/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:33:20,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:33:20,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:33:20,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:33:20,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:33:20,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:33:20,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:33:20,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:33:20,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:33:20,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:33:20,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:33:20,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:33:20,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:33:20,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:33:20,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:33:20,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:33:20,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:33:20,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:33:20,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:33:20,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:33:20,161 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 02:33:20,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:33:20,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:33:20,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:33:20,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:33:20,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:33:20,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:33:20,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:33:20,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:33:20,179 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:33:20,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:33:20,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:33:20,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:33:20,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:33:20,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:33:20,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:33:20,180 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:33:20,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:33:20,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:33:20,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:33:20,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:33:20,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:33:20,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:33:20,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:33:20,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:33:20,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:33:20,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:33:20,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:33:20,182 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:33:20,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:33:20,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:33:20,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:33:20,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:33:20,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:33:20,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:33:20,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:33:20,413 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:33:20,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-1.c [2022-01-10 02:33:20,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a464b3f45/d477d2396b4f45328d71ce416fbb1191/FLAG87ca72ba0 [2022-01-10 02:33:20,870 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:33:20,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-1.c [2022-01-10 02:33:20,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a464b3f45/d477d2396b4f45328d71ce416fbb1191/FLAG87ca72ba0 [2022-01-10 02:33:20,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a464b3f45/d477d2396b4f45328d71ce416fbb1191 [2022-01-10 02:33:20,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:33:20,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:33:20,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:33:20,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:33:20,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:33:20,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:33:20" (1/1) ... [2022-01-10 02:33:20,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d55592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:20, skipping insertion in model container [2022-01-10 02:33:20,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:33:20" (1/1) ... [2022-01-10 02:33:20,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:33:20,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:33:21,083 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-1.c[914,927] [2022-01-10 02:33:21,149 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-1.c[7115,7128] [2022-01-10 02:33:21,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:33:21,214 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:33:21,221 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-1.c[914,927] [2022-01-10 02:33:21,244 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-1.c[7115,7128] [2022-01-10 02:33:21,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:33:21,291 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:33:21,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21 WrapperNode [2022-01-10 02:33:21,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:33:21,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:33:21,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:33:21,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:33:21,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (1/1) ... [2022-01-10 02:33:21,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (1/1) ... [2022-01-10 02:33:21,349 INFO L137 Inliner]: procedures = 55, calls = 60, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 402 [2022-01-10 02:33:21,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:33:21,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:33:21,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:33:21,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:33:21,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (1/1) ... [2022-01-10 02:33:21,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (1/1) ... [2022-01-10 02:33:21,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (1/1) ... [2022-01-10 02:33:21,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (1/1) ... [2022-01-10 02:33:21,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (1/1) ... [2022-01-10 02:33:21,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (1/1) ... [2022-01-10 02:33:21,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (1/1) ... [2022-01-10 02:33:21,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:33:21,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:33:21,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:33:21,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:33:21,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (1/1) ... [2022-01-10 02:33:21,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:33:21,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:21,432 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 02:33:21,441 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 02:33:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:33:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:33:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:33:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 02:33:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 02:33:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 02:33:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 02:33:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 02:33:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 02:33:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 02:33:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 02:33:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 02:33:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 02:33:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 02:33:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 02:33:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 02:33:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 02:33:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 02:33:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 02:33:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 02:33:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 02:33:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 02:33:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 02:33:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:33:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 02:33:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 02:33:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 02:33:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 02:33:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:33:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:33:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 02:33:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 02:33:21,548 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:33:21,550 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:33:21,916 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:33:21,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:33:21,922 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 02:33:21,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:33:21 BoogieIcfgContainer [2022-01-10 02:33:21,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:33:21,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:33:21,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:33:21,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:33:21,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:33:20" (1/3) ... [2022-01-10 02:33:21,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5384d882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:33:21, skipping insertion in model container [2022-01-10 02:33:21,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:21" (2/3) ... [2022-01-10 02:33:21,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5384d882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:33:21, skipping insertion in model container [2022-01-10 02:33:21,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:33:21" (3/3) ... [2022-01-10 02:33:21,930 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.01.cil-1.c [2022-01-10 02:33:21,933 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:33:21,933 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:33:21,963 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:33:21,967 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 02:33:21,968 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:33:21,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 208 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 168 states have internal predecessors, (248), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 02:33:21,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 02:33:21,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:21,994 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] [2022-01-10 02:33:21,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:21,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1497674214, now seen corresponding path program 1 times [2022-01-10 02:33:22,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:22,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435144661] [2022-01-10 02:33:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:22,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:22,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:22,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:22,250 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 02:33:22,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:22,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435144661] [2022-01-10 02:33:22,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435144661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:22,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:22,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:33:22,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553507943] [2022-01-10 02:33:22,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:22,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:33:22,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:22,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:33:22,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:33:22,278 INFO L87 Difference]: Start difference. First operand has 208 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 168 states have internal predecessors, (248), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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 02:33:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:22,872 INFO L93 Difference]: Finished difference Result 530 states and 790 transitions. [2022-01-10 02:33:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:33:22,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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 57 [2022-01-10 02:33:22,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:22,882 INFO L225 Difference]: With dead ends: 530 [2022-01-10 02:33:22,882 INFO L226 Difference]: Without dead ends: 329 [2022-01-10 02:33:22,885 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 02:33:22,887 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 516 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:22,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 746 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:33:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-01-10 02:33:22,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 288. [2022-01-10 02:33:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 227 states have (on average 1.4317180616740088) internal successors, (325), 232 states have internal predecessors, (325), 39 states have call successors, (39), 20 states have call predecessors, (39), 20 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-01-10 02:33:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 404 transitions. [2022-01-10 02:33:22,944 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 404 transitions. Word has length 57 [2022-01-10 02:33:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:22,944 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 404 transitions. [2022-01-10 02:33:22,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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 02:33:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 404 transitions. [2022-01-10 02:33:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 02:33:22,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:22,946 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] [2022-01-10 02:33:22,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:33:22,947 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:22,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash -604187876, now seen corresponding path program 1 times [2022-01-10 02:33:22,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:22,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309043574] [2022-01-10 02:33:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:22,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,021 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 02:33:23,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:23,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309043574] [2022-01-10 02:33:23,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309043574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:23,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:23,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:23,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45556746] [2022-01-10 02:33:23,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:23,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:23,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:23,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:23,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:23,023 INFO L87 Difference]: Start difference. First operand 288 states and 404 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 02:33:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:23,595 INFO L93 Difference]: Finished difference Result 620 states and 878 transitions. [2022-01-10 02:33:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:33:23,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 57 [2022-01-10 02:33:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:23,604 INFO L225 Difference]: With dead ends: 620 [2022-01-10 02:33:23,604 INFO L226 Difference]: Without dead ends: 437 [2022-01-10 02:33:23,609 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 02:33:23,610 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 493 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:23,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 1025 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:33:23,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-01-10 02:33:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 373. [2022-01-10 02:33:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 295 states have (on average 1.423728813559322) internal successors, (420), 301 states have internal predecessors, (420), 49 states have call successors, (49), 26 states have call predecessors, (49), 27 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-01-10 02:33:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 521 transitions. [2022-01-10 02:33:23,645 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 521 transitions. Word has length 57 [2022-01-10 02:33:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:23,646 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 521 transitions. [2022-01-10 02:33:23,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 02:33:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 521 transitions. [2022-01-10 02:33:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 02:33:23,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:23,647 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] [2022-01-10 02:33:23,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:33:23,648 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1641391578, now seen corresponding path program 1 times [2022-01-10 02:33:23,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:23,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737694349] [2022-01-10 02:33:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:23,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:23,707 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 02:33:23,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:23,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737694349] [2022-01-10 