 to 22109. [2022-01-10 02:36:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22109 states, 18503 states have (on average 1.2373128681835377) internal successors, (22894), 18781 states have internal predecessors, (22894), 1863 states have call successors, (1863), 1389 states have call predecessors, (1863), 1741 states have return successors, (3153), 1948 states have call predecessors, (3153), 1861 states have call successors, (3153) [2022-01-10 02:36:35,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22109 states to 22109 states and 27910 transitions. [2022-01-10 02:36:35,309 INFO L78 Accepts]: Start accepts. Automaton has 22109 states and 27910 transitions. Word has length 163 [2022-01-10 02:36:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:35,309 INFO L470 AbstractCegarLoop]: Abstraction has 22109 states and 27910 transitions. [2022-01-10 02:36:35,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 02:36:35,309 INFO L276 IsEmpty]: Start isEmpty. Operand 22109 states and 27910 transitions. [2022-01-10 02:36:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 02:36:35,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:35,323 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:35,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-10 02:36:35,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-10 02:36:35,531 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:35,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1197312820, now seen corresponding path program 1 times [2022-01-10 02:36:35,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:35,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947646392] [2022-01-10 02:36:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:35,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:36:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:36:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:36:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-10 02:36:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 02:36:35,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:35,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947646392] [2022-01-10 02:36:35,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947646392] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:35,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691958145] [2022-01-10 02:36:35,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:35,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:35,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:35,600 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:35,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-10 02:36:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:35,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:36:35,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-01-10 02:36:35,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:35,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691958145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:35,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:35,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-01-10 02:36:35,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075468757] [2022-01-10 02:36:35,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:35,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:36:35,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:35,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:36:35,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:36:35,961 INFO L87 Difference]: Start difference. First operand 22109 states and 27910 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:37,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:37,455 INFO L93 Difference]: Finished difference Result 39712 states and 50761 transitions. [2022-01-10 02:36:37,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:36:37,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-01-10 02:36:37,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:37,510 INFO L225 Difference]: With dead ends: 39712 [2022-01-10 02:36:37,510 INFO L226 Difference]: Without dead ends: 22061 [2022-01-10 02:36:37,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:37,543 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 363 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:37,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 581 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:36:37,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22061 states. [2022-01-10 02:36:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22061 to 22061. [2022-01-10 02:36:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22061 states, 18455 states have (on average 1.2119208886480628) internal successors, (22366), 18733 states have internal predecessors, (22366), 1863 states have call successors, (1863), 1389 states have call predecessors, (1863), 1741 states have return successors, (3153), 1948 states have call predecessors, (3153), 1861 states have call successors, (3153) [2022-01-10 02:36:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22061 states to 22061 states and 27382 transitions. [2022-01-10 02:36:38,964 INFO L78 Accepts]: Start accepts. Automaton has 22061 states and 27382 transitions. Word has length 164 [2022-01-10 02:36:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:38,964 INFO L470 AbstractCegarLoop]: Abstraction has 22061 states and 27382 transitions. [2022-01-10 02:36:38,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 22061 states and 27382 transitions. [2022-01-10 02:36:38,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 02:36:38,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:38,977 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:39,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-10 02:36:39,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-10 02:36:39,179 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:39,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1815482190, now seen corresponding path program 1 times [2022-01-10 02:36:39,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:39,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502463374] [2022-01-10 02:36:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:39,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:36:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:36:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:36:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-10 02:36:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 02:36:39,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:39,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502463374] [2022-01-10 02:36:39,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502463374] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:39,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504410977] [2022-01-10 02:36:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:39,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:39,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:39,253 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:39,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-10 02:36:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:39,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:36:39,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-01-10 02:36:39,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:39,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504410977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:39,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:39,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-01-10 02:36:39,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050688955] [2022-01-10 02:36:39,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:39,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:36:39,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:39,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:36:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:36:39,546 INFO L87 Difference]: Start difference. First operand 22061 states and 27382 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:41,185 INFO L93 Difference]: Finished difference Result 38588 states and 49068 transitions. [2022-01-10 02:36:41,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:36:41,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-01-10 02:36:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:41,242 INFO L225 Difference]: With dead ends: 38588 [2022-01-10 02:36:41,243 INFO L226 Difference]: Without dead ends: 21677 [2022-01-10 02:36:41,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:36:41,278 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 390 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:41,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 593 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:36:41,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21677 states. [2022-01-10 02:36:42,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21677 to 19686. [2022-01-10 02:36:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19686 states, 16454 states have (on average 1.1835419958672664) internal successors, (19474), 16693 states have internal predecessors, (19474), 1671 states have call successors, (1671), 1249 states have call predecessors, (1671), 1559 states have return successors, (2692), 1749 states have call predecessors, (2692), 1669 states have call successors, (2692) [2022-01-10 02:36:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19686 states to 19686 states and 23837 transitions. [2022-01-10 02:36:42,702 INFO L78 Accepts]: Start accepts. Automaton has 19686 states and 23837 transitions. Word has length 164 [2022-01-10 02:36:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:42,703 INFO L470 AbstractCegarLoop]: Abstraction has 19686 states and 23837 transitions. [2022-01-10 02:36:42,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:42,703 INFO L276 IsEmpty]: Start isEmpty. Operand 19686 states and 23837 transitions. [2022-01-10 02:36:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 02:36:42,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:42,713 