/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:34:41,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:34:41,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:34:41,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:34:41,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:34:41,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:34:41,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:34:41,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:34:41,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:34:41,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:34:41,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:34:41,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:34:41,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:34:41,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:34:41,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:34:41,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:34:41,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:34:41,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:34:41,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:34:41,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:34:41,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:34:41,181 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:34:41,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:34:41,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:34:41,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:34:41,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:34:41,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:34:41,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:34:41,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:34:41,183 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:34:41,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:34:41,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:34:41,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:34:41,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:34:41,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:34:41,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:34:41,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:34:41,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:34:41,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:34:41,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:34:41,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:34:41,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:34:41,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:34:41,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:34:41,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:34:41,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:34:41,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:34:41,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:34:41,186 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:34:41,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:34:41,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:34:41,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:34:41,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:34:41,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:34:41,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:34:41,396 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:34:41,397 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:34:41,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2022-01-10 02:34:41,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f18d358/78e57154bd3e4396b6b680ea242c8b80/FLAGe03e97505 [2022-01-10 02:34:41,848 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:34:41,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2022-01-10 02:34:41,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f18d358/78e57154bd3e4396b6b680ea242c8b80/FLAGe03e97505 [2022-01-10 02:34:41,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f18d358/78e57154bd3e4396b6b680ea242c8b80 [2022-01-10 02:34:41,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:34:41,885 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:34:41,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:34:41,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:34:41,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:34:41,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:34:41" (1/1) ... [2022-01-10 02:34:41,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e62f321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:41, skipping insertion in model container [2022-01-10 02:34:41,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:34:41" (1/1) ... [2022-01-10 02:34:41,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:34:41,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:34:42,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[914,927] [2022-01-10 02:34:42,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[7115,7128] [2022-01-10 02:34:42,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:34:42,150 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:34:42,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[914,927] [2022-01-10 02:34:42,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[7115,7128] [2022-01-10 02:34:42,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:34:42,211 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:34:42,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42 WrapperNode [2022-01-10 02:34:42,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:34:42,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:34:42,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:34:42,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:34:42,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (1/1) ... [2022-01-10 02:34:42,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (1/1) ... [2022-01-10 02:34:42,256 INFO L137 Inliner]: procedures = 73, calls = 88, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 929 [2022-01-10 02:34:42,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:34:42,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:34:42,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:34:42,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:34:42,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (1/1) ... [2022-01-10 02:34:42,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (1/1) ... [2022-01-10 02:34:42,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (1/1) ... [2022-01-10 02:34:42,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (1/1) ... [2022-01-10 02:34:42,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (1/1) ... [2022-01-10 02:34:42,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (1/1) ... [2022-01-10 02:34:42,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (1/1) ... [2022-01-10 02:34:42,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:34:42,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:34:42,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:34:42,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:34:42,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (1/1) ... [2022-01-10 02:34:42,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:34:42,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:34:42,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 02:34:42,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 02:34:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:34:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:34:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:34:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 02:34:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 02:34:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 02:34:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 02:34:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 02:34:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 02:34:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 02:34:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 02:34:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 02:34:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 02:34:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 02:34:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 02:34:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 02:34:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 02:34:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 02:34:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 02:34:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 02:34:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 02:34:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 02:34:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 02:34:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:34:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 02:34:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 02:34:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 02:34:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 02:34:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:34:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:34:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 02:34:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 02:34:42,343 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-01-10 02:34:42,343 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-01-10 02:34:42,427 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:34:42,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:34:42,990 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:34:43,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:34:43,003 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-10 02:34:43,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:34:43 BoogieIcfgContainer [2022-01-10 02:34:43,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:34:43,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:34:43,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:34:43,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:34:43,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:34:41" (1/3) ... [2022-01-10 02:34:43,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334995df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:34:43, skipping insertion in model container [2022-01-10 02:34:43,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:42" (2/3) ... [2022-01-10 02:34:43,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334995df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:34:43, skipping insertion in model container [2022-01-10 02:34:43,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:34:43" (3/3) ... [2022-01-10 02:34:43,013 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2022-01-10 02:34:43,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:34:43,017 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:34:43,056 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:34:43,061 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 02:34:43,061 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:34:43,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 383 states have (on average 1.6370757180156659) internal successors, (627), 391 states have internal predecessors, (627), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-10 02:34:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:43,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:43,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:43,086 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:43,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1192357691, now seen corresponding path program 1 times [2022-01-10 02:34:43,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:43,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42083209] [2022-01-10 02:34:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:43,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:43,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:43,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:43,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:43,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:43,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:43,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42083209] [2022-01-10 02:34:43,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42083209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:43,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:43,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:34:43,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62351303] [2022-01-10 02:34:43,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:43,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:34:43,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:43,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:34:43,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:43,460 INFO L87 Difference]: Start difference. First operand has 441 states, 383 states have (on average 1.6370757180156659) internal successors, (627), 391 states have internal predecessors, (627), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:44,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:44,442 INFO L93 Difference]: Finished difference Result 990 states and 1576 transitions. [2022-01-10 02:34:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:34:44,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:34:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:44,459 INFO L225 Difference]: With dead ends: 990 [2022-01-10 02:34:44,459 INFO L226 Difference]: Without dead ends: 565 [2022-01-10 02:34:44,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:34:44,466 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 1083 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:44,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 2299 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:34:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-01-10 02:34:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 526. [2022-01-10 02:34:44,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 451 states have (on average 1.5210643015521064) internal successors, (686), 458 states have internal predecessors, (686), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-01-10 02:34:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 