02:33:23,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737694349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:23,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:23,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:23,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299629584] [2022-01-10 02:33:23,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:23,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:23,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:23,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:23,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:23,709 INFO L87 Difference]: Start difference. First operand 373 states and 521 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 02:33:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:24,044 INFO L93 Difference]: Finished difference Result 703 states and 997 transitions. [2022-01-10 02:33:24,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:33:24,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 57 [2022-01-10 02:33:24,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:24,047 INFO L225 Difference]: With dead ends: 703 [2022-01-10 02:33:24,047 INFO L226 Difference]: Without dead ends: 435 [2022-01-10 02:33:24,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:33:24,048 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 436 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:24,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 688 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:33:24,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-01-10 02:33:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 373. [2022-01-10 02:33:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 295 states have (on average 1.4135593220338982) internal successors, (417), 301 states have internal predecessors, (417), 49 states have call successors, (49), 26 states have call predecessors, (49), 27 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-01-10 02:33:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 518 transitions. [2022-01-10 02:33:24,076 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 518 transitions. Word has length 57 [2022-01-10 02:33:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:24,077 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 518 transitions. [2022-01-10 02:33:24,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 02:33:24,077 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 518 transitions. [2022-01-10 02:33:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 02:33:24,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:24,078 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] [2022-01-10 02:33:24,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:33:24,078 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:24,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash 743998300, now seen corresponding path program 1 times [2022-01-10 02:33:24,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:24,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494470278] [2022-01-10 02:33:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:24,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,203 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 02:33:24,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:24,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494470278] [2022-01-10 02:33:24,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494470278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:24,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:24,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:24,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042532652] [2022-01-10 02:33:24,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:24,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:24,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:24,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:24,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:24,205 INFO L87 Difference]: Start difference. First operand 373 states and 518 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 02:33:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:24,655 INFO L93 Difference]: Finished difference Result 739 states and 1054 transitions. [2022-01-10 02:33:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:33:24,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 57 [2022-01-10 02:33:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:24,658 INFO L225 Difference]: With dead ends: 739 [2022-01-10 02:33:24,658 INFO L226 Difference]: Without dead ends: 472 [2022-01-10 02:33:24,659 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 02:33:24,659 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 267 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:24,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 916 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:33:24,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-01-10 02:33:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 382. [2022-01-10 02:33:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 304 states have (on average 1.4013157894736843) internal successors, (426), 310 states have internal predecessors, (426), 49 states have call successors, (49), 26 states have call predecessors, (49), 27 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-01-10 02:33:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 527 transitions. [2022-01-10 02:33:24,675 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 527 transitions. Word has length 57 [2022-01-10 02:33:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:24,675 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 527 transitions. [2022-01-10 02:33:24,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 02:33:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 527 transitions. [2022-01-10 02:33:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 02:33:24,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:24,676 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] [2022-01-10 02:33:24,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:33:24,676 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:24,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash 671611742, now seen corresponding path program 1 times [2022-01-10 02:33:24,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:24,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655254955] [2022-01-10 02:33:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:24,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:24,792 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 02:33:24,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:24,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655254955] [2022-01-10 02:33:24,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655254955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:24,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:24,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:24,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632358024] [2022-01-10 02:33:24,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:24,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:24,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:24,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:24,795 INFO L87 Difference]: Start difference. First operand 382 states and 527 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 02:33:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:25,604 INFO L93 Difference]: Finished difference Result 1537 states and 2220 transitions. [2022-01-10 02:33:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 02:33:25,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 57 [2022-01-10 02:33:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:25,610 INFO L225 Difference]: With dead ends: 1537 [2022-01-10 02:33:25,610 INFO L226 Difference]: Without dead ends: 1261 [2022-01-10 02:33:25,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:33:25,612 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 938 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:25,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [957 Valid, 913 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:33:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2022-01-10 02:33:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1090. [2022-01-10 02:33:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 865 states have (on average 1.3734104046242774) internal successors, (1188), 886 states have internal predecessors, (1188), 136 states have call successors, (136), 80 states have call predecessors, (136), 87 states have return successors, (187), 126 states have call predecessors, (187), 134 states have call successors, (187) [2022-01-10 02:33:25,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1511 transitions. [2022-01-10 02:33:25,664 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1511 transitions. Word has length 57 [2022-01-10 02:33:25,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:25,664 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1511 transitions. [2022-01-10 02:33:25,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 02:33:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1511 transitions. [2022-01-10 02:33:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:25,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:25,665 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 02:33:25,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:33:25,665 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:25,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:25,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1385451018, now seen corresponding path program 1 times [2022-01-10 02:33:25,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:25,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662757513] [2022-01-10 02:33:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:25,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:25,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:25,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:25,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:25,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:25,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:25,729 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 02:33:25,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:25,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662757513] [2022-01-10 02:33:25,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662757513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:25,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:25,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:33:25,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402850324] [2022-01-10 02:33:25,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:25,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:33:25,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:33:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:25,731 INFO L87 Difference]: Start difference. First operand 1090 states and 1511 transitions. 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 02:33:26,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:26,210 INFO L93 Difference]: Finished difference Result 1313 states and 1826 transitions. [2022-01-10 02:33:26,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:33:26,210 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 02:33:26,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:26,215 INFO L225 Difference]: With dead ends: 1313 [2022-01-10 02:33:26,215 INFO L226 Difference]: Without dead ends: 1225 [2022-01-10 02:33:26,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:33:26,216 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 532 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:26,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 897 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:33:26,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-01-10 02:33:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1186. [2022-01-10 02:33:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 941 states have (on average 1.3740701381509033) internal successors, (1293), 964 states have internal predecessors, (1293), 147 states have call successors, (147), 87 states have call predecessors, (147), 96 states have return successors, (203), 138 states have call predecessors, (203), 145 states have call successors, (203) [2022-01-10 02:33:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1643 transitions. [2022-01-10 02:33:26,267 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1643 transitions. Word has length 65 [2022-01-10 02:33:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:26,267 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 1643 transitions. [2022-01-10 02:33:26,267 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 02:33:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1643 transitions. [2022-01-10 02:33:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:26,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:26,268 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 02:33:26,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:33:26,268 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:26,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:26,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1789236969, now seen corresponding path program 1 times [2022-01-10 02:33:26,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:26,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807736908] [2022-01-10 02:33:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:26,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,340 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 02:33:26,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:26,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807736908] [2022-01-10 02:33:26,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807736908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:26,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:26,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:33:26,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259450860] [2022-01-10 02:33:26,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:26,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:33:26,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:26,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:33:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:26,341 INFO L87 Difference]: Start difference. First operand 1186 states and 1643 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:26,900 INFO L93 Difference]: Finished difference Result 1533 states and 2120 transitions. [2022-01-10 02:33:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:33:26,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:33:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:26,905 INFO L225 Difference]: With dead ends: 1533 [2022-01-10 02:33:26,905 INFO L226 Difference]: Without dead ends: 1356 [2022-01-10 02:33:26,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:33:26,906 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 706 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:26,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 1040 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:33:26,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2022-01-10 02:33:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1282. [2022-01-10 02:33:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1017 states have (on average 1.3736479842674534) internal successors, (1397), 1042 states have internal predecessors, (1397), 158 states have call successors, (158), 94 states have call predecessors, (158), 105 states have return successors, (222), 150 states have call predecessors, (222), 156 states have call successors, (222) [2022-01-10 02:33:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1777 transitions. [2022-01-10 02:33:26,960 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1777 transitions. Word has length 65 [2022-01-10 02:33:26,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:26,960 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 1777 transitions. [2022-01-10 02:33:26,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:26,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1777 transitions. [2022-01-10 02:33:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:26,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:26,962 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 02:33:26,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:33:26,962 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:26,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash -239349141, now seen corresponding path program 1 times [2022-01-10 02:33:26,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:26,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486645777] [2022-01-10 02:33:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:26,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,050 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 02:33:27,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:27,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486645777] [2022-01-10 02:33:27,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486645777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:27,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:27,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:33:27,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516727462] [2022-01-10 02:33:27,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:27,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:33:27,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:27,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:33:27,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:33:27,052 INFO L87 Difference]: Start difference. First operand 1282 states and 1777 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:27,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:27,499 INFO L93 Difference]: Finished difference Result 1583 states and 2191 transitions. [2022-01-10 02:33:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:33:27,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 02:33:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:27,504 INFO L225 Difference]: With dead ends: 1583 [2022-01-10 02:33:27,504 INFO L226 Difference]: Without dead ends: 1316 [2022-01-10 02:33:27,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:33:27,506 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 305 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:27,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 1078 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:33:27,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2022-01-10 02:33:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1287. [2022-01-10 02:33:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1021 states have (on average 1.3702252693437806) internal successors, (1399), 1046 states have internal predecessors, (1399), 158 states