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:42,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-10 02:36:42,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-10 02:36:42,924 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash 93479504, now seen corresponding path program 1 times [2022-01-10 02:36:42,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:42,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435984112] [2022-01-10 02:36:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:42,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:36:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:36:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:36:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:43,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-10 02:36:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 02:36:43,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:43,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435984112] [2022-01-10 02:36:43,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435984112] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:43,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451597117] [2022-01-10 02:36:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:43,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:43,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:43,004 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:43,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-10 02:36:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:43,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:36:43,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-01-10 02:36:43,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:43,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451597117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:43,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:43,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-01-10 02:36:43,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460896648] [2022-01-10 02:36:43,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:43,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:36:43,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:36:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:36:43,270 INFO L87 Difference]: Start difference. First operand 19686 states and 23837 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:44,578 INFO L93 Difference]: Finished difference Result 28246 states and 34475 transitions. [2022-01-10 02:36:44,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:36:44,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-01-10 02:36:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:44,626 INFO L225 Difference]: With dead ends: 28246 [2022-01-10 02:36:44,626 INFO L226 Difference]: Without dead ends: 17386 [2022-01-10 02:36:44,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:44,651 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 354 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:44,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 567 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:36:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17386 states. [2022-01-10 02:36:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17386 to 14165. [2022-01-10 02:36:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14165 states, 11759 states have (on average 1.1724636448677608) internal successors, (13787), 11923 states have internal predecessors, (13787), 1253 states have call successors, (1253), 919 states have call predecessors, (1253), 1151 states have return successors, (1959), 1326 states have call predecessors, (1959), 1251 states have call successors, (1959) [2022-01-10 02:36:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14165 states to 14165 states and 16999 transitions. [2022-01-10 02:36:45,757 INFO L78 Accepts]: Start accepts. Automaton has 14165 states and 16999 transitions. Word has length 164 [2022-01-10 02:36:45,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:45,758 INFO L470 AbstractCegarLoop]: Abstraction has 14165 states and 16999 transitions. [2022-01-10 02:36:45,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:45,758 INFO L276 IsEmpty]: Start isEmpty. Operand 14165 states and 16999 transitions. [2022-01-10 02:36:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 02:36:45,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:45,764 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:45,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-10 02:36:45,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:45,964 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:45,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:45,965 INFO L85 PathProgramCache]: Analyzing trace with hash -999155698, now seen corresponding path program 1 times [2022-01-10 02:36:45,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:45,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346560262] [2022-01-10 02:36:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:45,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:45,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:45,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:45,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:36:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:36:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:36:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-10 02:36:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 02:36:46,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:46,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346560262] [2022-01-10 02:36:46,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346560262] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:46,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074215851] [2022-01-10 02:36:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:46,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:46,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:46,042 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:46,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-10 02:36:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:46,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 02:36:46,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-01-10 02:36:46,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:46,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074215851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:46,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:46,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-01-10 02:36:46,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077243180] [2022-01-10 02:36:46,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:46,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:36:46,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:46,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:36:46,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:46,324 INFO L87 Difference]: Start difference. First operand 14165 states and 16999 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:47,444 INFO L93 Difference]: Finished difference Result 23957 states and 29154 transitions. [2022-01-10 02:36:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:36:47,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-01-10 02:36:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:47,471 INFO L225 Difference]: With dead ends: 23957 [2022-01-10 02:36:47,471 INFO L226 Difference]: Without dead ends: 14252 [2022-01-10 02:36:47,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:36:47,485 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 49 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:47,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1254 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:47,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14252 states. [2022-01-10 02:36:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14252 to 14012. [2022-01-10 02:36:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14012 states, 11622 states have (on average 1.1591808638788506) internal successors, (13472), 11775 states have internal predecessors, (13472), 1253 states have call successors, (1253), 919 states have call predecessors, (1253), 1135 states have return successors, (1859), 1321 states have call predecessors, (1859), 1251 states have call successors, (1859) [2022-01-10 02:36:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14012 states to 14012 states and 16584 transitions. [2022-01-10 02:36:48,531 INFO L78 Accepts]: Start accepts. Automaton has 14012 states and 16584 transitions. Word has length 164 [2022-01-10 02:36:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:48,531 INFO L470 AbstractCegarLoop]: Abstraction has 14012 states and 16584 transitions. [2022-01-10 02:36:48,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 14012 states and 16584 transitions. [2022-01-10 02:36:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 02:36:48,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:48,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:36:48,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-10 02:36:48,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:48,755 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:48,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1766359060, now seen corresponding path program 1 times [2022-01-10 02:36:48,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:48,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294155088] [2022-01-10 02:36:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:48,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:36:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:36:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-10 02:36:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:36:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:36:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:36:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:36:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-10 02:36:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-01-10 