789 transitions. [2022-01-10 02:34:44,523 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 789 transitions. Word has length 65 [2022-01-10 02:34:44,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:44,524 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 789 transitions. [2022-01-10 02:34:44,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 789 transitions. [2022-01-10 02:34:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:44,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:44,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:44,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:34:44,527 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:44,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash -929120350, now seen corresponding path program 1 times [2022-01-10 02:34:44,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:44,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084292833] [2022-01-10 02:34:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:44,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:44,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:44,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:44,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:44,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:44,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:44,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:44,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:44,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084292833] [2022-01-10 02:34:44,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084292833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:44,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:44,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:34:44,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264721309] [2022-01-10 02:34:44,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:44,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:34:44,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:44,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:34:44,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:44,619 INFO L87 Difference]: Start difference. First operand 526 states and 789 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:45,568 INFO L93 Difference]: Finished difference Result 873 states and 1266 transitions. [2022-01-10 02:34:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:34:45,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:34:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:45,572 INFO L225 Difference]: With dead ends: 873 [2022-01-10 02:34:45,572 INFO L226 Difference]: Without dead ends: 696 [2022-01-10 02:34:45,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:34:45,574 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1620 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:45,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 2137 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:34:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-01-10 02:34:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 622. [2022-01-10 02:34:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 527 states have (on average 1.4990512333965844) internal successors, (790), 536 states have internal predecessors, (790), 62 states have call successors, (62), 29 states have call predecessors, (62), 31 states have return successors, (71), 60 states have call predecessors, (71), 58 states have call successors, (71) [2022-01-10 02:34:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 923 transitions. [2022-01-10 02:34:45,614 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 923 transitions. Word has length 65 [2022-01-10 02:34:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:45,615 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 923 transitions. [2022-01-10 02:34:45,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:45,615 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 923 transitions. [2022-01-10 02:34:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:45,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:45,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:45,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:34:45,618 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:45,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:45,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1337260836, now seen corresponding path program 1 times [2022-01-10 02:34:45,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:45,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211124890] [2022-01-10 02:34:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:45,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:45,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:45,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211124890] [2022-01-10 02:34:45,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211124890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:45,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:45,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:34:45,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747486963] [2022-01-10 02:34:45,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:45,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:34:45,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:34:45,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:34:45,757 INFO L87 Difference]: Start difference. First operand 622 states and 923 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:46,598 INFO L93 Difference]: Finished difference Result 923 states and 1337 transitions. [2022-01-10 02:34:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:34:46,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 02:34:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:46,602 INFO L225 Difference]: With dead ends: 923 [2022-01-10 02:34:46,602 INFO L226 Difference]: Without dead ends: 656 [2022-01-10 02:34:46,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:34:46,608 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 851 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:46,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 2584 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:34:46,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-01-10 02:34:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 627. [2022-01-10 02:34:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 531 states have (on average 1.4915254237288136) internal successors, (792), 540 states have internal predecessors, (792), 62 states have call successors, (62), 29 states have call predecessors, (62), 32 states have return successors, (72), 61 states have call predecessors, (72), 58 states have call successors, (72) [2022-01-10 02:34:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 926 transitions. [2022-01-10 02:34:46,629 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 926 transitions. Word has length 65 [2022-01-10 02:34:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:46,630 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 926 transitions. [2022-01-10 02:34:46,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 926 transitions. [2022-01-10 02:34:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:46,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:46,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:46,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:34:46,632 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:46,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:46,632 INFO L85 PathProgramCache]: Analyzing trace with hash 307901538, now seen corresponding path program 1 times [2022-01-10 02:34:46,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:46,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404245467] [2022-01-10 02:34:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:46,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:46,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:46,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404245467] [2022-01-10 02:34:46,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404245467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:46,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:46,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:34:46,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007443138] [2022-01-10 02:34:46,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:46,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:34:46,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:34:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:34:46,720 INFO L87 Difference]: Start difference. First operand 627 states and 926 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:47,492 INFO L93 Difference]: Finished difference Result 945 states and 1359 transitions. [2022-01-10 02:34:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:34:47,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 02:34:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:47,496 INFO L225 Difference]: With dead ends: 945 [2022-01-10 02:34:47,496 INFO L226 Difference]: Without dead ends: 673 [2022-01-10 02:34:47,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:34:47,497 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 852 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:47,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 2581 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:34:47,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-01-10 02:34:47,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 642. [2022-01-10 02:34:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 543 states have (on average 1.4806629834254144) internal successors, (804), 552 states have internal predecessors, (804), 62 states have call successors, (62), 29 states have call predecessors, (62), 35 states have return successors, (75), 64 states have call predecessors, (75), 58 states have call successors, (75) [2022-01-10 02:34:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 941 transitions. [2022-01-10 02:34:47,516 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 941 transitions. Word has length 65 [2022-01-10 02:34:47,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:47,517 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 941 transitions. [2022-01-10 02:34:47,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 941 transitions. [2022-01-10 02:34:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:47,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:47,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:47,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:34:47,519 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1694104932, now seen corresponding path program 1 times [2022-01-10 02:34:47,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:47,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033015276] [2022-01-10 02:34:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:47,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:47,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:47,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033015276] [2022-01-10 02:34:47,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033015276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:47,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:47,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:34:47,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141539531] [2022-01-10 02:34:47,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:47,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:34:47,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:34:47,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:47,613 INFO L87 Difference]: Start difference. First operand 642 states and 941 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:48,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:48,490 INFO L93 Difference]: Finished difference Result 1034 states and 1452 transitions. [2022-01-10 02:34:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:34:48,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:34:48,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:48,495 INFO L225 Difference]: With dead ends: 1034 [2022-01-10 02:34:48,495 INFO L226 Difference]: Without dead ends: 749 [2022-01-10 02:34:48,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:34:48,497 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 1286 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:48,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 2250 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:34:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-01-10 02:34:48,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 654. [2022-01-10 02:34:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 553 states have (on average 1.4719710669077757) internal successors, (814), 562 states have internal predecessors, (814), 63 states have call successors, (63), 30 states have call predecessors, (63), 36 states have return successors, (74), 65 states have call predecessors, (74), 59 states have call successors, (74) [2022-01-10 02:34:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 951 transitions. [2022-01-10 02:34:48,517 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 951 transitions. Word has length 65 [2022-01-10 02:34:48,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:48,517 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 951 transitions. [2022-01-10 02:34:48,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 951 transitions. [2022-01-10 02:34:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:48,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:48,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:48,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:34:48,519 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:48,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:48,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1560091426, now seen corresponding path program 1 times [2022-01-10 02:34:48,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:48,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390752095] [2022-01-10 02:34:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:48,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:48,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:48,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390752095] [2022-01-10 02:34:48,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390752095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:48,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:48,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:48,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655288160] [2022-01-10 02:34:48,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:48,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:48,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:48,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:48,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:48,617 INFO L87 Difference]: Start difference. First operand 654 states and 951 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:48,993 INFO L93 Difference]: Finished difference Result 1296 states and 1798 transitions. [2022-01-10 02:34:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:34:48,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:34:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:48,997 INFO L225 Difference]: With dead ends: 1296 [2022-01-10 02:34:48,997 INFO L226 Difference]: Without dead ends: 1000 [2022-01-10 02:34:48,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:34:48,999 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 1572 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:48,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 1573 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:34:49,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-01-10 02:34:49,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 944. [2022-01-10 02:34:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 777 states have (on average 1.416988416988417) internal successors, (1101), 793 states have internal predecessors, (1101), 98 states have call successors, (98), 52 states have call predecessors, (98), 67 states have return successors, (131), 105 states have call predecessors, (131), 94 states have call successors, (131) [2022-01-10 02:34:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1330 transitions. [2022-01-10 02:34:49,027 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1330 transitions. Word has length 65 [2022-01-10 02:34:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:49,027 INFO L470 AbstractCegarLoop]: Abstraction has 944 states and 1330 transitions. [2022-01-10 02:34:49,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1330 transitions. [2022-01-10 02:34:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:34:49,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:49,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:49,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:34:49,029 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:49,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:49,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1800845042, now seen corresponding path program 1 times [2022-01-10 02:34:49,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:49,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898617306] [2022-01-10 02:34:49,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:49,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:49,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:49,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898617306] [2022-01-10 02:34:49,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898617306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:49,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:49,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:49,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428433800] [2022-01-10 02:34:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:49,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:49,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:49,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:49,081 INFO L87 Difference]: Start difference. First operand 944 states and 1330 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:49,579 INFO L93 Difference]: Finished difference Result 2147 states and 2901 transitions. [2022-01-10 02:34:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:34:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 02:34:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:49,586 INFO L225 Difference]: With dead ends: 2147 [2022-01-10 02:34:49,586 INFO L226 Difference]: Without dead ends: 1540 [2022-01-10 02:34:49,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:34:49,588 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 752 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:49,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 1836 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:34:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2022-01-10 02:34:49,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1425. [2022-01-10 02:34:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1156 states have (on average 1.3685121107266436) internal successors, (1582), 1175 states have internal predecessors, (1582), 143 states have call successors, (143), 96 states have call predecessors, (143), 124 states have return successors, (203), 160 states have call predecessors, (203), 139 states have call successors, (203) [2022-01-10 02:34:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1928 transitions. [2022-01-10 02:34:49,658 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1928 transitions. Word has length 66 [2022-01-10 02:34:49,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:49,658 INFO L470 AbstractCegarLoop]: Abstraction has 1425 states and 1928 transitions. [2022-01-10 02:34:49,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:49,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1928 transitions. [2022-01-10 02:34:49,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:34:49,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:49,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:49,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:34:49,660 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:49,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1035882595, now seen corresponding path program 1 times [2022-01-10 02:34:49,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:49,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590769551] [2022-01-10 02:34:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:49,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:49,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:49,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590769551] [2022-01-10 02:34:49,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590769551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:49,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:49,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:49,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050814227] [2022-01-10 02:34:49,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:49,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:49,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:49,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:49,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:49,711 INFO L87 Difference]: Start difference. First operand 1425 states and 1928 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:50,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:50,004 INFO L93 Difference]: Finished difference Result 3613 states and 4734 transitions. [2022-01-10 02:34:50,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:34:50,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 02:34:50,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:50,013 INFO L225 Difference]: With dead ends: 3613 [2022-01-10 02:34:50,013 INFO L226 Difference]: Without dead ends: 2545 [2022-01-10 02:34:50,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:34:50,016 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 1573 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:50,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 1280 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:34:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2022-01-10 02:34:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2287. [2022-01-10 02:34:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1822 states have (on average 1.3221734357848518) internal successors, (2409), 1851 states have internal predecessors, (2409), 241 states have call successors, (241), 180 states have call predecessors, (241), 222 states have return successors, (339), 262 states have call predecessors, (339), 237 states have call successors, (339) [2022-01-10 02:34:50,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 2989 transitions. [2022-01-10 02:34:50,116 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 2989 transitions. Word has length 66 [2022-01-10 02:34:50,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:50,116 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 2989 transitions. [2022-01-10 02:34:50,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:50,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 2989 transitions. [2022-01-10 02:34:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 02:34:50,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:50,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:50,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:34:50,118 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:50,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:50,118 INFO L85 PathProgramCache]: Analyzing trace with hash 283948209, now seen corresponding path program 1 times [2022-01-10 02:34:50,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:50,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361117338] [2022-01-10 02:34:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:50,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:50,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:50,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361117338] [2022-01-10 02:34:50,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361117338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:50,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:50,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:50,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000567852] [2022-01-10 02:34:50,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:50,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:50,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:50,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:50,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:50,172 INFO L87 Difference]: Start difference. First operand 2287 states and 2989 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:50,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:50,505 INFO L93 Difference]: Finished difference Result 5197 states and 6639 transitions. [2022-01-10 02:34:50,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:34:50,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-01-10 02:34:50,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:50,518 INFO L225 Difference]: With dead ends: 5197 [2022-01-10 02:34:50,518 INFO L226 Difference]: Without dead ends: 3267 [2022-01-10 02:34:50,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:34:50,523 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1554 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:50,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 1316 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:34:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2022-01-10 02:34:50,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 3019. [2022-01-10 02:34:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2390 states have (on average 1.302510460251046) internal successors, (3113), 2427 states have internal predecessors, (3113), 321 states have call successors, (321), 250 states have call predecessors, (321), 306 states have return successors, (448), 348 states have call predecessors, (448), 317 states have call successors, (448) [2022-01-10 02:34:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 3882 transitions. [2022-01-10 02:34:50,615 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 3882 transitions. Word has length 72 [2022-01-10 02:34:50,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:50,616 INFO L470 AbstractCegarLoop]: Abstraction has 3019 states and 3882 transitions. [2022-01-10 02:34:50,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 3882 transitions. [2022-01-10 02:34:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 02:34:50,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:50,617 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:50,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:34:50,618 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:50,618 INFO L85 PathProgramCache]: Analyzing trace with hash -304350912, now seen corresponding path program 1 times [2022-01-10 02:34:50,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:50,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340976326] [2022-01-10 02:34:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:50,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:50,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:50,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340976326] [2022-01-10 02:34:50,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340976326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:50,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:50,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:50,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398040058] [2022-01-10 02:34:50,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:50,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:50,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:50,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:50,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:50,671 INFO L87 Difference]: Start difference. First operand 3019 states and 3882 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:34:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:51,115 INFO L93 Difference]: Finished difference Result 3793 states and 4813 transitions. [2022-01-10 02:34:51,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:34:51,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-01-10 02:34:51,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:51,130 INFO L225 Difference]: With dead ends: 3793 [2022-01-10 02:34:51,130 INFO L226 Difference]: Without dead ends: 3790 [2022-01-10 02:34:51,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:34:51,133 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 1877 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:51,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1887 Valid, 1598 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:34:51,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2022-01-10 02:34:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3513. [2022-01-10 02:34:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 2775 states have (on average 1.2918918918918918) internal successors, (3585), 2817 states have internal predecessors, (3585), 371 states have call successors, (371), 294 states have call predecessors, (371), 365 states have return successors, (527), 408 states have call predecessors, (527), 368 states have call successors, (527) [2022-01-10 02:34:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4483 transitions. [2022-01-10 02:34:51,248 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4483 transitions. Word has length 73 [2022-01-10 02:34:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:51,249 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 4483 transitions. [2022-01-10 02:34:51,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:34:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4483 transitions. [2022-01-10 02:34:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 02:34:51,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:51,250 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:51,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:34:51,250 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash -846258469, now seen corresponding path program 1 times [2022-01-10 02:34:51,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:51,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460159407] [2022-01-10 02:34:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:51,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:51,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:51,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460159407] [2022-01-10 02:34:51,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460159407] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:34:51,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049087914] [2022-01-10 02:34:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:51,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:34:51,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:34:51,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:34:51,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 02:34:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:34:51,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:34:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:51,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:34:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:52,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049087914] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:34:52,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:34:52,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-01-10 02:34:52,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410409803] [2022-01-10 02:34:52,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:34:52,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:34:52,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:52,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:34:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:34:52,003 INFO L87 Difference]: Start difference. First operand 3513 states and 4483 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-01-10 02:34:53,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:53,444 INFO L93 Difference]: Finished difference Result 7954 states and 9969 transitions. [2022-01-10 02:34:53,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-10 02:34:53,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-01-10 02:34:53,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:53,489 INFO L225 Difference]: With dead ends: 7954 [2022-01-10 02:34:53,489 INFO L226 Difference]: Without dead ends: 7951 [2022-01-10 02:34:53,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-01-10 02:34:53,511 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 1783 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:53,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 3016 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:34:53,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7951 states. [2022-01-10 02:34:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7951 to 5303. [2022-01-10 02:34:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5303 states, 4179 states have (on average 1.2828427853553481) internal successors, (5361), 4243 states have internal predecessors, (5361), 555 states have call successors, (555), 452 states have call predecessors, (555), 567 states have return successors, (805), 614 states have call predecessors, (805), 552 states have call successors, (805) [2022-01-10 02:34:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5303 states to 5303 states and 6721 transitions. [2022-01-10 02:34:53,827 INFO L78 Accepts]: Start accepts. Automaton has 5303 states and 6721 transitions. Word has length 74 [2022-01-10 02:34:53,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:53,827 INFO L470 AbstractCegarLoop]: Abstraction has 5303 states and 6721 transitions. [2022-01-10 02:34:53,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-01-10 02:34:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5303 states and 6721 transitions. [2022-01-10 02:34:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 02:34:53,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:53,829 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:53,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 02:34:54,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 02:34:54,047 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:54,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:54,047 INFO L85 PathProgramCache]: Analyzing trace with hash -931904896, now seen corresponding path program 2 times [2022-01-10 02:34:54,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:54,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994320619] [2022-01-10 02:34:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:54,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:54,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:54,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994320619] [2022-01-10 02:34:54,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994320619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:54,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:54,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:54,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938523443] [2022-01-10 02:34:54,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:54,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:54,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:54,094 INFO L87 Difference]: Start difference. First operand 5303 states and 6721 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:34:54,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:54,549 INFO L93 Difference]: Finished difference Result 7985 states and 10094 transitions. [2022-01-10 02:34:54,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:34:54,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-01-10 02:34:54,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:54,568 INFO L225 Difference]: With dead ends: 7985 [2022-01-10 02:34:54,568 INFO L226 Difference]: Without dead ends: 3910 [2022-01-10 02:34:54,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:34:54,576 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1160 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:54,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 1727 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:34:54,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2022-01-10 02:34:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3675. [2022-01-10 02:34:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 2907 states have (on average 1.2731338149294806) internal successors, (3701), 2949 states have internal predecessors, (3701), 387 states have call successors, (387), 308 states have call predecessors, (387), 379 states have return successors, (531), 424 states have call predecessors, (531), 384 states have call successors, (531) [2022-01-10 02:34:54,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 4619 transitions. [2022-01-10 02:34:54,713 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 4619 transitions. Word has length 77 [2022-01-10 02:34:54,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:54,714 INFO L470 AbstractCegarLoop]: Abstraction has 3675 states and 4619 transitions. [2022-01-10 02:34:54,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:34:54,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 4619 transitions. [2022-01-10 02:34:54,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 02:34:54,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:54,717 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:54,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:34:54,717 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:54,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash -840062387, now seen corresponding path program 1 times [2022-01-10 02:34:54,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:54,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578322277] [2022-01-10 02:34:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:54,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-10 02:34:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:34:54,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:54,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578322277] [2022-01-10 02:34:54,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578322277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:54,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:54,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:34:54,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729089527] [2022-01-10 02:34:54,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:54,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:34:54,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:34:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:54,787 INFO L87 Difference]: Start difference. First operand 3675 states and 4619 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:55,886 INFO L93 Difference]: Finished difference Result 10547 states and 13036 transitions. [2022-01-10 02:34:55,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 02:34:55,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-01-10 02:34:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:55,904 INFO L225 Difference]: With dead ends: 10547 [2022-01-10 02:34:55,904 INFO L226 Difference]: Without dead ends: 5910 [2022-01-10 02:34:55,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-01-10 02:34:55,915 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 980 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:55,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [996 Valid, 2340 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:34:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5910 states. [2022-01-10 02:34:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 5590. [2022-01-10 02:34:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4365 states have (on average 1.2426116838487973) internal successors, (5424), 4450 states have internal predecessors, (5424), 591 states have call successors, (591), 482 states have call predecessors, (591), 632 states have return successors, (913), 664 states have call predecessors, (913), 588 states have call successors, (913) [2022-01-10 02:34:56,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 6928 transitions. [2022-01-10 02:34:56,137 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 6928 transitions. Word has length 84 [2022-01-10 02:34:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:56,138 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 6928 transitions. [2022-01-10 02:34:56,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 6928 transitions. [2022-01-10 02:34:56,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 02:34:56,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:56,141 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:56,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:34:56,141 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash 670528542, now seen corresponding path program 1 times [2022-01-10 02:34:56,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:56,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907706404] [2022-01-10 02:34:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:56,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 02:34:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 02:34:56,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:56,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907706404] [2022-01-10 02:34:56,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907706404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:56,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:56,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:34:56,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547272647] [2022-01-10 02:34:56,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:56,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:34:56,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:56,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:34:56,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:34:56,216 INFO L87 Difference]: Start difference. First operand 5590 states and 6928 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:57,311 INFO L93 Difference]: Finished difference Result 9593 states and 11768 transitions. [2022-01-10 02:34:57,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 02:34:57,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-01-10 02:34:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:57,325 INFO L225 Difference]: With dead ends: 9593 [2022-01-10 02:34:57,325 INFO L226 Difference]: Without dead ends: 5000 [2022-01-10 02:34:57,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-01-10 02:34:57,334 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2198 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:57,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 2062 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:34:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5000 states. [2022-01-10 02:34:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5000 to 4666. [2022-01-10 02:34:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4666 states, 3654 states have (on average 1.2378215654077722) internal successors, (4523), 3721 states have internal predecessors, (4523), 492 states have call successors, (492), 397 states have call predecessors, (492), 518 states have return successors, (691), 554 states have call predecessors, (691), 489 states have call successors, (691) [2022-01-10 02:34:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4666 states to 4666 states and 5706 transitions. [2022-01-10 02:34:57,522 INFO L78 Accepts]: Start accepts. Automaton has 4666 states and 5706 transitions. Word has length 93 [2022-01-10 02:34:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:57,522 INFO L470 AbstractCegarLoop]: Abstraction has 4666 states and 5706 transitions. [2022-01-10 02:34:57,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:57,523 INFO L276 IsEmpty]: Start isEmpty. Operand 4666 states and 5706 transitions. [2022-01-10 02:34:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:34:57,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:57,530 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:57,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:34:57,530 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:57,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1155770855, now seen corresponding path program 1 times [2022-01-10 02:34:57,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:57,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071402820] [2022-01-10 02:34:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:57,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-10 02:34:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:34:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:34:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 02:34:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:34:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 02:34:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-10 02:34:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,636 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 02:34:57,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:57,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071402820] [2022-01-10 02:34:57,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071402820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:34:57,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288359563] [2022-01-10 02:34:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:57,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:34:57,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:34:57,637 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 02:34:57,639 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 02:34:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 02:34:57,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:34:57,925 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 02:34:57,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:34:57,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288359563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:57,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:34:57,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-01-10 02:34:57,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76390802] [2022-01-10 02:34:57,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:57,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:57,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:57,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:34:57,929 INFO L87 Difference]: Start difference. First operand 4666 states and 5706 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 02:34:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:58,019 INFO L93 Difference]: Finished difference Result 6832 states and 8329 transitions. [2022-01-10 02:34:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:34:58,019 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 02:34:58,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:58,026 INFO L225 Difference]: With dead ends: 6832 [2022-01-10 02:34:58,026 INFO L226 Difference]: Without dead ends: 2527 [2022-01-10 02:34:58,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:34:58,033 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 34 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3233 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 02:34:58,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 3233 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:34:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-01-10 02:34:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2402. [2022-01-10 02:34:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1967 states have (on average 1.2552109811896288) internal successors, (2469), 1983 states have internal predecessors, (2469), 216 states have call successors, (216), 163 states have call predecessors, (216), 217 states have return successors, (298), 256 states have call predecessors, (298), 213 states have call successors, (298) [2022-01-10 02:34:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 2983 transitions. [2022-01-10 02:34:58,109 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 2983 transitions. Word has length 145 [2022-01-10 02:34:58,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:58,110 INFO L470 AbstractCegarLoop]: Abstraction has 2402 states and 2983 transitions. [2022-01-10 02:34:58,110 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 02:34:58,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 2983 transitions. [2022-01-10 02:34:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 02:34:58,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:58,136 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 02:34:58,157 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 02:34:58,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-10 02:34:58,337 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash -707927933, now seen corresponding path program 1 times [2022-01-10 02:34:58,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:58,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676249943] [2022-01-10 02:34:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:58,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-10 02:34:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-10 02:34:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-10 02:34:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 02:34:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-10 02:34:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-10 02:34:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-10 02:34:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,392 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 02:34:58,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:58,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676249943] [2022-01-10 02:34:58,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676249943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:58,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:58,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:58,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972150134] [2022-01-10 02:34:58,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:58,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:58,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:58,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:58,393 INFO L87 Difference]: Start difference. First operand 2402 states and 2983 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 02:34:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:58,840 INFO L93 Difference]: Finished difference Result 2467 states and 3051 transitions. [2022-01-10 02:34:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:34:58,840 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 02:34:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:58,845 INFO L225 Difference]: With dead ends: 2467 [2022-01-10 02:34:58,845 INFO L226 Difference]: Without dead ends: 2024 [2022-01-10 02:34:58,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:34:58,846 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 673 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:58,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1778 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:34:58,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2022-01-10 02:34:58,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1962. [2022-01-10 02:34:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1623 states have (on average 1.2723351817621689) internal successors, (2065), 1636 states have internal predecessors, (2065), 170 states have call successors, (170), 123 states have call predecessors, (170), 167 states have return successors, (234), 203 states have call predecessors, (234), 167 states have call successors, (234) [2022-01-10 02:34:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2469 transitions. [2022-01-10 02:34:58,909 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2469 transitions. Word has length 147 [2022-01-10 02:34:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:58,909 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2469 transitions. [2022-01-10 02:34:58,909 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 02:34:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2469 transitions. [2022-01-10 02:34:58,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 02:34:58,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:58,912 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 02:34:58,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:34:58,912 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1913489485, now seen corresponding path program 1 times [2022-01-10 02:34:58,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:58,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844107279] [2022-01-10 02:34:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:58,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:34:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 02:34:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:34:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-10 02:34:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-10 02:34:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-10 02:34:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,976 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 02:34:58,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:58,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844107279] [2022-01-10 02:34:58,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844107279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:58,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:58,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:58,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957810329] [2022-01-10 02:34:58,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:58,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:58,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:58,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:58,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:58,977 INFO L87 Difference]: Start difference. First operand 1962 states and 2469 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 02:34:59,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:59,580 INFO L93 Difference]: Finished difference Result 3439 states and 4268 transitions. [2022-01-10 02:34:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:34:59,588 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 02:34:59,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:59,592 INFO L225 Difference]: With dead ends: 3439 [2022-01-10 02:34:59,592 INFO L226 Difference]: Without dead ends: 2063 [2022-01-10 02:34:59,594 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 02:34:59,595 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 600 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:59,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 2262 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:34:59,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2022-01-10 02:34:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1871. [2022-01-10 02:34:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1554 states have (on average 1.274131274131274) internal successors, (1980), 1568 states have internal predecessors, (1980), 161 states have call successors, (161), 118 states have call predecessors, (161), 154 states have return successors, (218), 185 states have call predecessors, (218), 158 states have call successors, (218) [2022-01-10 02:34:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2359 transitions. [2022-01-10 02:34:59,655 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2359 transitions. Word has length 159 [2022-01-10 02:34:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:59,655 INFO L470 AbstractCegarLoop]: Abstraction has 1871 states and 2359 transitions. [2022-01-10 02:34:59,655 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 02:34:59,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2359 transitions. [2022-01-10 02:34:59,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 02:34:59,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:59,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:59,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:34:59,658 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1858661205, now seen corresponding path program 1 times [2022-01-10 02:34:59,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:59,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425041705] [2022-01-10 02:34:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:59,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:34:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 02:34:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 02:34:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-10 02:34:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-10 02:34:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:34:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,752 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 02:34:59,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:59,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425041705] [2022-01-10 02:34:59,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425041705] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:34:59,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808783040] [2022-01-10 02:34:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:59,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:34:59,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:34:59,754 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 02:34:59,767 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 02:34:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 02:34:59,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:35:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 02:35:00,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:35:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 02:35:00,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808783040] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:35:00,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:35:00,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-01-10 02:35:00,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907678758] [2022-01-10 02:35:00,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:35:00,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 02:35:00,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 02:35:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:35:00,490 INFO L87 Difference]: Start difference. First operand 1871 states and 2359 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-01-10 02:35:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:01,470 INFO L93 Difference]: Finished difference Result 3843 states and 4812 transitions. [2022-01-10 02:35:01,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 02:35:01,470 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-01-10 02:35:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:01,475 INFO L225 Difference]: With dead ends: 3843 [2022-01-10 02:35:01,475 INFO L226 Difference]: Without dead ends: 2411 [2022-01-10 02:35:01,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-01-10 02:35:01,478 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 2108 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:01,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 1859 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:35:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2022-01-10 02:35:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2261. [2022-01-10 02:35:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1832 states have (on average 1.2461790393013101) internal successors, (2283), 1854 states have internal predecessors, (2283), 215 states have call successors, (215), 168 states have call predecessors, (215), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2022-01-10 02:35:01,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2830 transitions. [2022-01-10 02:35:01,566 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2830 transitions. Word has length 162 [2022-01-10 02:35:01,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:01,566 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 2830 transitions. [2022-01-10 02:35:01,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-01-10 02:35:01,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2830 transitions. [2022-01-10 02:35:01,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:01,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:01,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:01,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 02:35:01,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-10 02:35:01,781 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:01,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:01,781 INFO L85 PathProgramCache]: Analyzing trace with hash 451963073, now seen corresponding path program 1 times [2022-01-10 02:35:01,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:01,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19737072] [2022-01-10 02:35:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:01,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:01,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:01,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19737072] [2022-01-10 02:35:01,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19737072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:01,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:01,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:35:01,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446060681] [2022-01-10 02:35:01,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:01,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:35:01,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:01,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:35:01,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:35:01,869 INFO L87 Difference]: Start difference. First operand 2261 states and 2830 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:02,950 INFO L93 Difference]: Finished difference Result 2705 states and 3546 transitions. [2022-01-10 02:35:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:35:02,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:02,955 INFO L225 Difference]: With dead ends: 2705 [2022-01-10 02:35:02,956 INFO L226 Difference]: Without dead ends: 2381 [2022-01-10 02:35:02,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:35:02,957 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 992 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:02,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 1224 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:35:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2022-01-10 02:35:03,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2261. [2022-01-10 02:35:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1832 states have (on average 1.2456331877729259) internal successors, (2282), 1854 states have internal predecessors, (2282), 215 states have call successors, (215), 168 states have call predecessors, (215), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2022-01-10 02:35:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2829 transitions. [2022-01-10 02:35:03,096 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2829 transitions. Word has length 157 [2022-01-10 02:35:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:03,096 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 2829 transitions. [2022-01-10 02:35:03,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2829 transitions. [2022-01-10 02:35:03,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:03,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:03,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:03,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:35:03,101 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:03,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1445016385, now seen corresponding path program 1 times [2022-01-10 02:35:03,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:03,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774806209] [2022-01-10 02:35:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:03,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:03,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:03,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:03,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:03,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:03,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774806209] [2022-01-10 02:35:03,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774806209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:03,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:03,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:35:03,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046273062] [2022-01-10 02:35:03,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:03,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:35:03,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:03,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:35:03,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:35:03,181 INFO L87 Difference]: Start difference. First operand 2261 states and 2829 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:05,136 INFO L93 Difference]: Finished difference Result 3147 states and 4260 transitions. [2022-01-10 02:35:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:35:05,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:05,142 INFO L225 Difference]: With dead ends: 3147 [2022-01-10 02:35:05,143 INFO L226 Difference]: Without dead ends: 2831 [2022-01-10 02:35:05,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:35:05,146 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 1554 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:05,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1581 Valid, 1878 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 02:35:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2022-01-10 02:35:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2590. [2022-01-10 02:35:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2135 states have (on average 1.2955503512880562) internal successors, (2766), 2158 states have internal predecessors, (2766), 234 states have call successors, (234), 174 states have call predecessors, (234), 219 states have return successors, (354), 258 states have call predecessors, (354), 231 states have call successors, (354) [2022-01-10 02:35:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 3354 transitions. [2022-01-10 02:35:05,300 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 3354 transitions. Word has length 157 [2022-01-10 02:35:05,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:05,300 INFO L470 AbstractCegarLoop]: Abstraction has 2590 states and 3354 transitions. [2022-01-10 02:35:05,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:05,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 3354 transitions. [2022-01-10 02:35:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:05,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:05,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:05,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 02:35:05,303 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:05,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:05,303 INFO L85 PathProgramCache]: Analyzing trace with hash -778981189, now seen corresponding path program 1 times [2022-01-10 02:35:05,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:05,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295874364] [2022-01-10 02:35:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:05,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:05,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:05,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:05,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:05,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:05,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295874364] [2022-01-10 02:35:05,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295874364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:05,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:05,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:05,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370741799] [2022-01-10 02:35:05,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:05,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:05,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:05,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:05,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:05,394 INFO L87 Difference]: Start difference. First operand 2590 states and 3354 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:07,884 INFO L93 Difference]: Finished difference Result 3940 states and 5536 transitions. [2022-01-10 02:35:07,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:07,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:07,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:07,891 INFO L225 Difference]: With dead ends: 3940 [2022-01-10 02:35:07,891 INFO L226 Difference]: Without dead ends: 3295 [2022-01-10 02:35:07,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:07,893 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 1573 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:07,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1600 Valid, 2912 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 02:35:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2022-01-10 02:35:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2896. [2022-01-10 02:35:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2415 states have (on average 1.3267080745341615) internal successors, (3204), 2439 states have internal predecessors, (3204), 253 states have call successors, (253), 180 states have call predecessors, (253), 226 states have return successors, (375), 278 states have call predecessors, (375), 250 states have call successors, (375) [2022-01-10 02:35:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 3832 transitions. [2022-01-10 02:35:08,032 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 3832 transitions. Word has length 157 [2022-01-10 02:35:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:08,032 INFO L470 AbstractCegarLoop]: Abstraction has 2896 states and 3832 transitions. [2022-01-10 02:35:08,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 3832 transitions. [2022-01-10 02:35:08,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:08,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:08,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:08,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 02:35:08,036 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:08,036 INFO L85 PathProgramCache]: Analyzing trace with hash 619972413, now seen corresponding path program 1 times [2022-01-10 02:35:08,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:08,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75251190] [2022-01-10 02:35:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:08,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:08,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:08,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75251190] [2022-01-10 02:35:08,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75251190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:08,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:08,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:08,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890051938] [2022-01-10 02:35:08,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:08,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:08,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:08,128 INFO L87 Difference]: Start difference. First operand 2896 states and 3832 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:10,672 INFO L93 Difference]: Finished difference Result 5109 states and 7402 transitions. [2022-01-10 02:35:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:10,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:10,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:10,684 INFO L225 Difference]: With dead ends: 5109 [2022-01-10 02:35:10,684 INFO L226 Difference]: Without dead ends: 4158 [2022-01-10 02:35:10,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:10,690 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 1570 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:10,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 2904 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 02:35:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2022-01-10 02:35:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3509. [2022-01-10 02:35:10,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2976 states have (on average 1.3713037634408602) internal successors, (4081), 3002 states have internal predecessors, (4081), 291 states have call successors, (291), 192 states have call predecessors, (291), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2022-01-10 02:35:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4793 transitions. [2022-01-10 02:35:10,858 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4793 transitions. Word has length 157 [2022-01-10 02:35:10,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:10,858 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 4793 transitions. [2022-01-10 02:35:10,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4793 transitions. [2022-01-10 02:35:10,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:10,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:10,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:10,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 02:35:10,862 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:10,862 INFO L85 PathProgramCache]: Analyzing trace with hash -997468037, now seen corresponding path program 1 times [2022-01-10 02:35:10,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:10,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493953720] [2022-01-10 02:35:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:10,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:10,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:10,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:10,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493953720] [2022-01-10 02:35:10,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493953720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:10,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:10,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:10,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128035413] [2022-01-10 02:35:10,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:10,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:10,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:10,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:10,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:10,960 INFO L87 Difference]: Start difference. First operand 3509 states and 4793 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:13,322 INFO L93 Difference]: Finished difference Result 7358 states and 10971 transitions. [2022-01-10 02:35:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:13,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:13,335 INFO L225 Difference]: With dead ends: 7358 [2022-01-10 02:35:13,335 INFO L226 Difference]: Without dead ends: 5794 [2022-01-10 02:35:13,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:13,341 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 1666 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:13,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1693 Valid, 2094 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2563 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 02:35:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5794 states. [2022-01-10 02:35:13,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5794 to 4736. [2022-01-10 02:35:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4736 states, 4099 states have (on average 1.4235179312027324) internal successors, (5835), 4129 states have internal predecessors, (5835), 367 states have call successors, (367), 216 states have call predecessors, (367), 268 states have return successors, (519), 398 states have call predecessors, (519), 364 states have call successors, (519) [2022-01-10 02:35:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 6721 transitions. [2022-01-10 02:35:13,603 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 6721 transitions. Word has length 157 [2022-01-10 02:35:13,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:13,604 INFO L470 AbstractCegarLoop]: Abstraction has 4736 states and 6721 transitions. [2022-01-10 02:35:13,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:13,604 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 6721 transitions. [2022-01-10 02:35:13,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:13,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:13,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:13,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 02:35:13,609 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:13,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:13,609 INFO L85 PathProgramCache]: Analyzing trace with hash -634001539, now seen corresponding path program 1 times [2022-01-10 02:35:13,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:13,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013284251] [2022-01-10 02:35:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:13,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:13,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:13,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013284251] [2022-01-10 02:35:13,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013284251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:13,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:13,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:13,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693279025] [2022-01-10 02:35:13,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:13,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:13,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:13,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:13,693 INFO L87 Difference]: Start difference. First operand 4736 states and 6721 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:16,356 INFO L93 Difference]: Finished difference Result 11855 states and 18125 transitions. [2022-01-10 02:35:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:16,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:16,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:16,377 INFO L225 Difference]: With dead ends: 11855 [2022-01-10 02:35:16,377 INFO L226 Difference]: Without dead ends: 9064 [2022-01-10 02:35:16,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:16,385 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 1562 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2867 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:16,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 2896 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2867 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 02:35:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9064 states. [2022-01-10 02:35:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9064 to 7195. [2022-01-10 02:35:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 6350 states have (on average 1.4722834645669292) internal successors, (9349), 6388 states have internal predecessors, (9349), 519 states have call successors, (519), 264 states have call predecessors, (519), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-01-10 02:35:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10601 transitions. [2022-01-10 02:35:16,792 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10601 transitions. Word has length 157 [2022-01-10 02:35:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:16,792 INFO L470 AbstractCegarLoop]: Abstraction has 7195 states and 10601 transitions. [2022-01-10 02:35:16,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10601 transitions. [2022-01-10 02:35:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:16,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:16,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:16,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 02:35:16,798 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:16,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash -345182149, now seen corresponding path program 1 times [2022-01-10 02:35:16,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:16,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198892550] [2022-01-10 02:35:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:16,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:16,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:16,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198892550] [2022-01-10 02:35:16,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198892550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:16,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:16,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:16,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986809061] [2022-01-10 02:35:16,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:16,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:16,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:16,883 INFO L87 Difference]: Start difference. First operand 7195 states and 10601 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:18,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:18,484 INFO L93 Difference]: Finished difference Result 14402 states and 22250 transitions. [2022-01-10 02:35:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:35:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:18,507 INFO L225 Difference]: With dead ends: 14402 [2022-01-10 02:35:18,507 INFO L226 Difference]: Without dead ends: 9152 [2022-01-10 02:35:18,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:35:18,521 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 1383 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:18,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 1487 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:35:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9152 states. [2022-01-10 02:35:18,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9152 to 7195. [2022-01-10 02:35:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 6350 states have (on average 1.4696062992125984) internal successors, (9332), 6388 states have internal predecessors, (9332), 519 states have call successors, (519), 264 states have call predecessors, (519), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-01-10 02:35:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10584 transitions. [2022-01-10 02:35:18,949 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10584 transitions. Word has length 157 [2022-01-10 02:35:18,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:18,949 INFO L470 AbstractCegarLoop]: Abstraction has 7195 states and 10584 transitions. [2022-01-10 02:35:18,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10584 transitions. [2022-01-10 02:35:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:18,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:18,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:18,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 02:35:18,954 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:18,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:18,954 INFO L85 PathProgramCache]: Analyzing trace with hash -890054723, now seen corresponding path program 1 times [2022-01-10 02:35:18,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:18,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103281031] [2022-01-10 02:35:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:18,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:19,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:19,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103281031] [2022-01-10 02:35:19,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103281031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:19,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:19,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:19,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259924016] [2022-01-10 02:35:19,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:19,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:19,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:19,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:19,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:19,051 INFO L87 Difference]: Start difference. First operand 7195 states and 10584 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:20,746 INFO L93 Difference]: Finished difference Result 14367 states and 22130 transitions. [2022-01-10 02:35:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:35:20,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:20,772 INFO L225 Difference]: With dead ends: 14367 [2022-01-10 02:35:20,772 INFO L226 Difference]: Without dead ends: 9117 [2022-01-10 02:35:20,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:35:20,785 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 1185 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:20,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 1710 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:35:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9117 states. [2022-01-10 02:35:21,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9117 to 7195. [2022-01-10 02:35:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 6350 states have (on average 1.4669291338582677) internal successors, (9315), 6388 states have internal predecessors, (9315), 519 states have call successors, (519), 264 states have call predecessors, (519), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-01-10 02:35:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10567 transitions. [2022-01-10 02:35:21,238 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10567 transitions. Word has length 157 [2022-01-10 02:35:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:21,239 INFO L470 AbstractCegarLoop]: Abstraction has 7195 states and 10567 transitions. [2022-01-10 02:35:21,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10567 transitions. [2022-01-10 02:35:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:21,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:21,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:21,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 02:35:21,243 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:21,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1838106689, now seen corresponding path program 1 times [2022-01-10 02:35:21,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:21,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986655307] [2022-01-10 02:35:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:21,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:21,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:21,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:21,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:21,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986655307] [2022-01-10 02:35:21,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986655307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:21,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:21,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:21,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648001689] [2022-01-10 02:35:21,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:21,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:21,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:21,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:21,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:21,327 INFO L87 Difference]: Start difference. First operand 7195 states and 10567 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:24,583 INFO L93 Difference]: Finished difference Result 20795 states and 32221 transitions. [2022-01-10 02:35:24,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:24,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:24,648 INFO L225 Difference]: With dead ends: 20795 [2022-01-10 02:35:24,648 INFO L226 Difference]: Without dead ends: 15545 [2022-01-10 02:35:24,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:24,657 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 1545 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:24,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 2874 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 02:35:24,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15545 states. [2022-01-10 02:35:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15545 to 12176. [2022-01-10 02:35:25,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12176 states, 10915 states have (on average 1.5023362345396243) internal successors, (16398), 10969 states have internal predecessors, (16398), 823 states have call successors, (823), 360 states have call predecessors, (823), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2022-01-10 02:35:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12176 states to 12176 states and 18436 transitions. [2022-01-10 02:35:25,431 INFO L78 Accepts]: Start accepts. Automaton has 12176 states and 18436 transitions. Word has length 157 [2022-01-10 02:35:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:25,431 INFO L470 AbstractCegarLoop]: Abstraction has 12176 states and 18436 transitions. [2022-01-10 02:35:25,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 12176 states and 18436 transitions. [2022-01-10 02:35:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:25,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:25,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:25,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 02:35:25,438 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1872088957, now seen corresponding path program 1 times [2022-01-10 02:35:25,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:25,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839526012] [2022-01-10 02:35:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:25,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:25,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:25,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839526012] [2022-01-10 02:35:25,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839526012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:25,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:25,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:25,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131181528] [2022-01-10 02:35:25,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:25,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:25,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:25,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:25,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:25,527 INFO L87 Difference]: Start difference. First operand 12176 states and 18436 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:27,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:27,877 INFO L93 Difference]: Finished difference Result 25941 states and 40627 transitions. [2022-01-10 02:35:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:35:27,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:27,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:27,918 INFO L225 Difference]: With dead ends: 25941 [2022-01-10 02:35:27,918 INFO L226 Difference]: Without dead ends: 15710 [2022-01-10 02:35:27,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:35:27,938 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 1184 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:27,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 1703 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:35:27,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15710 states. [2022-01-10 02:35:28,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15710 to 12176. [2022-01-10 02:35:28,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12176 states, 10915 states have (on average 1.4993128721942282) internal successors, (16365), 10969 states have internal predecessors, (16365), 823 states have call successors, (823), 360 states have call predecessors, (823), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2022-01-10 02:35:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12176 states to 12176 states and 18403 transitions. [2022-01-10 02:35:28,757 INFO L78 Accepts]: Start accepts. Automaton has 12176 states and 18403 transitions. Word has length 157 [2022-01-10 02:35:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:28,757 INFO L470 AbstractCegarLoop]: Abstraction has 12176 states and 18403 transitions. [2022-01-10 02:35:28,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 12176 states and 18403 transitions. [2022-01-10 02:35:28,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:28,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:28,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:28,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 02:35:28,763 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:28,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:28,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1437583359, now seen corresponding path program 1 times [2022-01-10 02:35:28,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:28,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256820610] [2022-01-10 02:35:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:28,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:28,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:28,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:28,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:28,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:28,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:28,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256820610] [2022-01-10 02:35:28,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256820610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:28,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:28,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:28,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037107150] [2022-01-10 02:35:28,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:28,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:28,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:28,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:28,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:28,879 INFO L87 Difference]: Start difference. First operand 12176 states and 18403 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:33,311 INFO L93 Difference]: Finished difference Result 38750 states and 60730 transitions. [2022-01-10 02:35:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:33,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 02:35:33,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:33,388 INFO L225 Difference]: With dead ends: 38750 [2022-01-10 02:35:33,388 INFO L226 Difference]: Without dead ends: 28519 [2022-01-10 02:35:33,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:33,413 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 1537 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:33,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 2863 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 02:35:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28519 states. [2022-01-10 02:35:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28519 to 22196. [2022-01-10 02:35:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22196 states, 20103 states have (on average 1.5205193254738099) internal successors, (30567), 20189 states have internal predecessors, (30567), 1431 states have call successors, (1431), 552 states have call predecessors, (1431), 660 states have return successors, (2341), 1518 states have call predecessors, (2341), 1428 states have call successors, (2341) [2022-01-10 02:35:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22196 states to 22196 states and 34339 transitions. [2022-01-10 02:35:34,990 INFO L78 Accepts]: Start accepts. Automaton has 22196 states and 34339 transitions. Word has length 157 [2022-01-10 02:35:34,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:34,991 INFO L470 AbstractCegarLoop]: Abstraction has 22196 states and 34339 transitions. [2022-01-10 02:35:34,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:34,991 INFO L276 IsEmpty]: Start isEmpty. Operand 22196 states and 34339 transitions. [2022-01-10 02:35:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 02:35:35,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:35,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:35,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 02:35:35,001 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:35,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:35,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1007925053, now seen corresponding path program 1 times [2022-01-10 02:35:35,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:35,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016823510] [2022-01-10 02:35:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:35,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:35,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:35,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:35,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:35,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016823510] [2022-01-10 02:35:35,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016823510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:35,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:35,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:35,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096316757] [2022-01-10 02:35:35,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:35,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:35,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:35,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:35,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:35,185 INFO L87 Difference]: Start difference. First operand 22196 states and 34339 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)