have call successors, (158), 94 states have call predecessors, (158), 106 states have return successors, (223), 151 states have call predecessors, (223), 156 states have call successors, (223) [2022-01-10 02:33:27,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1780 transitions. [2022-01-10 02:33:27,556 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1780 transitions. Word has length 65 [2022-01-10 02:33:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:27,556 INFO L470 AbstractCegarLoop]: Abstraction has 1287 states and 1780 transitions. [2022-01-10 02:33:27,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1780 transitions. [2022-01-10 02:33:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:27,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:27,558 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 02:33:27,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:33:27,558 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:27,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1268708439, now seen corresponding path program 1 times [2022-01-10 02:33:27,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:27,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362602108] [2022-01-10 02:33:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:27,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:27,670 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 02:33:27,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:27,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362602108] [2022-01-10 02:33:27,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362602108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:27,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:27,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:33:27,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498693081] [2022-01-10 02:33:27,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:27,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:33:27,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:27,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:33:27,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:33:27,672 INFO L87 Difference]: Start difference. First operand 1287 states and 1780 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-10 02:33:28,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:28,944 INFO L93 Difference]: Finished difference Result 2949 states and 4052 transitions. [2022-01-10 02:33:28,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 02:33:28,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-01-10 02:33:28,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:28,953 INFO L225 Difference]: With dead ends: 2949 [2022-01-10 02:33:28,953 INFO L226 Difference]: Without dead ends: 2677 [2022-01-10 02:33:28,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 02:33:28,956 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 1324 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:28,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 1467 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:33:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2022-01-10 02:33:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2427. [2022-01-10 02:33:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 1921 states have (on average 1.3430504945340969) internal successors, (2580), 1966 states have internal predecessors, (2580), 275 states have call successors, (275), 196 states have call predecessors, (275), 229 states have return successors, (409), 269 states have call predecessors, (409), 273 states have call successors, (409) [2022-01-10 02:33:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3264 transitions. [2022-01-10 02:33:29,068 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3264 transitions. Word has length 65 [2022-01-10 02:33:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:29,069 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 3264 transitions. [2022-01-10 02:33:29,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-10 02:33:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3264 transitions. [2022-01-10 02:33:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:29,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:29,074 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 02:33:29,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:33:29,074 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:29,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:29,074 INFO L85 PathProgramCache]: Analyzing trace with hash -217259350, now seen corresponding path program 1 times [2022-01-10 02:33:29,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:29,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875105361] [2022-01-10 02:33:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:29,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,146 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 02:33:29,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:29,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875105361] [2022-01-10 02:33:29,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875105361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:29,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:29,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:33:29,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474332948] [2022-01-10 02:33:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:29,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:33:29,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:33:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:33:29,148 INFO L87 Difference]: Start difference. First operand 2427 states and 3264 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:29,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:29,726 INFO L93 Difference]: Finished difference Result 4028 states and 5388 transitions. [2022-01-10 02:33:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:33:29,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 02:33:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:29,736 INFO L225 Difference]: With dead ends: 4028 [2022-01-10 02:33:29,736 INFO L226 Difference]: Without dead ends: 2616 [2022-01-10 02:33:29,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:33:29,739 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 206 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:29,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1193 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:33:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2022-01-10 02:33:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2472. [2022-01-10 02:33:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 1957 states have (on average 1.3321410321921308) internal successors, (2607), 2002 states have internal predecessors, (2607), 275 states have call successors, (275), 196 states have call predecessors, (275), 238 states have return successors, (421), 278 states have call predecessors, (421), 273 states have call successors, (421) [2022-01-10 02:33:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3303 transitions. [2022-01-10 02:33:29,847 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3303 transitions. Word has length 65 [2022-01-10 02:33:29,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:29,847 INFO L470 AbstractCegarLoop]: Abstraction has 2472 states and 3303 transitions. [2022-01-10 02:33:29,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3303 transitions. [2022-01-10 02:33:29,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:29,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:29,849 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 02:33:29,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:33:29,849 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1168944044, now seen corresponding path program 1 times [2022-01-10 02:33:29,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:29,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066681155] [2022-01-10 02:33:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:29,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:29,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:29,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066681155] [2022-01-10 02:33:29,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066681155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:29,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:29,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:33:29,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085479607] [2022-01-10 02:33:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:29,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:33:29,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:33:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:29,921 INFO L87 Difference]: Start difference. First operand 2472 states and 3303 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:30,506 INFO L93 Difference]: Finished difference Result 3907 states and 5142 transitions. [2022-01-10 02:33:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:33:30,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:33:30,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:30,515 INFO L225 Difference]: With dead ends: 3907 [2022-01-10 02:33:30,515 INFO L226 Difference]: Without dead ends: 2670 [2022-01-10 02:33:30,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:33:30,519 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 680 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:30,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 814 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:33:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2022-01-10 02:33:30,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2450. [2022-01-10 02:33:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 1943 states have (on average 1.3293875450334534) internal successors, (2583), 1982 states have internal predecessors, (2583), 275 states have call successors, (275), 196 states have call predecessors, (275), 230 states have return successors, (405), 276 states have call predecessors, (405), 273 states have call successors, (405) [2022-01-10 02:33:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3263 transitions. [2022-01-10 02:33:30,620 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3263 transitions. Word has length 65 [2022-01-10 02:33:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:30,620 INFO L470 AbstractCegarLoop]: Abstraction has 2450 states and 3263 transitions. [2022-01-10 02:33:30,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:30,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3263 transitions. [2022-01-10 02:33:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:30,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:30,621 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 02:33:30,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:33:30,621 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:30,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1034930538, now seen corresponding path program 1 times [2022-01-10 02:33:30,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:30,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292139962] [2022-01-10 02:33:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:30,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:30,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:30,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:30,674 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 02:33:30,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:30,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292139962] [2022-01-10 02:33:30,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292139962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:30,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:30,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:30,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139411501] [2022-01-10 02:33:30,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:30,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:30,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:30,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:30,676 INFO L87 Difference]: Start difference. First operand 2450 states and 3263 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:31,041 INFO L93 Difference]: Finished difference Result 5525 states and 7242 transitions. [2022-01-10 02:33:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:33:31,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:33:31,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:31,057 INFO L225 Difference]: With dead ends: 5525 [2022-01-10 02:33:31,057 INFO L226 Difference]: Without dead ends: 4093 [2022-01-10 02:33:31,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:33:31,062 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 653 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:31,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 655 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:33:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2022-01-10 02:33:31,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 3821. [2022-01-10 02:33:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3821 states, 3009 states have (on average 1.296111665004985) internal successors, (3900), 3069 states have internal predecessors, (3900), 427 states have call successors, (427), 319 states have call predecessors, (427), 383 states have return successors, (677), 440 states have call predecessors, (677), 425 states have call successors, (677) [2022-01-10 02:33:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 5004 transitions. [2022-01-10 02:33:31,276 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 5004 transitions. Word has length 65 [2022-01-10 02:33:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:31,276 INFO L470 AbstractCegarLoop]: Abstraction has 3821 states and 5004 transitions. [2022-01-10 02:33:31,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 5004 transitions. [2022-01-10 02:33:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:33:31,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:31,278 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 02:33:31,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:33:31,278 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:31,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1593552473, now seen corresponding path program 1 times [2022-01-10 02:33:31,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:31,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176250545] [2022-01-10 02:33:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:31,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:31,318 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 02:33:31,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:31,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176250545] [2022-01-10 02:33:31,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176250545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:31,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:31,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:33:31,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792507305] [2022-01-10 02:33:31,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:31,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:33:31,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:31,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:33:31,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:33:31,320 INFO L87 Difference]: Start difference. First operand 3821 states and 5004 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:31,776 INFO L93 Difference]: Finished difference Result 8839 states and 11518 transitions. [2022-01-10 02:33:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:33:31,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 02:33:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:31,798 INFO L225 Difference]: With dead ends: 8839 [2022-01-10 02:33:31,798 INFO L226 Difference]: Without dead ends: 6015 [2022-01-10 02:33:31,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:33:31,805 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 377 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:31,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 766 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:33:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6015 states. [2022-01-10 02:33:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6015 to 5499. [2022-01-10 02:33:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5499 states, 4294 states have (on average 1.2808570097810899) internal successors, (5500), 4361 states have internal predecessors, (5500), 621 states have call successors, (621), 493 states have call predecessors, (621), 582 states have return successors, (998), 652 states have call predecessors, (998), 619 states have call successors, (998) [2022-01-10 02:33:32,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 7119 transitions. [2022-01-10 02:33:32,062 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 7119 transitions. Word has length 66 [2022-01-10 02:33:32,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:32,063 INFO L470 AbstractCegarLoop]: Abstraction has 5499 states and 7119 transitions. [2022-01-10 02:33:32,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 7119 transitions. [2022-01-10 02:33:32,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 02:33:32,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:32,065 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:32,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:33:32,066 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:32,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:32,066 INFO L85 PathProgramCache]: Analyzing trace with hash -455119352, now seen corresponding path program 1 times [2022-01-10 02:33:32,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:32,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366154371] [2022-01-10 02:33:32,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:32,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:32,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:32,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:32,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:32,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:32,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366154371] [2022-01-10 02:33:32,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366154371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:32,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:32,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:32,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352220847] [2022-01-10 02:33:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:32,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:32,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:32,113 INFO L87 Difference]: Start difference. First operand 5499 states and 7119 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:33:32,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:32,583 INFO L93 Difference]: Finished difference Result 7129 states and 9121 transitions. [2022-01-10 02:33:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:33:32,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-01-10 02:33:32,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:32,617 INFO L225 Difference]: With dead ends: 7129 [2022-01-10 02:33:32,617 INFO L226 Difference]: Without dead ends: 7126 [2022-01-10 02:33:32,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:33:32,622 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 918 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:32,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 554 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:33:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2022-01-10 02:33:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6553. [2022-01-10 02:33:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6553 states, 5097 states have (on average 1.2693741416519522) internal successors, (6470), 5173 states have internal predecessors, (6470), 747 states have call successors, (747), 607 states have call predecessors, (747), 707 states have return successors, (1191), 780 states have call predecessors, (1191), 746 states have call successors, (1191) [2022-01-10 02:33:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6553 states to 6553 states and 8408 transitions. [2022-01-10 02:33:32,932 INFO L78 Accepts]: Start accepts. Automaton has 6553 states and 8408 transitions. Word has length 73 [2022-01-10 02:33:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:32,933 INFO L470 AbstractCegarLoop]: Abstraction has 6553 states and 8408 transitions. [2022-01-10 02:33:32,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:33:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6553 states and 8408 transitions. [2022-01-10 02:33:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 02:33:32,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:32,934 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:32,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:33:32,935 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:32,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1224424688, now seen corresponding path program 1 times [2022-01-10 02:33:32,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:32,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491599427] [2022-01-10 02:33:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:32,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:33,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:33,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491599427] [2022-01-10 02:33:33,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491599427] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:33,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232173700] [2022-01-10 02:33:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:33,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:33,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:33,018 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 02:33:33,050 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 02:33:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:33,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:33:33,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:33,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:33:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:33,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232173700] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:33:33,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:33:33,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-01-10 02:33:33,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606626855] [2022-01-10 02:33:33,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:33:33,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:33:33,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:33:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:33:33,664 INFO L87 Difference]: Start difference. First operand 6553 states and 8408 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-01-10 02:33:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:35,050 INFO L93 Difference]: Finished difference Result 14199 states and 17936 transitions. [2022-01-10 02:33:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-10 02:33:35,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-01-10 02:33:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:35,090 INFO L225 Difference]: With dead ends: 14199 [2022-01-10 02:33:35,090 INFO L226 Difference]: Without dead ends: 14196 [2022-01-10 02:33:35,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-01-10 02:33:35,099 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 1211 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:35,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1269 Valid, 1246 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:33:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14196 states. [2022-01-10 02:33:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14196 to 11811. [2022-01-10 02:33:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11811 states, 9189 states have (on average 1.2600935901621504) internal successors, (11579), 9317 states have internal predecessors, (11579), 1313 states have call successors, (1313), 1097 states have call predecessors, (1313), 1307 states have return successors, (2130), 1404 states have call predecessors, (2130), 1312 states have call successors, (2130) [2022-01-10 02:33:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11811 states to 11811 states and 15022 transitions. [2022-01-10 02:33:35,739 INFO L78 Accepts]: Start accepts. Automaton has 11811 states and 15022 transitions. Word has length 74 [2022-01-10 02:33:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:35,740 INFO L470 AbstractCegarLoop]: Abstraction has 11811 states and 15022 transitions. [2022-01-10 02:33:35,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-01-10 02:33:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 11811 states and 15022 transitions. [2022-01-10 02:33:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 02:33:35,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:35,742 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:35,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 02:33:35,955 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,SelfDestructingSolverStorable14 [2022-01-10 02:33:35,955 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:35,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:35,956 INFO L85 PathProgramCache]: Analyzing trace with hash -499209592, now seen corresponding path program 2 times [2022-01-10 02:33:35,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:35,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320399190] [2022-01-10 02:33:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:35,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:35,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:35,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:35,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:36,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:36,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320399190] [2022-01-10 02:33:36,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320399190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:36,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:36,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:33:36,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268972005] [2022-01-10 02:33:36,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:36,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:33:36,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:36,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:33:36,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:33:36,002 INFO L87 Difference]: Start difference. First operand 11811 states and 15022 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:33:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:36,620 INFO L93 Difference]: Finished difference Result 18354 states and 23364 transitions. [2022-01-10 02:33:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:33:36,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-01-10 02:33:36,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:36,643 INFO L225 Difference]: With dead ends: 18354 [2022-01-10 02:33:36,643 INFO L226 Difference]: Without dead ends: 8416 [2022-01-10 02:33:36,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:33:36,662 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 423 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:36,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 783 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:33:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2022-01-10 02:33:37,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 7864. [2022-01-10 02:33:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7864 states, 6136 states have (on average 1.2416883963494132) internal successors, (7619), 6220 states have internal predecessors, (7619), 880 states have call successors, (880), 721 states have call predecessors, (880), 846 states have return successors, (1349), 930 states have call predecessors, (1349), 879 states have call successors, (1349) [2022-01-10 02:33:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7864 states to 7864 states and 9848 transitions. [2022-01-10 02:33:37,141 INFO L78 Accepts]: Start accepts. Automaton has 7864 states and 9848 transitions. Word has length 77 [2022-01-10 02:33:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:37,141 INFO L470 AbstractCegarLoop]: Abstraction has 7864 states and 9848 transitions. [2022-01-10 02:33:37,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:33:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7864 states and 9848 transitions. [2022-01-10 02:33:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 02:33:37,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:37,144 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:37,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:33:37,145 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:37,145 INFO L85 PathProgramCache]: Analyzing trace with hash 867535010, now seen corresponding path program 1 times [2022-01-10 02:33:37,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:37,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315175901] [2022-01-10 02:33:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:37,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:37,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:37,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:37,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:37,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:37,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-10 02:33:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:33:37,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:37,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315175901] [2022-01-10 02:33:37,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315175901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:37,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:37,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:33:37,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026274410] [2022-01-10 02:33:37,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:37,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:33:37,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:33:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:37,220 INFO L87 Difference]: Start difference. First operand 7864 states and 9848 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:33:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:38,405 INFO L93 Difference]: Finished difference Result 21738 states and 27065 transitions. [2022-01-10 02:33:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 02:33:38,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-01-10 02:33:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:38,448 INFO L225 Difference]: With dead ends: 21738 [2022-01-10 02:33:38,448 INFO L226 Difference]: Without dead ends: 14895 [2022-01-10 02:33:38,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-01-10 02:33:38,464 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 765 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:38,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 1054 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:33:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14895 states. [2022-01-10 02:33:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14895 to 14036. [2022-01-10 02:33:39,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14036 states, 10812 states have (on average 1.212171661117277) internal successors, (13106), 11002 states have internal predecessors, (13106), 1596 states have call successors, (1596), 1325 states have call predecessors, (1596), 1626 states have return successors, (2752), 1722 states have call predecessors, (2752), 1595 states have call successors, (2752) [2022-01-10 02:33:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14036 states to 14036 states and 17454 transitions. [2022-01-10 02:33:39,135 INFO L78 Accepts]: Start accepts. Automaton has 14036 states and 17454 transitions. Word has length 84 [2022-01-10 02:33:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:39,135 INFO L470 AbstractCegarLoop]: Abstraction has 14036 states and 17454 transitions. [2022-01-10 02:33:39,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:33:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 14036 states and 17454 transitions. [2022-01-10 02:33:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 02:33:39,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:39,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:39,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:33:39,141 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:39,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 260386383, now seen corresponding path program 1 times [2022-01-10 02:33:39,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:39,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072402101] [2022-01-10 02:33:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:39,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:39,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:39,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-10 02:33:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:39,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:39,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:33:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 02:33:39,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:39,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072402101] [2022-01-10 02:33:39,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072402101] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:39,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121215379] [2022-01-10 02:33:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:39,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:39,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:39,197 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 02:33:39,198 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 02:33:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:39,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:33:39,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 02:33:39,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:33:39,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121215379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:39,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:33:39,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:33:39,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204303098] [2022-01-10 02:33:39,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:39,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:33:39,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:39,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:33:39,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:39,353 INFO L87 Difference]: Start difference. First operand 14036 states and 17454 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:33:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:39,908 INFO L93 Difference]: Finished difference Result 15912 states and 20081 transitions. [2022-01-10 02:33:39,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:33:39,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 92 [2022-01-10 02:33:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:39,949 INFO L225 Difference]: With dead ends: 15912 [2022-01-10 02:33:39,949 INFO L226 Difference]: Without dead ends: 14282 [2022-01-10 02:33:39,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 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 02:33:39,959 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 113 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 624 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 02:33:39,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 624 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:33:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14282 states. [2022-01-10 02:33:40,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14282 to 14282. [2022-01-10 02:33:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14282 states, 11010 states have (on average 1.2143505903723888) internal successors, (13370), 11202 states have internal predecessors, (13370), 1624 states have call successors, (1624), 1343 states have call predecessors, (1624), 1646 states have return successors, (2794), 1750 states have call predecessors, (2794), 1623 states have call successors, (2794) [2022-01-10 02:33:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14282 states to 14282 states and 17788 transitions. [2022-01-10 02:33:40,756 INFO L78 Accepts]: Start accepts. Automaton has 14282 states and 17788 transitions. Word has length 92 [2022-01-10 02:33:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:40,757 INFO L470 AbstractCegarLoop]: Abstraction has 14282 states and 17788 transitions. [2022-01-10 02:33:40,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:33:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 14282 states and 17788 transitions. [2022-01-10 02:33:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 02:33:40,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:40,763 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:40,783 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 02:33:40,980 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 02:33:40,981 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:40,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:40,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1083636890, now seen corresponding path program 1 times [2022-01-10 02:33:40,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:40,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074779122] [2022-01-10 02:33:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:40,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:41,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 02:33:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 02:33:41,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:41,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074779122] [2022-01-10 02:33:41,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074779122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:41,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:41,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:33:41,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498119290] [2022-01-10 02:33:41,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:41,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:33:41,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:33:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:33:41,049 INFO L87 Difference]: Start difference. First operand 14282 states and 17788 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 02:33:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:42,370 INFO L93 Difference]: Finished difference Result 25156 states and 31107 transitions. [2022-01-10 02:33:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 02:33:42,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-01-10 02:33:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:42,414 INFO L225 Difference]: With dead ends: 25156 [2022-01-10 02:33:42,414 INFO L226 Difference]: Without dead ends: 12757 [2022-01-10 02:33:42,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-01-10 02:33:42,436 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 1520 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:42,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 931 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:33:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12757 states. [2022-01-10 02:33:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12757 to 11857. [2022-01-10 02:33:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11857 states, 9176 states have (on average 1.207606800348736) internal successors, (11081), 9335 states have internal predecessors, (11081), 1325 states have call successors, (1325), 1092 states have call predecessors, (1325), 1354 states have return successors, (2126), 1440 states have call predecessors, (2126), 1324 states have call successors, (2126) [2022-01-10 02:33:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11857 states to 11857 states and 14532 transitions. [2022-01-10 02:33:42,965 INFO L78 Accepts]: Start accepts. Automaton has 11857 states and 14532 transitions. Word has length 93 [2022-01-10 02:33:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:42,965 INFO L470 AbstractCegarLoop]: Abstraction has 11857 states and 14532 transitions. [2022-01-10 02:33:42,966 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 02:33:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 11857 states and 14532 transitions. [2022-01-10 02:33:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 02:33:42,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:42,973 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:33:42,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:33:42,973 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:42,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1789084765, now seen corresponding path program 1 times [2022-01-10 02:33:42,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:42,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299416522] [2022-01-10 02:33:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:42,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:42,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:43,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:43,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:43,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-10 02:33:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:43,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:43,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-10 02:33:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:43,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-10 02:33:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 02:33:43,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:43,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299416522] [2022-01-10 02:33:43,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299416522] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:43,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690439931] [2022-01-10 02:33:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:43,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:43,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:43,056 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 02:33:43,057 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 02:33:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:43,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:33:43,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 02:33:43,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:33:43,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690439931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:43,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:33:43,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-01-10 02:33:43,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503014954] [2022-01-10 02:33:43,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:43,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:33:43,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:43,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:33:43,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:43,320 INFO L87 Difference]: Start difference. First operand 11857 states and 14532 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 02:33:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:43,846 INFO L93 Difference]: Finished difference Result 13574 states and 16943 transitions. [2022-01-10 02:33:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:33:43,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 118 [2022-01-10 02:33:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:43,883 INFO L225 Difference]: With dead ends: 13574 [2022-01-10 02:33:43,884 INFO L226 Difference]: Without dead ends: 12576 [2022-01-10 02:33:43,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 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 02:33:43,894 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 196 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 406 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 02:33:43,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 406 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:33:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12576 states. [2022-01-10 02:33:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12576 to 12550. [2022-01-10 02:33:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12550 states, 9734 states have (on average 1.216046846106431) internal successors, (11837), 9902 states have internal predecessors, (11837), 1403 states have call successors, (1403), 1143 states have call predecessors, (1403), 1411 states have return successors, (2230), 1515 states have call predecessors, (2230), 1402 states have call successors, (2230) [2022-01-10 02:33:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12550 states to 12550 states and 15470 transitions. [2022-01-10 02:33:44,525 INFO L78 Accepts]: Start accepts. Automaton has 12550 states and 15470 transitions. Word has length 118 [2022-01-10 02:33:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:44,525 INFO L470 AbstractCegarLoop]: Abstraction has 12550 states and 15470 transitions. [2022-01-10 02:33:44,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 02:33:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand 12550 states and 15470 transitions. [2022-01-10 02:33:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 02:33:44,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:44,534 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:44,553 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 02:33:44,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:44,739 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:44,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:44,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2070810004, now seen corresponding path program 1 times [2022-01-10 02:33:44,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:44,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59499820] [2022-01-10 02:33:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:44,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-10 02:33:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-10 02:33:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-10 02:33:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:33:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-01-10 02:33:44,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59499820] [2022-01-10 02:33:44,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59499820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148486645] [2022-01-10 02:33:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:44,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:44,803 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 02:33:44,831 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 02:33:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:44,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:33:44,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 02:33:45,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:33:45,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148486645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:45,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:33:45,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:33:45,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635592304] [2022-01-10 02:33:45,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:45,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:33:45,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:45,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:33:45,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:45,058 INFO L87 Difference]: Start difference. First operand 12550 states and 15470 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 02:33:45,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:45,547 INFO L93 Difference]: Finished difference Result 14780 states and 18580 transitions. [2022-01-10 02:33:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:33:45,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 134 [2022-01-10 02:33:45,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:45,583 INFO L225 Difference]: With dead ends: 14780 [2022-01-10 02:33:45,583 INFO L226 Difference]: Without dead ends: 12856 [2022-01-10 02:33:45,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 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 02:33:45,597 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 247 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 294 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 02:33:45,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 294 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:33:45,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12856 states. [2022-01-10 02:33:46,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12856 to 12790. [2022-01-10 02:33:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12790 states, 9953 states have (on average 1.2065708831508088) internal successors, (12009), 10118 states have internal predecessors, (12009), 1403 states have call successors, (1403), 1161 states have call predecessors, (1403), 1432 states have return successors, (2224), 1521 states have call predecessors, (2224), 1402 states have call successors, (2224) [2022-01-10 02:33:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12790 states to 12790 states and 15636 transitions. [2022-01-10 02:33:46,337 INFO L78 Accepts]: Start accepts. Automaton has 12790 states and 15636 transitions. Word has length 134 [2022-01-10 02:33:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:46,338 INFO L470 AbstractCegarLoop]: Abstraction has 12790 states and 15636 transitions. [2022-01-10 02:33:46,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 02:33:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 12790 states and 15636 transitions. [2022-01-10 02:33:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 02:33:46,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:46,348 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:46,365 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 02:33:46,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:46,565 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:46,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash -931525195, now seen corresponding path program 1 times [2022-01-10 02:33:46,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:46,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878054000] [2022-01-10 02:33:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:46,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-10 02:33:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-10 02:33:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-10 02:33:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:33:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-01-10 02:33:46,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:46,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878054000] [2022-01-10 02:33:46,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878054000] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:46,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78600740] [2022-01-10 02:33:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:46,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:46,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:46,638 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 02:33:46,639 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 02:33:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:46,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:33:46,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 02:33:46,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:33:46,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78600740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:46,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:33:46,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:33:46,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833069833] [2022-01-10 02:33:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:46,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:33:46,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:33:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:46,871 INFO L87 Difference]: Start difference. First operand 12790 states and 15636 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 02:33:47,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:47,479 INFO L93 Difference]: Finished difference Result 15003 states and 18535 transitions. [2022-01-10 02:33:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:33:47,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 134 [2022-01-10 02:33:47,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:47,513 INFO L225 Difference]: With dead ends: 15003 [2022-01-10 02:33:47,513 INFO L226 Difference]: Without dead ends: 12841 [2022-01-10 02:33:47,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 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 02:33:47,522 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 247 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 405 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 02:33:47,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 405 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:33:47,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12841 states. [2022-01-10 02:33:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12841 to 12772. [2022-01-10 02:33:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12772 states, 9935 states have (on average 1.2015098137896325) internal successors, (11937), 10100 states have internal predecessors, (11937), 1403 states have call successors, (1403), 1161 states have call predecessors, (1403), 1432 states have return successors, (2224), 1521 states have call predecessors, (2224), 1402 states have call successors, (2224) [2022-01-10 02:33:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12772 states to 12772 states and 15564 transitions. [2022-01-10 02:33:48,178 INFO L78 Accepts]: Start accepts. Automaton has 12772 states and 15564 transitions. Word has length 134 [2022-01-10 02:33:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:48,178 INFO L470 AbstractCegarLoop]: Abstraction has 12772 states and 15564 transitions. [2022-01-10 02:33:48,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 02:33:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 12772 states and 15564 transitions. [2022-01-10 02:33:48,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 02:33:48,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:48,186 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:33:48,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-10 02:33:48,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-10 02:33:48,399 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:48,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash -564892461, now seen corresponding path program 1 times [2022-01-10 02:33:48,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:48,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731099086] [2022-01-10 02:33:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:48,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:33:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:33:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:33:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-10 02:33:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-01-10 02:33:48,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:48,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731099086] [2022-01-10 02:33:48,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731099086] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:48,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078247747] [2022-01-10 02:33:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:48,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:48,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:48,484 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 02:33:48,485 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 02:33:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:48,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:33:48,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 02:33:48,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:33:48,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078247747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:48,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:33:48,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:33:48,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076430297] [2022-01-10 02:33:48,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:48,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:33:48,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:48,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:33:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:48,776 INFO L87 Difference]: Start difference. First operand 12772 states and 15564 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 02:33:49,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:49,248 INFO L93 Difference]: Finished difference Result 13697 states and 16818 transitions. [2022-01-10 02:33:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:33:49,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 135 [2022-01-10 02:33:49,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:49,279 INFO L225 Difference]: With dead ends: 13697 [2022-01-10 02:33:49,279 INFO L226 Difference]: Without dead ends: 12606 [2022-01-10 02:33:49,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 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 02:33:49,288 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 75 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 623 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 02:33:49,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 623 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:33:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12606 states. [2022-01-10 02:33:49,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12606 to 12568. [2022-01-10 02:33:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12568 states, 9773 states have (on average 1.1971758927657832) internal successors, (11700), 9936 states have internal predecessors, (11700), 1381 states have call successors, (1381), 1146 states have call predecessors, (1381), 1412 states have return successors, (2184), 1496 states have call predecessors, (2184), 1380 states have call successors, (2184) [2022-01-10 02:33:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12568 states to 12568 states and 15265 transitions. [2022-01-10 02:33:49,919 INFO L78 Accepts]: Start accepts. Automaton has 12568 states and 15265 transitions. Word has length 135 [2022-01-10 02:33:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:49,919 INFO L470 AbstractCegarLoop]: Abstraction has 12568 states and 15265 transitions. [2022-01-10 02:33:49,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 02:33:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 12568 states and 15265 transitions. [2022-01-10 02:33:49,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 02:33:49,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:49,927 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:33:49,944 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 02:33:50,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:50,128 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:50,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:50,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1386105035, now seen corresponding path program 1 times [2022-01-10 02:33:50,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:50,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468677328] [2022-01-10 02:33:50,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:50,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:33:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:33:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:33:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-10 02:33:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-01-10 02:33:50,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:50,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468677328] [2022-01-10 02:33:50,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468677328] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:50,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835080951] [2022-01-10 02:33:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:50,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:50,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:50,190 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 02:33:50,192 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 02:33:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:33:50,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 02:33:50,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:33:50,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835080951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:50,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:33:50,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-01-10 02:33:50,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720520548] [2022-01-10 02:33:50,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:50,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:33:50,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:50,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:33:50,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:33:50,445 INFO L87 Difference]: Start difference. First operand 12568 states and 15265 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 02:33:51,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:51,113 INFO L93 Difference]: Finished difference Result 13904 states and 16977 transitions. [2022-01-10 02:33:51,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:33:51,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 136 [2022-01-10 02:33:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:51,147 INFO L225 Difference]: With dead ends: 13904 [2022-01-10 02:33:51,148 INFO L226 Difference]: Without dead ends: 12561 [2022-01-10 02:33:51,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 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 02:33:51,157 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 300 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:51,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 478 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:33:51,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12561 states. [2022-01-10 02:33:51,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12561 to 12002. [2022-01-10 02:33:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12002 states, 9315 states have (on average 1.191196994095545) internal successors, (11096), 9468 states have internal predecessors, (11096), 1323 states have call successors, (1323), 1103 states have call predecessors, (1323), 1362 states have return successors, (2092), 1440 states have call predecessors, (2092), 1322 states have call successors, (2092) [2022-01-10 02:33:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12002 states to 12002 states and 14511 transitions. [2022-01-10 02:33:51,817 INFO L78 Accepts]: Start accepts. Automaton has 12002 states and 14511 transitions. Word has length 136 [2022-01-10 02:33:51,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:51,817 INFO L470 AbstractCegarLoop]: Abstraction has 12002 states and 14511 transitions. [2022-01-10 02:33:51,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 02:33:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 12002 states and 14511 transitions. [2022-01-10 02:33:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 02:33:51,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:51,825 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:33:51,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-10 02:33:52,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:52,029 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:52,029 INFO L85 PathProgramCache]: Analyzing trace with hash 78962637, now seen corresponding path program 1 times [2022-01-10 02:33:52,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:52,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084552766] [2022-01-10 02:33:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:52,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:33:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:33:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:33:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-10 02:33:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-01-10 02:33:52,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:52,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084552766] [2022-01-10 02:33:52,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084552766] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:52,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985953871] [2022-01-10 02:33:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:52,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:52,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:52,096 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 02:33:52,100 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 02:33:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:33:52,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:52,327 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 02:33:52,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:33:52,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985953871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:52,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:33:52,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-01-10 02:33:52,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501207118] [2022-01-10 02:33:52,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:52,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:33:52,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:52,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:33:52,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:33:52,328 INFO L87 Difference]: Start difference. First operand 12002 states and 14511 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 02:33:53,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:53,009 INFO L93 Difference]: Finished difference Result 13122 states and 15882 transitions. [2022-01-10 02:33:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:33:53,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 136 [2022-01-10 02:33:53,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:53,037 INFO L225 Difference]: With dead ends: 13122 [2022-01-10 02:33:53,037 INFO L226 Difference]: Without dead ends: 11748 [2022-01-10 02:33:53,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 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 02:33:53,046 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 321 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:53,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 486 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:33:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11748 states. [2022-01-10 02:33:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11748 to 11726. [2022-01-10 02:33:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11726 states, 9097 states have (on average 1.1854457513465977) internal successors, (10784), 9246 states have internal predecessors, (10784), 1285 states have call successors, (1285), 1081 states have call predecessors, (1285), 1342 states have return successors, (2043), 1408 states have call predecessors, (2043), 1284 states have call successors, (2043) [2022-01-10 02:33:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11726 states to 11726 states and 14112 transitions. [2022-01-10 02:33:53,783 INFO L78 Accepts]: Start accepts. Automaton has 11726 states and 14112 transitions. Word has length 136 [2022-01-10 02:33:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:53,784 INFO L470 AbstractCegarLoop]: Abstraction has 11726 states and 14112 transitions. [2022-01-10 02:33:53,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 02:33:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 11726 states and 14112 transitions. [2022-01-10 02:33:53,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 02:33:53,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:53,791 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:33:53,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-10 02:33:53,991 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 02:33:53,992 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1976459403, now seen corresponding path program 1 times [2022-01-10 02:33:53,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:53,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263589427] [2022-01-10 02:33:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:53,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:33:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:33:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:33:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-10 02:33:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-01-10 02:33:54,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:54,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263589427] [2022-01-10 02:33:54,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263589427] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:54,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265296535] [2022-01-10 02:33:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:54,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:54,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:54,072 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 02:33:54,073 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 02:33:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 02:33:54,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 02:33:54,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:33:54,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265296535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:54,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:33:54,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-01-10 02:33:54,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265773889] [2022-01-10 02:33:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:54,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:33:54,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:33:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:54,296 INFO L87 Difference]: Start difference. First operand 11726 states and 14112 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 02:33:54,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:54,842 INFO L93 Difference]: Finished difference Result 12853 states and 15487 transitions. [2022-01-10 02:33:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:33:54,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 136 [2022-01-10 02:33:54,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:54,865 INFO L225 Difference]: With dead ends: 12853 [2022-01-10 02:33:54,865 INFO L226 Difference]: Without dead ends: 11754 [2022-01-10 02:33:54,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 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 02:33:54,870 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 10 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1043 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 02:33:54,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1043 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:33:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11754 states. [2022-01-10 02:33:55,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11754 to 11738. [2022-01-10 02:33:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11738 states, 9109 states have (on average 1.1828960368865957) internal successors, (10775), 9258 states have internal predecessors, (10775), 1285 states have call successors, (1285), 1081 states have call predecessors, (1285), 1342 states have return successors, (2043), 1408 states have call predecessors, (2043), 1284 states have call successors, (2043) [2022-01-10 02:33:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11738 states to 11738 states and 14103 transitions. [2022-01-10 02:33:55,524 INFO L78 Accepts]: Start accepts. Automaton has 11738 states and 14103 transitions. Word has length 136 [2022-01-10 02:33:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:55,525 INFO L470 AbstractCegarLoop]: Abstraction has 11738 states and 14103 transitions. [2022-01-10 02:33:55,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 02:33:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 11738 states and 14103 transitions. [2022-01-10 02:33:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 02:33:55,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:55,532 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:55,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-10 02:33:55,738 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 02:33:55,739 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:55,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1219164295, now seen corresponding path program 1 times [2022-01-10 02:33:55,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:55,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036814491] [2022-01-10 02:33:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:55,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:33:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:33:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:33:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:33:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:33:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:33:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:33:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:33:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-10 02:33:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-10 02:33:55,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:55,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036814491] [2022-01-10 02:33:55,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036814491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:55,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:55,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:33:55,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42687655] [2022-01-10 02:33:55,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:55,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:33:55,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:55,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:33:55,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:33:55,817 INFO L87 Difference]: Start difference. First operand 11738 states and 14103 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-01-10 02:33:56,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:56,879 INFO L93 Difference]: Finished difference Result 12713 states and 15200 transitions. [2022-01-10 02:33:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 02:33:56,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 136 [2022-01-10 02:33:56,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:56,911 INFO L225 Difference]: With dead ends: 12713 [2022-01-10 02:33:56,911 INFO L226 Difference]: Without dead ends: 12711 [2022-01-10 02:33:56,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:33:56,919 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 690 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:56,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 770 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:33:56,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12711 states. [2022-01-10 02:33:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12711 to 12442. [2022-01-10 02:33:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12442 states, 9689 states have (on average 1.1791722571988854) internal successors, (11425), 9844 states have internal predecessors, (11425), 1353 states have call successors, (1353), 1129 states have call predecessors, (1353), 1398 states have return successors, (2122), 1478 states have call predecessors, (2122), 1352 states have call successors, (2122) [2022-01-10 02:33:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12442 states to 12442 states and 14900 transitions. [2022-01-10 02:33:57,710 INFO L78 Accepts]: Start accepts. Automaton has 12442 states and 14900 transitions. Word has length 136 [2022-01-10 02:33:57,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:57,710 INFO L470 AbstractCegarLoop]: Abstraction has 12442 states and 14900 transitions. [2022-01-10 02:33:57,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-01-10 02:33:57,710 INFO L276 IsEmpty]: Start isEmpty. Operand 12442 states and 14900 transitions. [2022-01-10 02:33:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:33:57,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:57,718 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:57,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 02:33:57,718 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash 114815496, now seen corresponding path program 1 times [2022-01-10 02:33:57,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:57,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147094691] [2022-01-10 02:33:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:57,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-10 02:33:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:33:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:33:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 02:33:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:33:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 02:33:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-10 02:33:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-10 02:33:57,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:57,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147094691] [2022-01-10 02:33:57,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147094691] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:57,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413565335] [2022-01-10 02:33:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:57,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:57,795 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 02:33:57,808 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 02:33:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 02:33:57,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:33:58,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:33:58,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413565335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:58,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:33:58,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-01-10 02:33:58,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786308986] [2022-01-10 02:33:58,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:58,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:33:58,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:58,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:33:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:33:58,050 INFO L87 Difference]: Start difference. First operand 12442 states and 14900 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 02:33:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:58,466 INFO L93 Difference]: Finished difference Result 17590 states and 21120 transitions. [2022-01-10 02:33:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:33:58,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-01-10 02:33:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:58,485 INFO L225 Difference]: With dead ends: 17590 [2022-01-10 02:33:58,485 INFO L226 Difference]: Without dead ends: 7008 [2022-01-10 02:33:58,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:33:58,501 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 34 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:58,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1283 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:33:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2022-01-10 02:33:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 6566. [2022-01-10 02:33:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6566 states, 5254 states have (on average 1.159307194518462) internal successors, (6091), 5307 states have internal predecessors, (6091), 655 states have call successors, (655), 523 states have call predecessors, (655), 655 states have return successors, (962), 736 states have call predecessors, (962), 654 states have call successors, (962) [2022-01-10 02:33:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 7708 transitions. [2022-01-10 02:33:58,884 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 7708 transitions. Word has length 145 [2022-01-10 02:33:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:58,884 INFO L470 AbstractCegarLoop]: Abstraction has 6566 states and 7708 transitions. [2022-01-10 02:33:58,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 02:33:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 7708 transitions. [2022-01-10 02:33:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 02:33:58,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:58,890 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:33:58,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-01-10 02:33:59,090 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,SelfDestructingSolverStorable27 [2022-01-10 02:33:59,090 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:59,091 INFO L85 PathProgramCache]: Analyzing trace with hash 62040612, now seen corresponding path program 1 times [2022-01-10 02:33:59,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:59,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768485937] [2022-01-10 02:33:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:59,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-10 02:33:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-10 02:33:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-10 02:33:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 02:33:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-10 02:33:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-10 02:33:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-10 02:33:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-01-10 02:33:59,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:59,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768485937] [2022-01-10 02:33:59,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768485937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:59,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:59,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:33:59,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566419228] [2022-01-10 02:33:59,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:59,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:33:59,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:59,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:33:59,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:33:59,145 INFO L87 Difference]: Start difference. First operand 6566 states and 7708 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 02:33:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:59,672 INFO L93 Difference]: Finished difference Result 7114 states and 8326 transitions. [2022-01-10 02:33:59,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:33:59,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-01-10 02:33:59,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:59,683 INFO L225 Difference]: With dead ends: 7114 [2022-01-10 02:33:59,683 INFO L226 Difference]: Without dead ends: 6365 [2022-01-10 02:33:59,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:33:59,686 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 388 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:59,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 535 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:33:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6365 states. [2022-01-10 02:34:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6365 to 6141. [2022-01-10 02:34:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6141 states, 4925 states have (on average 1.1595939086294416) internal successors, (5711), 4975 states have internal predecessors, (5711), 609 states have call successors, (609), 483 states have call predecessors, (609), 605 states have return successors, (898), 683 states have call predecessors, (898), 608 states have call successors, (898) [2022-01-10 02:34:00,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 7218 transitions. [2022-01-10 02:34:00,038 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 7218 transitions. Word has length 147 [2022-01-10 02:34:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:00,038 INFO L470 AbstractCegarLoop]: Abstraction has 6141 states and 7218 transitions. [2022-01-10 02:34:00,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 02:34:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 7218 transitions. [2022-01-10 02:34:00,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 02:34:00,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:00,043 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:00,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 02:34:00,043 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:00,043 INFO L85 PathProgramCache]: Analyzing trace with hash -818503781, now seen corresponding path program 1 times [2022-01-10 02:34:00,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:00,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183495410] [2022-01-10 02:34:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:00,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:34:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:34:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:34:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:34:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-10 02:34:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 02:34:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-10 02:34:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-10 02:34:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-10 02:34:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-10 02:34:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-10 02:34:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-10 02:34:00,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:00,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183495410] [2022-01-10 02:34:00,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183495410] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:34:00,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629997956] [2022-01-10 02:34:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:00,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:34:00,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:34:00,098 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 02:34:00,099 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 02:34:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:34:00,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:34:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 02:34:00,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:34:00,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629997956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:00,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:34:00,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 02:34:00,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383674621] [2022-01-10 02:34:00,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:00,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:34:00,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:00,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:34:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:00,355 INFO L87 Difference]: Start difference. First operand 6141 states and 7218 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 02:34:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:00,639 INFO L93 Difference]: Finished difference Result 7977 states and 9378 transitions. [2022-01-10 02:34:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:34:00,639 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 158 [2022-01-10 02:34:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:00,647 INFO L225 Difference]: With dead ends: 7977 [2022-01-10 02:34:00,647 INFO L226 Difference]: Without dead ends: 3937 [2022-01-10 02:34:00,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:00,653 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 171 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 372 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 02:34:00,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 372 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:34:00,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2022-01-10 02:34:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3937. [2022-01-10 02:34:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3937 states, 3191 states have (on average 1.144468818552178) internal successors, (3652), 3225 states have internal predecessors, (3652), 380 states have call successors, (380), 295 states have call predecessors, (380), 364 states have return successors, (516), 417 states have call predecessors, (516), 379 states have call successors, (516) [2022-01-10 02:34:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 4548 transitions. [2022-01-10 02:34:00,892 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 4548 transitions. Word has length 158 [2022-01-10 02:34:00,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:00,892 INFO L470 AbstractCegarLoop]: Abstraction has 3937 states and 4548 transitions. [2022-01-10 02:34:00,893 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 02:34:00,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 4548 transitions. [2022-01-10 02:34:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 02:34:00,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:00,895 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:00,913 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 02:34:01,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:34:01,096 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:01,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1011844634, now seen corresponding path program 1 times [2022-01-10 02:34:01,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:01,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547278930] [2022-01-10 02:34:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:01,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:34:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 02:34:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:34:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-10 02:34:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-10 02:34:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-10 02:34:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-10 02:34:01,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:01,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547278930] [2022-01-10 02:34:01,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547278930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:01,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:01,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:01,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040890382] [2022-01-10 02:34:01,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:01,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:01,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:01,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:01,160 INFO L87 Difference]: Start difference. First operand 3937 states and 4548 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 02:34:01,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:01,670 INFO L93 Difference]: Finished difference Result 5801 states and 6758 transitions. [2022-01-10 02:34:01,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:34:01,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-01-10 02:34:01,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:01,678 INFO L225 Difference]: With dead ends: 5801 [2022-01-10 02:34:01,678 INFO L226 Difference]: Without dead ends: 4040 [2022-01-10 02:34:01,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:34:01,681 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 313 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:01,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 792 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:34:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2022-01-10 02:34:01,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3496. [2022-01-10 02:34:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3496 states, 2842 states have (on average 1.145320197044335) internal successors, (3255), 2875 states have internal predecessors, (3255), 336 states have call successors, (336), 259 states have call predecessors, (336), 316 states have return successors, (448), 362 states have call predecessors, (448), 335 states have call successors, (448) [2022-01-10 02:34:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 4039 transitions. [2022-01-10 02:34:01,925 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 4039 transitions. Word has length 159 [2022-01-10 02:34:01,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:01,926 INFO L470 AbstractCegarLoop]: Abstraction has 3496 states and 4039 transitions. [2022-01-10 02:34:01,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 02:34:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 4039 transitions. [2022-01-10 02:34:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 02:34:01,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:01,928 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:01,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 02:34:01,929 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:01,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:01,929 INFO L85 PathProgramCache]: Analyzing trace with hash 978764957, now seen corresponding path program 1 times [2022-01-10 02:34:01,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:01,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836674272] [2022-01-10 02:34:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:01,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:34:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 02:34:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 02:34:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-10 02:34:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-10 02:34:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:34:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 02:34:02,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:02,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836674272] [2022-01-10 02:34:02,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836674272] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:34:02,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035669726] [2022-01-10 02:34:02,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:02,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:34:02,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:34:02,019 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 02:34:02,020 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 02:34:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 02:34:02,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:34:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 02:34:02,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:34:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 02:34:02,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035669726] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:34:02,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:34:02,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-01-10 02:34:02,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662075320] [2022-01-10 02:34:02,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:34:02,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 02:34:02,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:02,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 02:34:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:34:02,692 INFO L87 Difference]: Start difference. First operand 3496 states and 4039 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-01-10 02:34:03,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:03,670 INFO L93 Difference]: Finished difference Result 5531 states and 6517 transitions. [2022-01-10 02:34:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 02:34:03,671 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-01-10 02:34:03,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:03,678 INFO L225 Difference]: With dead ends: 5531 [2022-01-10 02:34:03,678 INFO L226 Difference]: Without dead ends: 3783 [2022-01-10 02:34:03,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-01-10 02:34:03,682 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1184 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:03,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 1004 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:34:03,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2022-01-10 02:34:03,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3583. [2022-01-10 02:34:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 2887 states have (on average 1.1323172843782474) internal successors, (3269), 2925 states have internal predecessors, (3269), 358 states have call successors, (358), 283 states have call predecessors, (358), 336 states have return successors, (499), 375 states have call predecessors, (499), 357 states have call successors, (499) [2022-01-10 02:34:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4126 transitions. [2022-01-10 02:34:03,927 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4126 transitions. Word has length 162 [2022-01-10 02:34:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:03,928 INFO L470 AbstractCegarLoop]: Abstraction has 3583 states and 4126 transitions. [2022-01-10 02:34:03,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-01-10 02:34:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4126 transitions. [2022-01-10 02:34:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 02:34:03,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:03,931 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:03,950 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 02:34:04,131 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,SelfDestructingSolverStorable31 [2022-01-10 02:34:04,132 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1575925759, now seen corresponding path program 2 times [2022-01-10 02:34:04,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:04,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934823303] [2022-01-10 02:34:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:04,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-10 02:34:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:34:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:34:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:34:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:34:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:34:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:34:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:34:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-10 02:34:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-10 02:34:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 02:34:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-10 02:34:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-01-10 02:34:04,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:04,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934823303] [2022-01-10 02:34:04,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934823303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:04,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:04,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:04,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14708959] [2022-01-10 02:34:04,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:04,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:04,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:04,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:04,218 INFO L87 Difference]: Start difference. First operand 3583 states and 4126 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-10 02:34:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:04,862 INFO L93 Difference]: Finished difference Result 5452 states and 6270 transitions. [2022-01-10 02:34:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 02:34:04,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 175 [2022-01-10 02:34:04,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:04,866 INFO L225 Difference]: With dead ends: 5452 [2022-01-10 02:34:04,866 INFO L226 Difference]: Without dead ends: 1760 [2022-01-10 02:34:04,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:34:04,871 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 796 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:04,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 710 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:34:04,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2022-01-10 02:34:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1760. [2022-01-10 02:34:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1387 states have (on average 1.1391492429704397) internal successors, (1580), 1408 states have internal predecessors, (1580), 180 states have call successors, (180), 156 states have call predecessors, (180), 192 states have return successors, (286), 195 states have call predecessors, (286), 179 states have call successors, (286) [2022-01-10 02:34:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2046 transitions. [2022-01-10 02:34:04,989 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2046 transitions. Word has length 175 [2022-01-10 02:34:04,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:04,989 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 2046 transitions. [2022-01-10 02:34:04,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-10 02:34:04,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2046 transitions. [2022-01-10 02:34:04,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 02:34:04,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:04,991 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:04,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 02:34:04,991 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:04,992 INFO L85 PathProgramCache]: Analyzing trace with hash -61354190, now seen corresponding path program 1 times [2022-01-10 02:34:04,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:04,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808280294] [2022-01-10 02:34:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:04,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:34:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:34:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-10 02:34:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-10 02:34:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 02:34:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-10 02:34:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-10 02:34:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-10 02:34:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 02:34:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-10 02:34:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-10 02:34:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:34:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 02:34:05,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:05,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808280294] [2022-01-10 02:34:05,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808280294] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:34:05,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471607074] [2022-01-10 02:34:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:05,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:34:05,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:34:05,068 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 02:34:05,098 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 02:34:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 02:34:05,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:34:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-10 02:34:05,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:34:05,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471607074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:05,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:34:05,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-01-10 02:34:05,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934186208] [2022-01-10 02:34:05,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:05,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:34:05,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:05,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:34:05,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:34:05,337 INFO L87 Difference]: Start difference. First operand 1760 states and 2046 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 02:34:05,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:05,542 INFO L93 Difference]: Finished difference Result 3405 states and 3969 transitions. [2022-01-10 02:34:05,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:34:05,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 179 [2022-01-10 02:34:05,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:05,545 INFO L225 Difference]: With dead ends: 3405 [2022-01-10 02:34:05,546 INFO L226 Difference]: Without dead ends: 1477 [2022-01-10 02:34:05,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:34:05,548 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 151 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:05,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 275 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:34:05,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2022-01-10 02:34:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1440. [2022-01-10 02:34:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1143 states have (on average 1.1286089238845145) internal successors, (1290), 1155 states have internal predecessors, (1290), 145 states have call successors, (145), 124 states have call predecessors, (145), 151 states have return successors, (214), 160 states have call predecessors, (214), 144 states have call successors, (214) [2022-01-10 02:34:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1649 transitions. [2022-01-10 02:34:05,671 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1649 transitions. Word has length 179 [2022-01-10 02:34:05,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:05,671 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 1649 transitions. [2022-01-10 02:34:05,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 02:34:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1649 transitions. [2022-01-10 02:34:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-01-10 02:34:05,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:05,673 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 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, 2, 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] [2022-01-10 02:34:05,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-10 02:34:05,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-10 02:34:05,873 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1658574142, now seen corresponding path program 1 times [2022-01-10 02:34:05,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:05,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037625920] [2022-01-10 02:34:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:05,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:34:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 02:34:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 02:34:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:34:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-10 02:34:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-10 02:34:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-10 02:34:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-10 02:34:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-10 02:34:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-10 02:34:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-10 02:34:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-10 02:34:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-10 02:34:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 75 proven. 16 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-01-10 02:34:05,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:05,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037625920] [2022-01-10 02:34:05,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037625920] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:34:05,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987107914] [2022-01-10 02:34:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:05,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:34:05,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:34:05,992 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 02:34:05,993 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 02:34:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:06,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 02:34:06,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:34:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 256 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 02:34:06,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:34:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 107 proven. 7 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-01-10 02:34:06,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987107914] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:34:06,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:34:06,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2022-01-10 02:34:06,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070600343] [2022-01-10 02:34:06,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:34:06,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 02:34:06,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:06,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 02:34:06,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:34:06,840 INFO L87 Difference]: Start difference. First operand 1440 states and 1649 transitions. Second operand has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 8 states have internal predecessors, (228), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-01-10 02:34:07,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:07,228 INFO L93 Difference]: Finished difference Result 1743 states and 1984 transitions. [2022-01-10 02:34:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:34:07,229 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 8 states have internal predecessors, (228), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 253 [2022-01-10 02:34:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:07,229 INFO L225 Difference]: With dead ends: 1743 [2022-01-10 02:34:07,229 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 02:34:07,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 548 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2022-01-10 02:34:07,231 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 346 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:07,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 448 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:34:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 02:34:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 02:34:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:34:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 02:34:07,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 253 [2022-01-10 02:34:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:07,232 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 02:34:07,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 8 states have internal predecessors, (228), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-01-10 02:34:07,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 02:34:07,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 02:34:07,234 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 02:34:07,234 INFO L764 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 02:34:07,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-01-10 02:34:07,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:34:07,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.