./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd09b7e02dd7459ada96201e9b5a915c0f0209c05135bf5a5174f874492a34ab --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:05:06,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:05:06,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:05:06,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:05:06,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:05:06,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:05:06,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:05:06,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:05:06,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:05:06,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:05:06,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:05:06,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:05:06,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:05:06,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:05:06,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:05:06,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:05:06,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:05:06,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:05:06,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:05:06,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:05:06,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:05:06,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:05:06,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:05:06,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:05:06,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:05:06,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:05:06,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:05:06,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:05:06,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:05:06,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:05:06,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:05:06,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:05:06,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:05:06,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:05:06,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:05:06,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:05:06,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:05:06,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:05:06,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:05:06,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:05:06,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:05:06,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:05:06,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:05:06,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:05:06,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:05:06,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:05:06,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:05:06,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:05:06,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:05:06,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:05:06,209 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:05:06,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:05:06,209 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:05:06,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:05:06,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:05:06,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:05:06,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:05:06,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:05:06,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:05:06,232 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:05:06,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:05:06,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:05:06,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:05:06,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:05:06,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:05:06,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:05:06,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:05:06,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:05:06,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:05:06,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:05:06,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:05:06,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:05:06,234 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:05:06,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:05:06,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:05:06,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:05:06,234 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd09b7e02dd7459ada96201e9b5a915c0f0209c05135bf5a5174f874492a34ab [2021-12-07 01:05:06,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:05:06,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:05:06,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:05:06,425 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:05:06,425 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:05:06,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec8_product12.cil.c [2021-12-07 01:05:06,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/data/ab0354699/2c5d026ab769447f8b6c7b2c61fa87a3/FLAGfa1eac13e [2021-12-07 01:05:06,920 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:05:06,920 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/sv-benchmarks/c/product-lines/email_spec8_product12.cil.c [2021-12-07 01:05:06,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/data/ab0354699/2c5d026ab769447f8b6c7b2c61fa87a3/FLAGfa1eac13e [2021-12-07 01:05:07,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/data/ab0354699/2c5d026ab769447f8b6c7b2c61fa87a3 [2021-12-07 01:05:07,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:05:07,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:05:07,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:05:07,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:05:07,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:05:07,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:07,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c0642b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07, skipping insertion in model container [2021-12-07 01:05:07,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:07,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:05:07,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:05:07,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/sv-benchmarks/c/product-lines/email_spec8_product12.cil.c[16969,16982] [2021-12-07 01:05:07,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:05:07,819 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:05:07,854 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/sv-benchmarks/c/product-lines/email_spec8_product12.cil.c[16969,16982] [2021-12-07 01:05:07,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:05:07,923 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:05:07,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07 WrapperNode [2021-12-07 01:05:07,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:05:07,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:05:07,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:05:07,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:05:07,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:07,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:08,007 INFO L137 Inliner]: procedures = 123, calls = 191, calls flagged for inlining = 51, calls inlined = 41, statements flattened = 834 [2021-12-07 01:05:08,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:05:08,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:05:08,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:05:08,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:05:08,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:08,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:08,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:08,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:08,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:08,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:08,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:08,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:05:08,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:05:08,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:05:08,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:05:08,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (1/1) ... [2021-12-07 01:05:08,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:05:08,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:05:08,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:05:08,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:05:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-07 01:05:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-07 01:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-07 01:05:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-07 01:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-07 01:05:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-07 01:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-07 01:05:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-07 01:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-07 01:05:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-07 01:05:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-07 01:05:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-07 01:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-07 01:05:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-07 01:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-07 01:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-07 01:05:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-07 01:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-07 01:05:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-07 01:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-07 01:05:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-07 01:05:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-07 01:05:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-07 01:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-07 01:05:08,114 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-07 01:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-07 01:05:08,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-07 01:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-07 01:05:08,114 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-07 01:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-07 01:05:08,114 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-07 01:05:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:05:08,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:05:08,236 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:05:08,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:05:08,669 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:05:08,678 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:05:08,679 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 01:05:08,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:05:08 BoogieIcfgContainer [2021-12-07 01:05:08,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:05:08,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:05:08,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:05:08,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:05:08,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:05:07" (1/3) ... [2021-12-07 01:05:08,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503196ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:05:08, skipping insertion in model container [2021-12-07 01:05:08,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:07" (2/3) ... [2021-12-07 01:05:08,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503196ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:05:08, skipping insertion in model container [2021-12-07 01:05:08,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:05:08" (3/3) ... [2021-12-07 01:05:08,689 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product12.cil.c [2021-12-07 01:05:08,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:05:08,694 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:05:08,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:05:08,744 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 [2021-12-07 01:05:08,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:05:08,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 206 states have (on average 1.5533980582524272) internal successors, (320), 210 states have internal predecessors, (320), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-07 01:05:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-07 01:05:08,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:08,778 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 01:05:08,778 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:08,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2039353953, now seen corresponding path program 1 times [2021-12-07 01:05:08,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:08,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043252173] [2021-12-07 01:05:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:08,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 01:05:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 01:05:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 01:05:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 01:05:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-07 01:05:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-07 01:05:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:05:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 01:05:09,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:09,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043252173] [2021-12-07 01:05:09,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043252173] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:05:09,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934154932] [2021-12-07 01:05:09,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:09,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:09,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:05:09,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:05:09,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:05:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 01:05:09,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:05:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-07 01:05:09,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:05:09,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934154932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:09,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:05:09,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-12-07 01:05:09,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196103314] [2021-12-07 01:05:09,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:09,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:05:09,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:09,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:05:09,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:05:09,405 INFO L87 Difference]: Start difference. First operand has 262 states, 206 states have (on average 1.5533980582524272) internal successors, (320), 210 states have internal predecessors, (320), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:09,444 INFO L93 Difference]: Finished difference Result 375 states and 558 transitions. [2021-12-07 01:05:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:05:09,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2021-12-07 01:05:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:09,456 INFO L225 Difference]: With dead ends: 375 [2021-12-07 01:05:09,456 INFO L226 Difference]: Without dead ends: 255 [2021-12-07 01:05:09,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:05:09,462 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:09,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:05:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-07 01:05:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-12-07 01:05:09,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 200 states have (on average 1.545) internal successors, (309), 203 states have internal predecessors, (309), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-07 01:05:09,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 386 transitions. [2021-12-07 01:05:09,512 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 386 transitions. Word has length 86 [2021-12-07 01:05:09,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:09,513 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 386 transitions. [2021-12-07 01:05:09,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:09,513 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 386 transitions. [2021-12-07 01:05:09,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-07 01:05:09,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:09,518 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 01:05:09,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:05:09,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:09,721 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:09,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:09,723 INFO L85 PathProgramCache]: Analyzing trace with hash 71453907, now seen corresponding path program 1 times [2021-12-07 01:05:09,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:09,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298809660] [2021-12-07 01:05:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:09,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 01:05:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 01:05:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 01:05:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-07 01:05:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-07 01:05:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-07 01:05:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 01:05:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 01:05:09,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:09,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298809660] [2021-12-07 01:05:09,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298809660] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:05:09,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308013155] [2021-12-07 01:05:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:09,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:09,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:05:09,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:05:09,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:05:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:05:10,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:05:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-07 01:05:10,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:05:10,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308013155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:10,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:05:10,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-07 01:05:10,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339777152] [2021-12-07 01:05:10,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:10,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:05:10,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:10,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:05:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:05:10,241 INFO L87 Difference]: Start difference. First operand 255 states and 386 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:10,282 INFO L93 Difference]: Finished difference Result 365 states and 539 transitions. [2021-12-07 01:05:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:05:10,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-12-07 01:05:10,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:10,285 INFO L225 Difference]: With dead ends: 365 [2021-12-07 01:05:10,286 INFO L226 Difference]: Without dead ends: 258 [2021-12-07 01:05:10,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:05:10,288 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:10,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 766 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:05:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-07 01:05:10,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2021-12-07 01:05:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 202 states have (on average 1.5396039603960396) internal successors, (311), 205 states have internal predecessors, (311), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-07 01:05:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 388 transitions. [2021-12-07 01:05:10,306 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 388 transitions. Word has length 87 [2021-12-07 01:05:10,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:10,307 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 388 transitions. [2021-12-07 01:05:10,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 388 transitions. [2021-12-07 01:05:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-07 01:05:10,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:10,311 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 01:05:10,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:05:10,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-07 01:05:10,513 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:10,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:10,514 INFO L85 PathProgramCache]: Analyzing trace with hash -153867190, now seen corresponding path program 1 times [2021-12-07 01:05:10,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:10,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816035473] [2021-12-07 01:05:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:10,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 01:05:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 01:05:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 01:05:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-07 01:05:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 01:05:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:05:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-07 01:05:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 01:05:10,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:10,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816035473] [2021-12-07 01:05:10,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816035473] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:05:10,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961000314] [2021-12-07 01:05:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:10,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:10,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:05:10,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:05:10,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:05:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:05:10,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:05:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-07 01:05:10,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:05:10,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961000314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:10,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:05:10,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-07 01:05:10,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006910905] [2021-12-07 01:05:10,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:10,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:05:10,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:10,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:05:10,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:05:10,969 INFO L87 Difference]: Start difference. First operand 257 states and 388 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:10,992 INFO L93 Difference]: Finished difference Result 539 states and 827 transitions. [2021-12-07 01:05:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:05:10,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2021-12-07 01:05:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:10,997 INFO L225 Difference]: With dead ends: 539 [2021-12-07 01:05:10,997 INFO L226 Difference]: Without dead ends: 309 [2021-12-07 01:05:10,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:05:11,000 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 99 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:11,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 744 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:05:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-07 01:05:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 301. [2021-12-07 01:05:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 235 states have (on average 1.553191489361702) internal successors, (365), 238 states have internal predecessors, (365), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-07 01:05:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 464 transitions. [2021-12-07 01:05:11,025 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 464 transitions. Word has length 93 [2021-12-07 01:05:11,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:11,025 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 464 transitions. [2021-12-07 01:05:11,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:11,026 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 464 transitions. [2021-12-07 01:05:11,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-07 01:05:11,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:11,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 01:05:11,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:05:11,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:11,232 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:11,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1701782700, now seen corresponding path program 1 times [2021-12-07 01:05:11,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:11,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32255112] [2021-12-07 01:05:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:11,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 01:05:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 01:05:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 01:05:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-07 01:05:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 01:05:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 01:05:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 01:05:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 01:05:11,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:11,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32255112] [2021-12-07 01:05:11,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32255112] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:05:11,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933750960] [2021-12-07 01:05:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:11,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:11,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:05:11,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:05:11,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:05:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:11,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:05:11,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:05:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 01:05:11,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:05:11,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933750960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:11,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:05:11,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-07 01:05:11,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856461388] [2021-12-07 01:05:11,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:11,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:05:11,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:11,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:05:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:05:11,724 INFO L87 Difference]: Start difference. First operand 301 states and 464 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-07 01:05:11,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:11,765 INFO L93 Difference]: Finished difference Result 593 states and 918 transitions. [2021-12-07 01:05:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:05:11,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2021-12-07 01:05:11,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:11,767 INFO L225 Difference]: With dead ends: 593 [2021-12-07 01:05:11,767 INFO L226 Difference]: Without dead ends: 303 [2021-12-07 01:05:11,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:05:11,769 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 117 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:11,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1372 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:05:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-07 01:05:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-12-07 01:05:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 236 states have (on average 1.5508474576271187) internal successors, (366), 240 states have internal predecessors, (366), 50 states have call successors, (50), 15 states have call predecessors, (50), 16 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2021-12-07 01:05:11,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 467 transitions. [2021-12-07 01:05:11,784 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 467 transitions. Word has length 94 [2021-12-07 01:05:11,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:11,785 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 467 transitions. [2021-12-07 01:05:11,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-07 01:05:11,785 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 467 transitions. [2021-12-07 01:05:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-07 01:05:11,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:11,787 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-12-07 01:05:11,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:05:11,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:11,988 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:11,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash 361139953, now seen corresponding path program 1 times [2021-12-07 01:05:11,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:11,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272436463] [2021-12-07 01:05:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:11,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-07 01:05:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 01:05:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 01:05:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-07 01:05:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 01:05:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 01:05:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,176 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 01:05:12,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:12,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272436463] [2021-12-07 01:05:12,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272436463] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:05:12,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246745956] [2021-12-07 01:05:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:12,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:12,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:05:12,178 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:05:12,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:05:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:05:12,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:05:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 01:05:12,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:05:12,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246745956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:12,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:05:12,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-07 01:05:12,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104760054] [2021-12-07 01:05:12,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:12,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:05:12,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:12,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:05:12,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:05:12,403 INFO L87 Difference]: Start difference. First operand 303 states and 467 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-07 01:05:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:12,454 INFO L93 Difference]: Finished difference Result 595 states and 923 transitions. [2021-12-07 01:05:12,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:05:12,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2021-12-07 01:05:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:12,458 INFO L225 Difference]: With dead ends: 595 [2021-12-07 01:05:12,458 INFO L226 Difference]: Without dead ends: 305 [2021-12-07 01:05:12,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:05:12,461 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 116 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:12,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1361 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:05:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-07 01:05:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2021-12-07 01:05:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.5485232067510548) internal successors, (367), 242 states have internal predecessors, (367), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2021-12-07 01:05:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 473 transitions. [2021-12-07 01:05:12,484 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 473 transitions. Word has length 95 [2021-12-07 01:05:12,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:12,484 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 473 transitions. [2021-12-07 01:05:12,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-07 01:05:12,493 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 473 transitions. [2021-12-07 01:05:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-07 01:05:12,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:12,496 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 01:05:12,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:05:12,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:12,697 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:12,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:12,697 INFO L85 PathProgramCache]: Analyzing trace with hash 639964823, now seen corresponding path program 1 times [2021-12-07 01:05:12,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:12,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031974010] [2021-12-07 01:05:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:12,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 01:05:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-07 01:05:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-07 01:05:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 01:05:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 01:05:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 01:05:12,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:12,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031974010] [2021-12-07 01:05:12,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031974010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:12,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:12,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 01:05:12,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795493816] [2021-12-07 01:05:12,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:12,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:05:12,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:12,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:05:12,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:05:12,799 INFO L87 Difference]: Start difference. First operand 305 states and 473 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-07 01:05:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:13,502 INFO L93 Difference]: Finished difference Result 640 states and 998 transitions. [2021-12-07 01:05:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:05:13,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2021-12-07 01:05:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:13,505 INFO L225 Difference]: With dead ends: 640 [2021-12-07 01:05:13,505 INFO L226 Difference]: Without dead ends: 358 [2021-12-07 01:05:13,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:05:13,507 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 676 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:13,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 1203 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 01:05:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-12-07 01:05:13,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 305. [2021-12-07 01:05:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.5485232067510548) internal successors, (367), 242 states have internal predecessors, (367), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2021-12-07 01:05:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 472 transitions. [2021-12-07 01:05:13,526 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 472 transitions. Word has length 96 [2021-12-07 01:05:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:13,526 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 472 transitions. [2021-12-07 01:05:13,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-07 01:05:13,526 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 472 transitions. [2021-12-07 01:05:13,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-07 01:05:13,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:13,528 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 01:05:13,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:05:13,528 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:13,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:13,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1163878910, now seen corresponding path program 2 times [2021-12-07 01:05:13,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:13,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179861977] [2021-12-07 01:05:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:13,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 01:05:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-07 01:05:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 01:05:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 01:05:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 01:05:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 01:05:13,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:13,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179861977] [2021-12-07 01:05:13,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179861977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:13,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:13,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 01:05:13,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593769090] [2021-12-07 01:05:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:13,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:05:13,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:13,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:05:13,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:05:13,604 INFO L87 Difference]: Start difference. First operand 305 states and 472 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-07 01:05:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:14,243 INFO L93 Difference]: Finished difference Result 642 states and 1001 transitions. [2021-12-07 01:05:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:05:14,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2021-12-07 01:05:14,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:14,248 INFO L225 Difference]: With dead ends: 642 [2021-12-07 01:05:14,248 INFO L226 Difference]: Without dead ends: 360 [2021-12-07 01:05:14,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:05:14,251 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 672 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:14,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 1204 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 01:05:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-07 01:05:14,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 307. [2021-12-07 01:05:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 238 states have (on average 1.546218487394958) internal successors, (368), 244 states have internal predecessors, (368), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2021-12-07 01:05:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 475 transitions. [2021-12-07 01:05:14,281 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 475 transitions. Word has length 97 [2021-12-07 01:05:14,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:14,282 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 475 transitions. [2021-12-07 01:05:14,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-07 01:05:14,282 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 475 transitions. [2021-12-07 01:05:14,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-07 01:05:14,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:14,285 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 01:05:14,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 01:05:14,285 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash -223956590, now seen corresponding path program 1 times [2021-12-07 01:05:14,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:14,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144444118] [2021-12-07 01:05:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:14,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-07 01:05:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-07 01:05:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-07 01:05:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 01:05:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 01:05:14,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:14,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144444118] [2021-12-07 01:05:14,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144444118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:14,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:14,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-07 01:05:14,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889190711] [2021-12-07 01:05:14,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:14,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:05:14,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:14,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:05:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:05:14,392 INFO L87 Difference]: Start difference. First operand 307 states and 475 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-07 01:05:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:15,175 INFO L93 Difference]: Finished difference Result 640 states and 996 transitions. [2021-12-07 01:05:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:05:15,176 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 98 [2021-12-07 01:05:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:15,179 INFO L225 Difference]: With dead ends: 640 [2021-12-07 01:05:15,179 INFO L226 Difference]: Without dead ends: 360 [2021-12-07 01:05:15,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-07 01:05:15,181 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 778 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:15,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 1574 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 01:05:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-07 01:05:15,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 307. [2021-12-07 01:05:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 238 states have (on average 1.546218487394958) internal successors, (368), 244 states have internal predecessors, (368), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2021-12-07 01:05:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 474 transitions. [2021-12-07 01:05:15,206 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 474 transitions. Word has length 98 [2021-12-07 01:05:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:15,206 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 474 transitions. [2021-12-07 01:05:15,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-07 01:05:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 474 transitions. [2021-12-07 01:05:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-07 01:05:15,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:15,208 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 01:05:15,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 01:05:15,209 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:15,209 INFO L85 PathProgramCache]: Analyzing trace with hash 749423346, now seen corresponding path program 2 times [2021-12-07 01:05:15,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:15,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635916977] [2021-12-07 01:05:15,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:15,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 01:05:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-07 01:05:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 01:05:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 01:05:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 01:05:15,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:15,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635916977] [2021-12-07 01:05:15,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635916977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:15,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:15,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-07 01:05:15,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175516321] [2021-12-07 01:05:15,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:15,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:05:15,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:15,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:05:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:05:15,315 INFO L87 Difference]: Start difference. First operand 307 states and 474 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-07 01:05:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:16,174 INFO L93 Difference]: Finished difference Result 642 states and 1002 transitions. [2021-12-07 01:05:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:05:16,175 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 99 [2021-12-07 01:05:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:16,178 INFO L225 Difference]: With dead ends: 642 [2021-12-07 01:05:16,178 INFO L226 Difference]: Without dead ends: 362 [2021-12-07 01:05:16,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-07 01:05:16,180 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 774 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:16,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 1575 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 01:05:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-12-07 01:05:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 309. [2021-12-07 01:05:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 239 states have (on average 1.5439330543933054) internal successors, (369), 246 states have internal predecessors, (369), 50 states have call successors, (50), 15 states have call predecessors, (50), 19 states have return successors, (61), 49 states have call predecessors, (61), 49 states have call successors, (61) [2021-12-07 01:05:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 480 transitions. [2021-12-07 01:05:16,198 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 480 transitions. Word has length 99 [2021-12-07 01:05:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:16,198 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 480 transitions. [2021-12-07 01:05:16,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-07 01:05:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 480 transitions. [2021-12-07 01:05:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-07 01:05:16,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:16,200 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 01:05:16,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 01:05:16,200 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash 961117165, now seen corresponding path program 1 times [2021-12-07 01:05:16,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125784963] [2021-12-07 01:05:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:16,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-07 01:05:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-07 01:05:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-07 01:05:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 01:05:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:16,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:16,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125784963] [2021-12-07 01:05:16,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125784963] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:05:16,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354787095] [2021-12-07 01:05:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:16,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:16,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:05:16,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:05:16,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:05:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:16,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:05:16,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:05:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:16,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:05:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:16,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354787095] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:05:16,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:05:16,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-07 01:05:16,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372650753] [2021-12-07 01:05:16,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:05:16,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:05:16,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:05:16,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:16,565 INFO L87 Difference]: Start difference. First operand 309 states and 480 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 01:05:17,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:17,268 INFO L93 Difference]: Finished difference Result 796 states and 1300 transitions. [2021-12-07 01:05:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:05:17,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 100 [2021-12-07 01:05:17,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:17,272 INFO L225 Difference]: With dead ends: 796 [2021-12-07 01:05:17,272 INFO L226 Difference]: Without dead ends: 689 [2021-12-07 01:05:17,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:05:17,274 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 867 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:17,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 1899 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 01:05:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-12-07 01:05:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 612. [2021-12-07 01:05:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 478 states have (on average 1.604602510460251) internal successors, (767), 485 states have internal predecessors, (767), 114 states have call successors, (114), 15 states have call predecessors, (114), 19 states have return successors, (135), 113 states have call predecessors, (135), 113 states have call successors, (135) [2021-12-07 01:05:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1016 transitions. [2021-12-07 01:05:17,307 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1016 transitions. Word has length 100 [2021-12-07 01:05:17,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:17,307 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 1016 transitions. [2021-12-07 01:05:17,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 01:05:17,307 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1016 transitions. [2021-12-07 01:05:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-07 01:05:17,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:17,310 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:17,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:05:17,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 01:05:17,512 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:17,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1027284112, now seen corresponding path program 1 times [2021-12-07 01:05:17,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:17,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48412385] [2021-12-07 01:05:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:17,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-07 01:05:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:05:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 01:05:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:05:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:17,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:17,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48412385] [2021-12-07 01:05:17,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48412385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:17,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:17,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:05:17,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303863759] [2021-12-07 01:05:17,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:17,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:05:17,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:17,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:05:17,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:05:17,576 INFO L87 Difference]: Start difference. First operand 612 states and 1016 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:18,031 INFO L93 Difference]: Finished difference Result 1517 states and 2579 transitions. [2021-12-07 01:05:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:05:18,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2021-12-07 01:05:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:18,039 INFO L225 Difference]: With dead ends: 1517 [2021-12-07 01:05:18,039 INFO L226 Difference]: Without dead ends: 973 [2021-12-07 01:05:18,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:18,043 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 665 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:18,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1011 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:05:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-12-07 01:05:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 912. [2021-12-07 01:05:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 714 states have (on average 1.6134453781512605) internal successors, (1152), 721 states have internal predecessors, (1152), 178 states have call successors, (178), 15 states have call predecessors, (178), 19 states have return successors, (209), 177 states have call predecessors, (209), 177 states have call successors, (209) [2021-12-07 01:05:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1539 transitions. [2021-12-07 01:05:18,096 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1539 transitions. Word has length 106 [2021-12-07 01:05:18,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:18,096 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 1539 transitions. [2021-12-07 01:05:18,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:18,096 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1539 transitions. [2021-12-07 01:05:18,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-07 01:05:18,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:18,100 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:18,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 01:05:18,100 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:18,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1707978199, now seen corresponding path program 1 times [2021-12-07 01:05:18,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:18,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505082981] [2021-12-07 01:05:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:18,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-07 01:05:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 01:05:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 01:05:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 01:05:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:18,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:18,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505082981] [2021-12-07 01:05:18,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505082981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:18,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:18,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:05:18,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289882579] [2021-12-07 01:05:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:18,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:05:18,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:05:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:05:18,164 INFO L87 Difference]: Start difference. First operand 912 states and 1539 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:18,638 INFO L93 Difference]: Finished difference Result 2232 states and 3824 transitions. [2021-12-07 01:05:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:05:18,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2021-12-07 01:05:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:18,648 INFO L225 Difference]: With dead ends: 2232 [2021-12-07 01:05:18,648 INFO L226 Difference]: Without dead ends: 1441 [2021-12-07 01:05:18,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:18,652 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 663 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:18,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1009 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:05:18,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-12-07 01:05:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1380. [2021-12-07 01:05:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1087 states have (on average 1.6182152713891444) internal successors, (1759), 1094 states have internal predecessors, (1759), 273 states have call successors, (273), 15 states have call predecessors, (273), 19 states have return successors, (304), 272 states have call predecessors, (304), 272 states have call successors, (304) [2021-12-07 01:05:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 2336 transitions. [2021-12-07 01:05:18,732 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 2336 transitions. Word has length 107 [2021-12-07 01:05:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:18,732 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 2336 transitions. [2021-12-07 01:05:18,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 2336 transitions. [2021-12-07 01:05:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 01:05:18,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:18,738 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:18,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 01:05:18,738 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1136510194, now seen corresponding path program 1 times [2021-12-07 01:05:18,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:18,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253335502] [2021-12-07 01:05:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:18,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 01:05:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 01:05:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 01:05:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 01:05:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:18,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:18,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253335502] [2021-12-07 01:05:18,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253335502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:18,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:18,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:05:18,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381862787] [2021-12-07 01:05:18,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:18,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:05:18,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:18,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:05:18,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:05:18,798 INFO L87 Difference]: Start difference. First operand 1380 states and 2336 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:19,282 INFO L93 Difference]: Finished difference Result 3279 states and 5665 transitions. [2021-12-07 01:05:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:05:19,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2021-12-07 01:05:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:19,294 INFO L225 Difference]: With dead ends: 3279 [2021-12-07 01:05:19,294 INFO L226 Difference]: Without dead ends: 2145 [2021-12-07 01:05:19,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:19,298 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 661 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:19,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 987 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:05:19,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2021-12-07 01:05:19,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2084. [2021-12-07 01:05:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1668 states have (on average 1.6223021582733812) internal successors, (2706), 1675 states have internal predecessors, (2706), 396 states have call successors, (396), 15 states have call predecessors, (396), 19 states have return successors, (443), 395 states have call predecessors, (443), 395 states have call successors, (443) [2021-12-07 01:05:19,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3545 transitions. [2021-12-07 01:05:19,400 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3545 transitions. Word has length 108 [2021-12-07 01:05:19,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:19,401 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 3545 transitions. [2021-12-07 01:05:19,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3545 transitions. [2021-12-07 01:05:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 01:05:19,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:19,407 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:19,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 01:05:19,407 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:19,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash -665915704, now seen corresponding path program 1 times [2021-12-07 01:05:19,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:19,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796888373] [2021-12-07 01:05:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:19,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-07 01:05:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 01:05:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 01:05:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 01:05:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:19,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:19,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796888373] [2021-12-07 01:05:19,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796888373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:19,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:19,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:05:19,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732818452] [2021-12-07 01:05:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:19,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:05:19,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:05:19,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:05:19,470 INFO L87 Difference]: Start difference. First operand 2084 states and 3545 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:19,979 INFO L93 Difference]: Finished difference Result 4898 states and 8519 transitions. [2021-12-07 01:05:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:05:19,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 109 [2021-12-07 01:05:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:19,996 INFO L225 Difference]: With dead ends: 4898 [2021-12-07 01:05:19,996 INFO L226 Difference]: Without dead ends: 3264 [2021-12-07 01:05:20,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:20,000 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 659 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:20,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 987 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:05:20,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2021-12-07 01:05:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3203. [2021-12-07 01:05:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 2608 states have (on average 1.624616564417178) internal successors, (4237), 2615 states have internal predecessors, (4237), 575 states have call successors, (575), 15 states have call predecessors, (575), 19 states have return successors, (648), 574 states have call predecessors, (648), 574 states have call successors, (648) [2021-12-07 01:05:20,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 5460 transitions. [2021-12-07 01:05:20,186 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 5460 transitions. Word has length 109 [2021-12-07 01:05:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:20,187 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 5460 transitions. [2021-12-07 01:05:20,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 5460 transitions. [2021-12-07 01:05:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-07 01:05:20,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:20,193 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:20,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 01:05:20,193 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:20,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1938092110, now seen corresponding path program 1 times [2021-12-07 01:05:20,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:20,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826802554] [2021-12-07 01:05:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:20,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-07 01:05:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 01:05:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 01:05:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 01:05:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:20,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:20,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826802554] [2021-12-07 01:05:20,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826802554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:20,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:20,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:05:20,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215066960] [2021-12-07 01:05:20,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:20,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:05:20,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:20,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:05:20,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:05:20,278 INFO L87 Difference]: Start difference. First operand 3203 states and 5460 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:20,871 INFO L93 Difference]: Finished difference Result 7816 states and 13618 transitions. [2021-12-07 01:05:20,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:05:20,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2021-12-07 01:05:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:20,900 INFO L225 Difference]: With dead ends: 7816 [2021-12-07 01:05:20,900 INFO L226 Difference]: Without dead ends: 5295 [2021-12-07 01:05:20,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:20,914 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 657 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:20,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1033 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:05:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2021-12-07 01:05:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5234. [2021-12-07 01:05:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 4263 states have (on average 1.615998123387286) internal successors, (6889), 4270 states have internal predecessors, (6889), 951 states have call successors, (951), 15 states have call predecessors, (951), 19 states have return successors, (1068), 950 states have call predecessors, (1068), 950 states have call successors, (1068) [2021-12-07 01:05:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8908 transitions. [2021-12-07 01:05:21,173 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8908 transitions. Word has length 110 [2021-12-07 01:05:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:21,173 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 8908 transitions. [2021-12-07 01:05:21,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8908 transitions. [2021-12-07 01:05:21,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-07 01:05:21,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:21,181 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:21,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 01:05:21,182 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:21,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:21,182 INFO L85 PathProgramCache]: Analyzing trace with hash -461540828, now seen corresponding path program 1 times [2021-12-07 01:05:21,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:21,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794470701] [2021-12-07 01:05:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:21,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-07 01:05:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-07 01:05:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 01:05:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 01:05:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:21,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:21,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794470701] [2021-12-07 01:05:21,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794470701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:21,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:21,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:05:21,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410337065] [2021-12-07 01:05:21,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:21,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:05:21,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:21,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:05:21,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:05:21,247 INFO L87 Difference]: Start difference. First operand 5234 states and 8908 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:21,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:21,959 INFO L93 Difference]: Finished difference Result 12958 states and 22527 transitions. [2021-12-07 01:05:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:05:21,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 111 [2021-12-07 01:05:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:22,001 INFO L225 Difference]: With dead ends: 12958 [2021-12-07 01:05:22,001 INFO L226 Difference]: Without dead ends: 8783 [2021-12-07 01:05:22,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:22,012 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 655 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:22,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 986 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:05:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8783 states. [2021-12-07 01:05:22,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8783 to 8722. [2021-12-07 01:05:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8722 states, 7145 states have (on average 1.6127361791462562) internal successors, (11523), 7152 states have internal predecessors, (11523), 1557 states have call successors, (1557), 15 states have call predecessors, (1557), 19 states have return successors, (1752), 1556 states have call predecessors, (1752), 1556 states have call successors, (1752) [2021-12-07 01:05:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8722 states to 8722 states and 14832 transitions. [2021-12-07 01:05:22,393 INFO L78 Accepts]: Start accepts. Automaton has 8722 states and 14832 transitions. Word has length 111 [2021-12-07 01:05:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:22,393 INFO L470 AbstractCegarLoop]: Abstraction has 8722 states and 14832 transitions. [2021-12-07 01:05:22,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 8722 states and 14832 transitions. [2021-12-07 01:05:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:05:22,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:22,403 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:22,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 01:05:22,403 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1120917424, now seen corresponding path program 1 times [2021-12-07 01:05:22,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:22,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074303551] [2021-12-07 01:05:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:22,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-07 01:05:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 01:05:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 01:05:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 01:05:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:22,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:22,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074303551] [2021-12-07 01:05:22,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074303551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:22,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:22,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:05:22,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993303438] [2021-12-07 01:05:22,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:22,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:05:22,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:22,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:05:22,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:05:22,467 INFO L87 Difference]: Start difference. First operand 8722 states and 14832 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:23,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:23,416 INFO L93 Difference]: Finished difference Result 22617 states and 39233 transitions. [2021-12-07 01:05:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:05:23,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 112 [2021-12-07 01:05:23,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:23,463 INFO L225 Difference]: With dead ends: 22617 [2021-12-07 01:05:23,463 INFO L226 Difference]: Without dead ends: 15376 [2021-12-07 01:05:23,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:23,480 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 653 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:23,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 1017 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:05:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15376 states. [2021-12-07 01:05:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15376 to 15315. [2021-12-07 01:05:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15315 states, 12535 states have (on average 1.6026326286398085) internal successors, (20089), 12542 states have internal predecessors, (20089), 2760 states have call successors, (2760), 15 states have call predecessors, (2760), 19 states have return successors, (3099), 2759 states have call predecessors, (3099), 2759 states have call successors, (3099) [2021-12-07 01:05:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15315 states to 15315 states and 25948 transitions. [2021-12-07 01:05:24,188 INFO L78 Accepts]: Start accepts. Automaton has 15315 states and 25948 transitions. Word has length 112 [2021-12-07 01:05:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:24,188 INFO L470 AbstractCegarLoop]: Abstraction has 15315 states and 25948 transitions. [2021-12-07 01:05:24,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 15315 states and 25948 transitions. [2021-12-07 01:05:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-07 01:05:24,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:24,201 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:24,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 01:05:24,201 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2139517149, now seen corresponding path program 1 times [2021-12-07 01:05:24,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:24,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23910432] [2021-12-07 01:05:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:24,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 01:05:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-07 01:05:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:05:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-07 01:05:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:24,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:24,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23910432] [2021-12-07 01:05:24,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23910432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:24,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:24,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:05:24,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158185337] [2021-12-07 01:05:24,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:24,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:05:24,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:24,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:05:24,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:05:24,261 INFO L87 Difference]: Start difference. First operand 15315 states and 25948 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:25,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:25,577 INFO L93 Difference]: Finished difference Result 40573 states and 70216 transitions. [2021-12-07 01:05:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:05:25,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 113 [2021-12-07 01:05:25,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:25,662 INFO L225 Difference]: With dead ends: 40573 [2021-12-07 01:05:25,663 INFO L226 Difference]: Without dead ends: 27346 [2021-12-07 01:05:25,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:25,694 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 651 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:25,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 992 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:05:25,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27346 states. [2021-12-07 01:05:26,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27346 to 27285. [2021-12-07 01:05:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27285 states, 22466 states have (on average 1.5978367310602688) internal successors, (35897), 22473 states have internal predecessors, (35897), 4799 states have call successors, (4799), 15 states have call predecessors, (4799), 19 states have return successors, (5412), 4798 states have call predecessors, (5412), 4798 states have call successors, (5412) [2021-12-07 01:05:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27285 states to 27285 states and 46108 transitions. [2021-12-07 01:05:26,867 INFO L78 Accepts]: Start accepts. Automaton has 27285 states and 46108 transitions. Word has length 113 [2021-12-07 01:05:26,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:26,867 INFO L470 AbstractCegarLoop]: Abstraction has 27285 states and 46108 transitions. [2021-12-07 01:05:26,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:26,867 INFO L276 IsEmpty]: Start isEmpty. Operand 27285 states and 46108 transitions. [2021-12-07 01:05:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-07 01:05:26,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:26,882 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:26,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 01:05:26,882 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:26,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:26,883 INFO L85 PathProgramCache]: Analyzing trace with hash 345033870, now seen corresponding path program 1 times [2021-12-07 01:05:26,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:26,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275003542] [2021-12-07 01:05:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:26,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 01:05:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 01:05:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 01:05:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-07 01:05:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:26,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:26,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275003542] [2021-12-07 01:05:26,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275003542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:26,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:26,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:05:26,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043875917] [2021-12-07 01:05:26,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:26,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:05:26,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:26,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:05:26,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:05:26,942 INFO L87 Difference]: Start difference. First operand 27285 states and 46108 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:29,158 INFO L93 Difference]: Finished difference Result 74360 states and 127815 transitions. [2021-12-07 01:05:29,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:05:29,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 114 [2021-12-07 01:05:29,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:29,313 INFO L225 Difference]: With dead ends: 74360 [2021-12-07 01:05:29,313 INFO L226 Difference]: Without dead ends: 49895 [2021-12-07 01:05:29,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:29,351 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 649 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:29,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 994 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:05:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49895 states. [2021-12-07 01:05:31,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49895 to 49834. [2021-12-07 01:05:31,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49834 states, 41300 states have (on average 1.5917191283292977) internal successors, (65738), 41307 states have internal predecessors, (65738), 8514 states have call successors, (8514), 15 states have call predecessors, (8514), 19 states have return successors, (9659), 8513 states have call predecessors, (9659), 8513 states have call successors, (9659) [2021-12-07 01:05:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49834 states to 49834 states and 83911 transitions. [2021-12-07 01:05:31,336 INFO L78 Accepts]: Start accepts. Automaton has 49834 states and 83911 transitions. Word has length 114 [2021-12-07 01:05:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:31,336 INFO L470 AbstractCegarLoop]: Abstraction has 49834 states and 83911 transitions. [2021-12-07 01:05:31,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:31,336 INFO L276 IsEmpty]: Start isEmpty. Operand 49834 states and 83911 transitions. [2021-12-07 01:05:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-07 01:05:31,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:31,353 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:31,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 01:05:31,353 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:31,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash 866966051, now seen corresponding path program 1 times [2021-12-07 01:05:31,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:31,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622518459] [2021-12-07 01:05:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:31,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 01:05:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 01:05:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 01:05:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 01:05:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:31,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:31,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622518459] [2021-12-07 01:05:31,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622518459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:31,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:31,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:05:31,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754182725] [2021-12-07 01:05:31,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:31,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:05:31,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:31,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:05:31,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:05:31,407 INFO L87 Difference]: Start difference. First operand 49834 states and 83911 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:35,062 INFO L93 Difference]: Finished difference Result 92846 states and 159946 transitions. [2021-12-07 01:05:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:05:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 115 [2021-12-07 01:05:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:35,336 INFO L225 Difference]: With dead ends: 92846 [2021-12-07 01:05:35,336 INFO L226 Difference]: Without dead ends: 92739 [2021-12-07 01:05:35,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:05:35,376 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 647 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:35,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 992 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:05:35,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92739 states. [2021-12-07 01:05:38,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92739 to 92678. [2021-12-07 01:05:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92678 states, 77345 states have (on average 1.5841230848794363) internal successors, (122524), 77352 states have internal predecessors, (122524), 15313 states have call successors, (15313), 15 states have call predecessors, (15313), 19 states have return successors, (17504), 15312 states have call predecessors, (17504), 15312 states have call successors, (17504) [2021-12-07 01:05:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92678 states to 92678 states and 155341 transitions. [2021-12-07 01:05:39,133 INFO L78 Accepts]: Start accepts. Automaton has 92678 states and 155341 transitions. Word has length 115 [2021-12-07 01:05:39,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:39,133 INFO L470 AbstractCegarLoop]: Abstraction has 92678 states and 155341 transitions. [2021-12-07 01:05:39,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:05:39,133 INFO L276 IsEmpty]: Start isEmpty. Operand 92678 states and 155341 transitions. [2021-12-07 01:05:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-07 01:05:39,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:39,146 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:39,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 01:05:39,147 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:39,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:39,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1101885455, now seen corresponding path program 1 times [2021-12-07 01:05:39,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:39,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106149070] [2021-12-07 01:05:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:39,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 01:05:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 01:05:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 01:05:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 01:05:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:39,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:39,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106149070] [2021-12-07 01:05:39,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106149070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:39,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:39,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-07 01:05:39,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138234990] [2021-12-07 01:05:39,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:39,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 01:05:39,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 01:05:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:05:39,255 INFO L87 Difference]: Start difference. First operand 92678 states and 155341 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-07 01:05:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:47,654 INFO L93 Difference]: Finished difference Result 185071 states and 322138 transitions. [2021-12-07 01:05:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-07 01:05:47,655 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 116 [2021-12-07 01:05:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:48,303 INFO L225 Difference]: With dead ends: 185071 [2021-12-07 01:05:48,303 INFO L226 Difference]: Without dead ends: 184972 [2021-12-07 01:05:48,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=453, Invalid=1527, Unknown=0, NotChecked=0, Total=1980 [2021-12-07 01:05:48,364 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 2631 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 5062 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2631 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 6155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 5062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:48,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2631 Valid, 2837 Invalid, 6155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 5062 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-07 01:05:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184972 states. [2021-12-07 01:05:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184972 to 184542. [2021-12-07 01:05:56,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184542 states, 154089 states have (on average 1.5850774552369085) internal successors, (244243), 153991 states have internal predecessors, (244243), 30409 states have call successors, (30409), 38 states have call predecessors, (30409), 43 states have return successors, (38058), 30518 states have call predecessors, (38058), 30406 states have call successors, (38058) [2021-12-07 01:05:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184542 states to 184542 states and 312710 transitions. [2021-12-07 01:05:56,879 INFO L78 Accepts]: Start accepts. Automaton has 184542 states and 312710 transitions. Word has length 116 [2021-12-07 01:05:56,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:56,879 INFO L470 AbstractCegarLoop]: Abstraction has 184542 states and 312710 transitions. [2021-12-07 01:05:56,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-07 01:05:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand 184542 states and 312710 transitions. [2021-12-07 01:05:56,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 01:05:56,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:56,904 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:56,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 01:05:56,905 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:56,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:56,905 INFO L85 PathProgramCache]: Analyzing trace with hash 912607469, now seen corresponding path program 1 times [2021-12-07 01:05:56,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:56,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349268338] [2021-12-07 01:05:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:56,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:05:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:05:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:05:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:05:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:05:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:05:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 01:05:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 01:05:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 01:05:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 01:05:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:05:56,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:56,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349268338] [2021-12-07 01:05:56,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349268338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:56,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:56,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:05:56,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304795400] [2021-12-07 01:05:56,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:56,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:05:56,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:56,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:05:56,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:05:56,966 INFO L87 Difference]: Start difference. First operand 184542 states and 312710 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-07 01:06:03,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:06:03,396 INFO L93 Difference]: Finished difference Result 184753 states and 319507 transitions. [2021-12-07 01:06:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:06:03,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 117 [2021-12-07 01:06:03,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:06:04,003 INFO L225 Difference]: With dead ends: 184753 [2021-12-07 01:06:04,004 INFO L226 Difference]: Without dead ends: 184553 [2021-12-07 01:06:04,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:06:04,073 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 612 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:06:04,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1136 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:06:04,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184553 states. [2021-12-07 01:06:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184553 to 184447. [2021-12-07 01:06:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184447 states, 154014 states have (on average 1.585122131754256) internal successors, (244131), 153913 states have internal predecessors, (244131), 30396 states have call successors, (30396), 32 states have call predecessors, (30396), 36 states have return successors, (38045), 30505 states have call predecessors, (38045), 30394 states have call successors, (38045) [2021-12-07 01:06:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184447 states to 184447 states and 312572 transitions. [2021-12-07 01:06:12,520 INFO L78 Accepts]: Start accepts. Automaton has 184447 states and 312572 transitions. Word has length 117 [2021-12-07 01:06:12,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:06:12,520 INFO L470 AbstractCegarLoop]: Abstraction has 184447 states and 312572 transitions. [2021-12-07 01:06:12,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-07 01:06:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 184447 states and 312572 transitions. [2021-12-07 01:06:12,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 01:06:12,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:06:12,544 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:06:12,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 01:06:12,545 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:06:12,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:12,545 INFO L85 PathProgramCache]: Analyzing trace with hash 816999966, now seen corresponding path program 1 times [2021-12-07 01:06:12,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:12,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162546671] [2021-12-07 01:06:12,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:12,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:06:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:06:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:06:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:06:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:06:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:06:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 01:06:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 01:06:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 01:06:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 01:06:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:06:12,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:06:12,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162546671] [2021-12-07 01:06:12,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162546671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:06:12,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:06:12,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-07 01:06:12,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118962860] [2021-12-07 01:06:12,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:06:12,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:06:12,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:06:12,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:06:12,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:06:12,625 INFO L87 Difference]: Start difference. First operand 184447 states and 312572 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-07 01:06:20,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:06:20,009 INFO L93 Difference]: Finished difference Result 185093 states and 320015 transitions. [2021-12-07 01:06:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:06:20,010 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 117 [2021-12-07 01:06:20,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:06:20,570 INFO L225 Difference]: With dead ends: 185093 [2021-12-07 01:06:20,570 INFO L226 Difference]: Without dead ends: 184656 [2021-12-07 01:06:20,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-12-07 01:06:20,629 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 1490 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:06:20,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1696 Invalid, 2229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 01:06:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184656 states. [2021-12-07 01:06:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184656 to 184490. [2021-12-07 01:06:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184490 states, 154047 states have (on average 1.585074684998734) internal successors, (244176), 153946 states have internal predecessors, (244176), 30406 states have call successors, (30406), 34 states have call predecessors, (30406), 36 states have return successors, (38056), 30515 states have call predecessors, (38056), 30404 states have call successors, (38056) [2021-12-07 01:06:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184490 states to 184490 states and 312638 transitions. [2021-12-07 01:06:29,686 INFO L78 Accepts]: Start accepts. Automaton has 184490 states and 312638 transitions. Word has length 117 [2021-12-07 01:06:29,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:06:29,686 INFO L470 AbstractCegarLoop]: Abstraction has 184490 states and 312638 transitions. [2021-12-07 01:06:29,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-07 01:06:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 184490 states and 312638 transitions. [2021-12-07 01:06:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 01:06:29,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:06:29,709 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:06:29,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 01:06:29,709 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:06:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2056297030, now seen corresponding path program 1 times [2021-12-07 01:06:29,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:29,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293171523] [2021-12-07 01:06:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:29,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:06:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:06:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:06:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:06:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:06:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:06:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 01:06:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 01:06:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 01:06:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 01:06:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:06:29,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:06:29,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293171523] [2021-12-07 01:06:29,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293171523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:06:29,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:06:29,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:06:29,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496855591] [2021-12-07 01:06:29,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:06:29,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:06:29,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:06:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:06:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:06:29,769 INFO L87 Difference]: Start difference. First operand 184490 states and 312638 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:06:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:06:40,407 INFO L93 Difference]: Finished difference Result 276872 states and 488006 transitions. [2021-12-07 01:06:40,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:06:40,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2021-12-07 01:06:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:06:41,335 INFO L225 Difference]: With dead ends: 276872 [2021-12-07 01:06:41,335 INFO L226 Difference]: Without dead ends: 276755 [2021-12-07 01:06:41,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-12-07 01:06:41,427 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 1768 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:06:41,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1778 Valid, 1375 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 01:06:41,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276755 states. [2021-12-07 01:06:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276755 to 276272. [2021-12-07 01:06:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276272 states, 230725 states have (on average 1.5854068696500163) internal successors, (365793), 230517 states have internal predecessors, (365793), 45494 states have call successors, (45494), 50 states have call predecessors, (45494), 52 states have return successors, (63958), 45713 states have call predecessors, (63958), 45491 states have call successors, (63958) [2021-12-07 01:06:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276272 states to 276272 states and 475245 transitions. [2021-12-07 01:06:56,188 INFO L78 Accepts]: Start accepts. Automaton has 276272 states and 475245 transitions. Word has length 117 [2021-12-07 01:06:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:06:56,188 INFO L470 AbstractCegarLoop]: Abstraction has 276272 states and 475245 transitions. [2021-12-07 01:06:56,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:06:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 276272 states and 475245 transitions. [2021-12-07 01:06:56,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 01:06:56,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:06:56,229 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:06:56,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 01:06:56,229 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:06:56,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:56,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1815968440, now seen corresponding path program 1 times [2021-12-07 01:06:56,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:56,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168065581] [2021-12-07 01:06:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:56,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:06:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:06:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:06:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:06:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:06:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:06:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 01:06:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 01:06:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 01:06:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 01:06:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 01:06:56,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:06:56,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168065581] [2021-12-07 01:06:56,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168065581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:06:56,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:06:56,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:06:56,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399036696] [2021-12-07 01:06:56,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:06:56,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:06:56,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:06:56,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:06:56,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:06:56,311 INFO L87 Difference]: Start difference. First operand 276272 states and 475245 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:07:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:07,183 INFO L93 Difference]: Finished difference Result 276808 states and 485701 transitions. [2021-12-07 01:07:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:07:07,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2021-12-07 01:07:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:08,180 INFO L225 Difference]: With dead ends: 276808 [2021-12-07 01:07:08,180 INFO L226 Difference]: Without dead ends: 276506 [2021-12-07 01:07:08,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:07:08,277 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 932 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:08,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 784 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:07:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276506 states. [2021-12-07 01:07:22,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276506 to 276342. [2021-12-07 01:07:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276342 states, 230781 states have (on average 1.585368812857211) internal successors, (365873), 230575 states have internal predecessors, (365873), 45491 states have call successors, (45491), 65 states have call predecessors, (45491), 69 states have return successors, (63955), 45710 states have call predecessors, (63955), 45488 states have call successors, (63955) [2021-12-07 01:07:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276342 states to 276342 states and 475319 transitions. [2021-12-07 01:07:24,267 INFO L78 Accepts]: Start accepts. Automaton has 276342 states and 475319 transitions. Word has length 117 [2021-12-07 01:07:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:24,267 INFO L470 AbstractCegarLoop]: Abstraction has 276342 states and 475319 transitions. [2021-12-07 01:07:24,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-07 01:07:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 276342 states and 475319 transitions. [2021-12-07 01:07:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-07 01:07:24,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:24,665 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:24,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 01:07:24,666 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash -803080258, now seen corresponding path program 1 times [2021-12-07 01:07:24,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:24,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809471357] [2021-12-07 01:07:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:24,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:07:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:07:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:07:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:07:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:07:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:07:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 01:07:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:07:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 01:07:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:07:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-07 01:07:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 01:07:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-07 01:07:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-07 01:07:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-07 01:07:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-07 01:07:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 01:07:24,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:24,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809471357] [2021-12-07 01:07:24,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809471357] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:07:24,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862031952] [2021-12-07 01:07:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:24,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:24,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:24,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:24,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:07:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:25,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 01:07:25,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:07:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 01:07:25,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:07:25,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862031952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:07:25,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:07:25,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20] total 30 [2021-12-07 01:07:25,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898995937] [2021-12-07 01:07:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:07:25,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 01:07:25,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 01:07:25,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2021-12-07 01:07:25,442 INFO L87 Difference]: Start difference. First operand 276342 states and 475319 transitions. Second operand has 12 states, 12 states have (on average 10.75) internal successors, (129), 11 states have internal predecessors, (129), 6 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-07 01:07:36,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:36,822 INFO L93 Difference]: Finished difference Result 276741 states and 475866 transitions. [2021-12-07 01:07:36,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:07:36,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 11 states have internal predecessors, (129), 6 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 172 [2021-12-07 01:07:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:37,884 INFO L225 Difference]: With dead ends: 276741 [2021-12-07 01:07:37,884 INFO L226 Difference]: Without dead ends: 276430 [2021-12-07 01:07:37,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2021-12-07 01:07:37,986 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 476 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:37,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 3226 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:07:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276430 states. [2021-12-07 01:07:52,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276430 to 276359. [2021-12-07 01:07:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276359 states, 230794 states have (on average 1.5853358406197735) internal successors, (365886), 230586 states have internal predecessors, (365886), 45494 states have call successors, (45494), 65 states have call predecessors, (45494), 70 states have return successors, (63960), 45716 states have call predecessors, (63960), 45491 states have call successors, (63960) [2021-12-07 01:07:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276359 states to 276359 states and 475340 transitions. [2021-12-07 01:07:53,699 INFO L78 Accepts]: Start accepts. Automaton has 276359 states and 475340 transitions. Word has length 172 [2021-12-07 01:07:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:53,699 INFO L470 AbstractCegarLoop]: Abstraction has 276359 states and 475340 transitions. [2021-12-07 01:07:53,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 11 states have internal predecessors, (129), 6 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-07 01:07:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 276359 states and 475340 transitions. [2021-12-07 01:07:54,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-07 01:07:54,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:54,130 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:54,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 01:07:54,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9a6534-fc62-4397-ba2c-7473affef391/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-07 01:07:54,331 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:54,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash 414850612, now seen corresponding path program 1 times [2021-12-07 01:07:54,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:54,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246955479] [2021-12-07 01:07:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:54,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:07:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:07:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:07:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 01:07:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 01:07:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 01:07:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 01:07:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:07:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 01:07:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:07:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-07 01:07:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 01:07:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-07 01:07:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-07 01:07:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-07 01:07:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-07 01:07:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-07 01:07:54,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:54,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246955479] [2021-12-07 01:07:54,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246955479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:07:54,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:07:54,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:07:54,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528079083] [2021-12-07 01:07:54,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:07:54,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:07:54,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:54,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:07:54,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:07:54,484 INFO L87 Difference]: Start difference. First operand 276359 states and 475340 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-07 01:08:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:08:06,869 INFO L93 Difference]: Finished difference Result 276639 states and 485455 transitions. [2021-12-07 01:08:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 01:08:06,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 173 [2021-12-07 01:08:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:08:06,871 INFO L225 Difference]: With dead ends: 276639 [2021-12-07 01:08:06,871 INFO L226 Difference]: Without dead ends: 0 [2021-12-07 01:08:07,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-12-07 01:08:07,329 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 824 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:08:07,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 1208 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 01:08:07,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-07 01:08:07,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-07 01:08:07,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:08:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-07 01:08:07,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2021-12-07 01:08:07,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:08:07,359 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 01:08:07,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-07 01:08:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-07 01:08:07,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-07 01:08:07,361 INFO L764 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 01:08:07,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-07 01:08:07,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.