02:36:48,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:48,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294155088] [2022-01-10 02:36:48,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294155088] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:48,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709856889] [2022-01-10 02:36:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:48,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:48,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:48,825 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:48,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-10 02:36:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:48,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 02:36:48,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-01-10 02:36:49,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:49,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709856889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:49,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:49,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-01-10 02:36:49,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698396701] [2022-01-10 02:36:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:49,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:36:49,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:36:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:36:49,108 INFO L87 Difference]: Start difference. First operand 14012 states and 16584 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:50,034 INFO L93 Difference]: Finished difference Result 20327 states and 24227 transitions. [2022-01-10 02:36:50,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:36:50,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-01-10 02:36:50,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:50,058 INFO L225 Difference]: With dead ends: 20327 [2022-01-10 02:36:50,058 INFO L226 Difference]: Without dead ends: 10772 [2022-01-10 02:36:50,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:36:50,072 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 10 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:50,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1239 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:50,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2022-01-10 02:36:50,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 10736. [2022-01-10 02:36:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10736 states, 8846 states have (on average 1.1583766674203029) internal successors, (10247), 8965 states have internal predecessors, (10247), 982 states have call successors, (982), 719 states have call predecessors, (982), 906 states have return successors, (1369), 1054 states have call predecessors, (1369), 980 states have call successors, (1369) [2022-01-10 02:36:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10736 states to 10736 states and 12598 transitions. [2022-01-10 02:36:50,866 INFO L78 Accepts]: Start accepts. Automaton has 10736 states and 12598 transitions. Word has length 164 [2022-01-10 02:36:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:50,866 INFO L470 AbstractCegarLoop]: Abstraction has 10736 states and 12598 transitions. [2022-01-10 02:36:50,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 02:36:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 10736 states and 12598 transitions. [2022-01-10 02:36:50,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-10 02:36:50,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:50,871 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:50,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-10 02:36:51,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:51,072 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:51,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1870747336, now seen corresponding path program 1 times [2022-01-10 02:36:51,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:51,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014592247] [2022-01-10 02:36:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:51,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 02:36:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:36:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-10 02:36:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:36:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 02:36:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-10 02:36:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-10 02:36:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:36:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-10 02:36:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-10 02:36:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-10 02:36:51,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:36:51,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014592247] [2022-01-10 02:36:51,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014592247] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:36:51,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291426296] [2022-01-10 02:36:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:51,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:36:51,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:36:51,164 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:36:51,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-10 02:36:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:51,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:36:51,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:36:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-10 02:36:51,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:36:51,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291426296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:36:51,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:36:51,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-01-10 02:36:51,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552257813] [2022-01-10 02:36:51,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:36:51,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:36:51,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:36:51,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:36:51,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:51,529 INFO L87 Difference]: Start difference. First operand 10736 states and 12598 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 02:36:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:36:52,555 INFO L93 Difference]: Finished difference Result 19604 states and 23336 transitions. [2022-01-10 02:36:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:36:52,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 195 [2022-01-10 02:36:52,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:36:52,593 INFO L225 Difference]: With dead ends: 19604 [2022-01-10 02:36:52,593 INFO L226 Difference]: Without dead ends: 15170 [2022-01-10 02:36:52,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:36:52,605 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 52 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:36:52,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 615 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:36:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15170 states. [2022-01-10 02:36:53,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15170 to 15160. [2022-01-10 02:36:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15160 states, 12283 states have (on average 1.1693397378490598) internal successors, (14363), 12462 states have internal predecessors, (14363), 1482 states have call successors, (1482), 1083 states have call predecessors, (1482), 1393 states have return successors, (2062), 1617 states have call predecessors, (2062), 1480 states have call successors, (2062) [2022-01-10 02:36:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15160 states to 15160 states and 17907 transitions. [2022-01-10 02:36:53,809 INFO L78 Accepts]: Start accepts. Automaton has 15160 states and 17907 transitions. Word has length 195 [2022-01-10 02:36:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:36:53,809 INFO L470 AbstractCegarLoop]: Abstraction has 15160 states and 17907 transitions. [2022-01-10 02:36:53,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 02:36:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 15160 states and 17907 transitions. [2022-01-10 02:36:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-10 02:36:53,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:36:53,817 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:36:53,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-10 02:36:54,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-01-10 02:36:54,017 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:36:54,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:36:54,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1526826682, now seen corresponding path program 1 times [2022-01-10 02:36:54,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:36:54,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310980037] [2022-01-10 02:36:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:36:54,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:36:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:54,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:36:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:54,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:36:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:54,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:36:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:54,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:36:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:54,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:36:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:54,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-10 02:36:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 02:36:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:36:54,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-10 02:36:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat