./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f1a760a25f6e6d96f820367881f3fbbc32febc8ce03434205938078db6a21524 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:46:23,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:46:23,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:46:23,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:46:23,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:46:23,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:46:23,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:46:23,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:46:23,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:46:23,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:46:23,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:46:23,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:46:23,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:46:23,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:46:23,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:46:23,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:46:23,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:46:23,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:46:23,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:46:23,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:46:23,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:46:23,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:46:23,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:46:23,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:46:23,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:46:23,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:46:23,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:46:23,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:46:23,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:46:23,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:46:23,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:46:23,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:46:23,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:46:23,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:46:23,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:46:23,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:46:23,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:46:23,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:46:23,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:46:23,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:46:23,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:46:23,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 00:46:23,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:46:23,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:46:23,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:46:23,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:46:23,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:46:23,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:46:23,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:46:23,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:46:23,233 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:46:23,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:46:23,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:46:23,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 00:46:23,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:46:23,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:46:23,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:46:23,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:46:23,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:46:23,235 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:46:23,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:46:23,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:46:23,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:46:23,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:46:23,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:46:23,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:46:23,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:46:23,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:46:23,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:46:23,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:46:23,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 00:46:23,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 00:46:23,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:46:23,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:46:23,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:46:23,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1a760a25f6e6d96f820367881f3fbbc32febc8ce03434205938078db6a21524 [2021-12-28 00:46:23,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:46:23,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:46:23,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:46:23,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:46:23,517 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:46:23,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c [2021-12-28 00:46:23,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d0b8766/b5fa0baa4aa84c18bc87798972c4e092/FLAG10e1d78e9 [2021-12-28 00:46:24,004 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:46:24,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c [2021-12-28 00:46:24,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d0b8766/b5fa0baa4aa84c18bc87798972c4e092/FLAG10e1d78e9 [2021-12-28 00:46:24,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d0b8766/b5fa0baa4aa84c18bc87798972c4e092 [2021-12-28 00:46:24,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:46:24,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:46:24,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:46:24,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:46:24,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:46:24,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:24,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f97b57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24, skipping insertion in model container [2021-12-28 00:46:24,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:24,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:46:24,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:46:24,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c[62587,62600] [2021-12-28 00:46:24,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:46:24,778 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:46:24,851 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c[62587,62600] [2021-12-28 00:46:24,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:46:24,874 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:46:24,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24 WrapperNode [2021-12-28 00:46:24,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:46:24,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:46:24,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:46:24,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:46:24,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:24,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:24,953 INFO L137 Inliner]: procedures = 130, calls = 210, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1001 [2021-12-28 00:46:24,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:46:24,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:46:24,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:46:24,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:46:24,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:24,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:24,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:24,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:24,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:24,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:25,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:25,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:46:25,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:46:25,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:46:25,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:46:25,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (1/1) ... [2021-12-28 00:46:25,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:46:25,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:25,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 00:46:25,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 00:46:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-28 00:46:25,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-28 00:46:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-28 00:46:25,105 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-28 00:46:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-28 00:46:25,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-28 00:46:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-28 00:46:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-28 00:46:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-28 00:46:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-28 00:46:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-28 00:46:25,107 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-28 00:46:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-28 00:46:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-28 00:46:25,107 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-28 00:46:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-28 00:46:25,107 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-28 00:46:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-28 00:46:25,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-28 00:46:25,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:46:25,108 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-28 00:46:25,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-28 00:46:25,108 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-28 00:46:25,108 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-28 00:46:25,108 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-28 00:46:25,108 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-28 00:46:25,109 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-28 00:46:25,109 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-28 00:46:25,109 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-28 00:46:25,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-28 00:46:25,109 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-28 00:46:25,109 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-28 00:46:25,109 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-28 00:46:25,109 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-28 00:46:25,109 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-28 00:46:25,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-28 00:46:25,110 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-28 00:46:25,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-28 00:46:25,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 00:46:25,110 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-28 00:46:25,110 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-28 00:46:25,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:46:25,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:46:25,306 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:46:25,308 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:46:25,865 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:46:25,872 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:46:25,872 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 00:46:25,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:46:25 BoogieIcfgContainer [2021-12-28 00:46:25,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:46:25,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:46:25,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:46:25,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:46:25,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:46:24" (1/3) ... [2021-12-28 00:46:25,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ea88d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:46:25, skipping insertion in model container [2021-12-28 00:46:25,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:46:24" (2/3) ... [2021-12-28 00:46:25,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ea88d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:46:25, skipping insertion in model container [2021-12-28 00:46:25,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:46:25" (3/3) ... [2021-12-28 00:46:25,879 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product24.cil.c [2021-12-28 00:46:25,882 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:46:25,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:46:25,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:46:25,927 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 [2021-12-28 00:46:25,927 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:46:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 262 states have (on average 1.5229007633587786) internal successors, (399), 264 states have internal predecessors, (399), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-28 00:46:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 00:46:25,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:25,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:25,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1883857664, now seen corresponding path program 1 times [2021-12-28 00:46:25,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:25,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129856244] [2021-12-28 00:46:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:25,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:46:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:46:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:46:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 00:46:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 00:46:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:46:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:46:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:46:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:46:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:46:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:46:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:46:26,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:26,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129856244] [2021-12-28 00:46:26,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129856244] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:26,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590201962] [2021-12-28 00:46:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:26,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:26,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:26,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 00:46:26,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 00:46:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:26,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 00:46:26,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:46:26,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:46:26,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590201962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:26,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:46:26,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-28 00:46:26,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335739211] [2021-12-28 00:46:26,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:26,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 00:46:26,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:26,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 00:46:26,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:46:26,890 INFO L87 Difference]: Start difference. First operand has 333 states, 262 states have (on average 1.5229007633587786) internal successors, (399), 264 states have internal predecessors, (399), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:26,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:26,932 INFO L93 Difference]: Finished difference Result 507 states and 744 transitions. [2021-12-28 00:46:26,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 00:46:26,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2021-12-28 00:46:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:26,943 INFO L225 Difference]: With dead ends: 507 [2021-12-28 00:46:26,943 INFO L226 Difference]: Without dead ends: 326 [2021-12-28 00:46:26,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:46:26,949 INFO L933 BasicCegarLoop]: 495 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, 495 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 [2021-12-28 00:46:26,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:46:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-28 00:46:26,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-12-28 00:46:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 256 states have (on average 1.515625) internal successors, (388), 257 states have internal predecessors, (388), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-28 00:46:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 487 transitions. [2021-12-28 00:46:27,004 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 487 transitions. Word has length 108 [2021-12-28 00:46:27,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:27,005 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 487 transitions. [2021-12-28 00:46:27,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 487 transitions. [2021-12-28 00:46:27,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 00:46:27,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:27,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:27,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:27,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-28 00:46:27,228 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:27,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:27,228 INFO L85 PathProgramCache]: Analyzing trace with hash -670614014, now seen corresponding path program 1 times [2021-12-28 00:46:27,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:27,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729970377] [2021-12-28 00:46:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:27,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:46:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:46:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:46:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 00:46:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 00:46:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:46:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:46:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:46:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:46:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:46:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:46:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:46:27,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:27,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729970377] [2021-12-28 00:46:27,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729970377] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:27,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262917861] [2021-12-28 00:46:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:27,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:27,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:27,411 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 00:46:27,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 00:46:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:27,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 00:46:27,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:46:27,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:46:27,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262917861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:27,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:46:27,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:46:27,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121462782] [2021-12-28 00:46:27,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:27,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:46:27,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:27,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:46:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:46:27,848 INFO L87 Difference]: Start difference. First operand 326 states and 487 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:27,909 INFO L93 Difference]: Finished difference Result 497 states and 725 transitions. [2021-12-28 00:46:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:46:27,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2021-12-28 00:46:27,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:27,916 INFO L225 Difference]: With dead ends: 497 [2021-12-28 00:46:27,918 INFO L226 Difference]: Without dead ends: 329 [2021-12-28 00:46:27,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:46:27,923 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 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 [2021-12-28 00:46:27,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:46:27,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-12-28 00:46:27,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2021-12-28 00:46:27,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 258 states have (on average 1.5116279069767442) internal successors, (390), 259 states have internal predecessors, (390), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-28 00:46:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 489 transitions. [2021-12-28 00:46:27,954 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 489 transitions. Word has length 109 [2021-12-28 00:46:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:27,955 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 489 transitions. [2021-12-28 00:46:27,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 489 transitions. [2021-12-28 00:46:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 00:46:27,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:27,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:27,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:28,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-28 00:46:28,161 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:28,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:28,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1179541973, now seen corresponding path program 1 times [2021-12-28 00:46:28,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:28,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728520380] [2021-12-28 00:46:28,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:28,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:46:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:46:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:46:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 00:46:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:46:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:46:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:46:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:46:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:46:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:46:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:46:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:46:28,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:28,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728520380] [2021-12-28 00:46:28,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728520380] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:28,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671619719] [2021-12-28 00:46:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:28,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:28,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:28,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 00:46:28,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 00:46:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:46:28,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:46:28,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:46:28,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671619719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:28,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:46:28,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:46:28,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523974471] [2021-12-28 00:46:28,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:28,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:46:28,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:46:28,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:46:28,643 INFO L87 Difference]: Start difference. First operand 328 states and 489 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:28,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:28,673 INFO L93 Difference]: Finished difference Result 691 states and 1045 transitions. [2021-12-28 00:46:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:46:28,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2021-12-28 00:46:28,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:28,677 INFO L225 Difference]: With dead ends: 691 [2021-12-28 00:46:28,677 INFO L226 Difference]: Without dead ends: 390 [2021-12-28 00:46:28,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:46:28,680 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 115 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 938 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 [2021-12-28 00:46:28,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 938 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:46:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-28 00:46:28,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 382. [2021-12-28 00:46:28,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 301 states have (on average 1.5282392026578073) internal successors, (460), 302 states have internal predecessors, (460), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-28 00:46:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 581 transitions. [2021-12-28 00:46:28,720 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 581 transitions. Word has length 118 [2021-12-28 00:46:28,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:28,721 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 581 transitions. [2021-12-28 00:46:28,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 581 transitions. [2021-12-28 00:46:28,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-28 00:46:28,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:28,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:28,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:28,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:28,940 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:28,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash -769525707, now seen corresponding path program 1 times [2021-12-28 00:46:28,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:28,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801234310] [2021-12-28 00:46:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:28,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:46:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:46:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:46:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 00:46:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:46:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:46:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:46:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:46:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:46:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:46:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:46:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:46:29,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:29,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801234310] [2021-12-28 00:46:29,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801234310] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:29,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724874859] [2021-12-28 00:46:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:29,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:29,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:29,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 00:46:29,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 00:46:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 00:46:29,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 00:46:29,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:46:29,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724874859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:29,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:46:29,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-28 00:46:29,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500245453] [2021-12-28 00:46:29,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:29,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:46:29,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:29,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:46:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:46:29,470 INFO L87 Difference]: Start difference. First operand 382 states and 581 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:46:29,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:29,523 INFO L93 Difference]: Finished difference Result 755 states and 1152 transitions. [2021-12-28 00:46:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:46:29,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2021-12-28 00:46:29,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:29,528 INFO L225 Difference]: With dead ends: 755 [2021-12-28 00:46:29,528 INFO L226 Difference]: Without dead ends: 384 [2021-12-28 00:46:29,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:46:29,532 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 133 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1760 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 [2021-12-28 00:46:29,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1760 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:46:29,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-28 00:46:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2021-12-28 00:46:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 302 states have (on average 1.5264900662251655) internal successors, (461), 304 states have internal predecessors, (461), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2021-12-28 00:46:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 584 transitions. [2021-12-28 00:46:29,567 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 584 transitions. Word has length 119 [2021-12-28 00:46:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:29,567 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 584 transitions. [2021-12-28 00:46:29,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:46:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 584 transitions. [2021-12-28 00:46:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 00:46:29,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:29,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:29,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:29,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:29,771 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:29,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash -682075489, now seen corresponding path program 1 times [2021-12-28 00:46:29,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:29,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130012337] [2021-12-28 00:46:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:29,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 00:46:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 00:46:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:46:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:46:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:46:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:46:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:46:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:46:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:46:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:46:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:46:29,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:29,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130012337] [2021-12-28 00:46:29,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130012337] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:29,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133411123] [2021-12-28 00:46:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:29,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:29,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:29,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 00:46:29,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 00:46:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 00:46:30,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 00:46:30,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:46:30,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133411123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:30,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:46:30,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-28 00:46:30,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589922536] [2021-12-28 00:46:30,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:30,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:46:30,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:30,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:46:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:46:30,284 INFO L87 Difference]: Start difference. First operand 384 states and 584 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:46:30,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:30,353 INFO L93 Difference]: Finished difference Result 757 states and 1157 transitions. [2021-12-28 00:46:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:46:30,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2021-12-28 00:46:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:30,358 INFO L225 Difference]: With dead ends: 757 [2021-12-28 00:46:30,358 INFO L226 Difference]: Without dead ends: 386 [2021-12-28 00:46:30,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-28 00:46:30,360 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 132 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1749 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 [2021-12-28 00:46:30,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1749 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:46:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-12-28 00:46:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-12-28 00:46:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 303 states have (on average 1.5247524752475248) internal successors, (462), 306 states have internal predecessors, (462), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-28 00:46:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 590 transitions. [2021-12-28 00:46:30,382 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 590 transitions. Word has length 120 [2021-12-28 00:46:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:30,382 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 590 transitions. [2021-12-28 00:46:30,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:46:30,383 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 590 transitions. [2021-12-28 00:46:30,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-28 00:46:30,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:30,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:30,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:30,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:30,603 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:30,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:30,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1727763941, now seen corresponding path program 1 times [2021-12-28 00:46:30,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:30,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937394475] [2021-12-28 00:46:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:30,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 00:46:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:46:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 00:46:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:46:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:46:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:46:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:46:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:46:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:46:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:46:30,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:30,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937394475] [2021-12-28 00:46:30,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937394475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:30,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:30,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:46:30,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820215159] [2021-12-28 00:46:30,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:30,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:46:30,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:30,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:46:30,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:46:30,731 INFO L87 Difference]: Start difference. First operand 386 states and 590 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:46:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:32,178 INFO L93 Difference]: Finished difference Result 928 states and 1427 transitions. [2021-12-28 00:46:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:46:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2021-12-28 00:46:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:32,181 INFO L225 Difference]: With dead ends: 928 [2021-12-28 00:46:32,181 INFO L226 Difference]: Without dead ends: 565 [2021-12-28 00:46:32,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:46:32,183 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1178 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:32,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1195 Valid, 1477 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 00:46:32,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-12-28 00:46:32,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 386. [2021-12-28 00:46:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 303 states have (on average 1.5247524752475248) internal successors, (462), 306 states have internal predecessors, (462), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2021-12-28 00:46:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 589 transitions. [2021-12-28 00:46:32,202 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 589 transitions. Word has length 121 [2021-12-28 00:46:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:32,202 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 589 transitions. [2021-12-28 00:46:32,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:46:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 589 transitions. [2021-12-28 00:46:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 00:46:32,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:32,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:32,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 00:46:32,205 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:32,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash -9401821, now seen corresponding path program 2 times [2021-12-28 00:46:32,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:32,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593143715] [2021-12-28 00:46:32,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:32,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 00:46:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:46:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:46:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:46:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:46:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:46:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:46:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:46:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:46:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:46:32,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:32,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593143715] [2021-12-28 00:46:32,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593143715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:32,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:32,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:46:32,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712906669] [2021-12-28 00:46:32,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:32,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:46:32,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:32,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:46:32,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:46:32,297 INFO L87 Difference]: Start difference. First operand 386 states and 589 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:46:33,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:33,700 INFO L93 Difference]: Finished difference Result 930 states and 1430 transitions. [2021-12-28 00:46:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:46:33,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2021-12-28 00:46:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:33,703 INFO L225 Difference]: With dead ends: 930 [2021-12-28 00:46:33,703 INFO L226 Difference]: Without dead ends: 567 [2021-12-28 00:46:33,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:46:33,705 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 1172 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:33,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 1480 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 00:46:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-12-28 00:46:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 388. [2021-12-28 00:46:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 304 states have (on average 1.5230263157894737) internal successors, (463), 308 states have internal predecessors, (463), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2021-12-28 00:46:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 592 transitions. [2021-12-28 00:46:33,729 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 592 transitions. Word has length 122 [2021-12-28 00:46:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:33,730 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 592 transitions. [2021-12-28 00:46:33,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:46:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 592 transitions. [2021-12-28 00:46:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 00:46:33,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:33,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:33,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 00:46:33,733 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1892957856, now seen corresponding path program 1 times [2021-12-28 00:46:33,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:33,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016566475] [2021-12-28 00:46:33,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:33,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:46:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:46:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:46:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:46:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:46:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:46:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:46:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:46:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:46:33,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:33,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016566475] [2021-12-28 00:46:33,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016566475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:33,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:33,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:46:33,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880280577] [2021-12-28 00:46:33,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:33,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:46:33,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:33,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:46:33,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:46:33,852 INFO L87 Difference]: Start difference. First operand 388 states and 592 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 00:46:35,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:35,787 INFO L93 Difference]: Finished difference Result 928 states and 1425 transitions. [2021-12-28 00:46:35,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:46:35,787 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2021-12-28 00:46:35,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:35,790 INFO L225 Difference]: With dead ends: 928 [2021-12-28 00:46:35,790 INFO L226 Difference]: Without dead ends: 567 [2021-12-28 00:46:35,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:46:35,792 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1292 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 3875 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 4390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 3875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:35,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 1799 Invalid, 4390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 3875 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 00:46:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-12-28 00:46:35,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 388. [2021-12-28 00:46:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 304 states have (on average 1.5230263157894737) internal successors, (463), 308 states have internal predecessors, (463), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-28 00:46:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 591 transitions. [2021-12-28 00:46:35,809 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 591 transitions. Word has length 123 [2021-12-28 00:46:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:35,809 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 591 transitions. [2021-12-28 00:46:35,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 00:46:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 591 transitions. [2021-12-28 00:46:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-28 00:46:35,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:35,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:35,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 00:46:35,811 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:35,811 INFO L85 PathProgramCache]: Analyzing trace with hash -998290720, now seen corresponding path program 2 times [2021-12-28 00:46:35,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:35,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213512683] [2021-12-28 00:46:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:35,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:46:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:46:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:46:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:46:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:46:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:46:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:46:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:46:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:46:35,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:35,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213512683] [2021-12-28 00:46:35,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213512683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:35,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:35,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:46:35,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775126105] [2021-12-28 00:46:35,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:35,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:46:35,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:35,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:46:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:46:35,948 INFO L87 Difference]: Start difference. First operand 388 states and 591 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 00:46:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:37,962 INFO L93 Difference]: Finished difference Result 930 states and 1431 transitions. [2021-12-28 00:46:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:46:37,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 124 [2021-12-28 00:46:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:37,965 INFO L225 Difference]: With dead ends: 930 [2021-12-28 00:46:37,966 INFO L226 Difference]: Without dead ends: 569 [2021-12-28 00:46:37,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:46:37,970 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1288 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 3894 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 4404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 3894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:37,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1288 Valid, 1798 Invalid, 4404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 3894 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-28 00:46:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-12-28 00:46:37,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 390. [2021-12-28 00:46:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 305 states have (on average 1.521311475409836) internal successors, (464), 310 states have internal predecessors, (464), 61 states have call successors, (61), 19 states have call predecessors, (61), 23 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2021-12-28 00:46:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 597 transitions. [2021-12-28 00:46:37,988 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 597 transitions. Word has length 124 [2021-12-28 00:46:37,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:37,989 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 597 transitions. [2021-12-28 00:46:37,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 00:46:37,990 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 597 transitions. [2021-12-28 00:46:37,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-28 00:46:37,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:37,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:37,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 00:46:37,992 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:37,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:37,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1678008475, now seen corresponding path program 1 times [2021-12-28 00:46:37,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:37,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653022721] [2021-12-28 00:46:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:37,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:46:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:46:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:46:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:46:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:46:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:46:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:46:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:46:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-28 00:46:38,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:38,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653022721] [2021-12-28 00:46:38,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653022721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:46:38,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147389542] [2021-12-28 00:46:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:38,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:38,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:46:38,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 00:46:38,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 00:46:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:38,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:46:38,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:46:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:38,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 00:46:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:38,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147389542] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 00:46:38,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 00:46:38,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-28 00:46:38,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269839110] [2021-12-28 00:46:38,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 00:46:38,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 00:46:38,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:38,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 00:46:38,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:46:38,668 INFO L87 Difference]: Start difference. First operand 390 states and 597 transitions. Second operand has 15 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 4 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-28 00:46:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:41,542 INFO L93 Difference]: Finished difference Result 1659 states and 2739 transitions. [2021-12-28 00:46:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 00:46:41,542 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 4 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 125 [2021-12-28 00:46:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:41,550 INFO L225 Difference]: With dead ends: 1659 [2021-12-28 00:46:41,551 INFO L226 Difference]: Without dead ends: 1300 [2021-12-28 00:46:41,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-28 00:46:41,554 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 3589 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 5270 mSolverCounterSat, 1363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 6633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1363 IncrementalHoareTripleChecker+Valid, 5270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:41,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 3317 Invalid, 6633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1363 Valid, 5270 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-28 00:46:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-12-28 00:46:41,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 743. [2021-12-28 00:46:41,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 594 states have (on average 1.5740740740740742) internal successors, (935), 599 states have internal predecessors, (935), 125 states have call successors, (125), 19 states have call predecessors, (125), 23 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2021-12-28 00:46:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1206 transitions. [2021-12-28 00:46:41,608 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1206 transitions. Word has length 125 [2021-12-28 00:46:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:41,608 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 1206 transitions. [2021-12-28 00:46:41,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 4 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-28 00:46:41,608 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1206 transitions. [2021-12-28 00:46:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-28 00:46:41,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:41,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:41,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 00:46:41,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:46:41,830 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:41,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash 49647564, now seen corresponding path program 1 times [2021-12-28 00:46:41,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:41,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497707854] [2021-12-28 00:46:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:41,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:46:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:46:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:46:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:46:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:46:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:46:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:46:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:46:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:41,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:41,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497707854] [2021-12-28 00:46:41,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497707854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:41,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:41,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:41,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942343184] [2021-12-28 00:46:41,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:41,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:41,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:41,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:41,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:41,932 INFO L87 Difference]: Start difference. First operand 743 states and 1206 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:42,991 INFO L93 Difference]: Finished difference Result 1920 states and 3182 transitions. [2021-12-28 00:46:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:42,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2021-12-28 00:46:42,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:42,996 INFO L225 Difference]: With dead ends: 1920 [2021-12-28 00:46:42,996 INFO L226 Difference]: Without dead ends: 1255 [2021-12-28 00:46:42,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:46:42,998 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1168 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:42,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 1331 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:43,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-12-28 00:46:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1068. [2021-12-28 00:46:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 855 states have (on average 1.590643274853801) internal successors, (1360), 860 states have internal predecessors, (1360), 189 states have call successors, (189), 19 states have call predecessors, (189), 23 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2021-12-28 00:46:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1769 transitions. [2021-12-28 00:46:43,057 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1769 transitions. Word has length 128 [2021-12-28 00:46:43,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:43,057 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1769 transitions. [2021-12-28 00:46:43,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1769 transitions. [2021-12-28 00:46:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-28 00:46:43,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:43,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:43,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 00:46:43,062 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:43,062 INFO L85 PathProgramCache]: Analyzing trace with hash -730772503, now seen corresponding path program 1 times [2021-12-28 00:46:43,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:43,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955358075] [2021-12-28 00:46:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:43,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:46:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:46:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:46:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:46:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:46:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:46:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:46:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:46:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:43,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955358075] [2021-12-28 00:46:43,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955358075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:43,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:43,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:43,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883502222] [2021-12-28 00:46:43,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:43,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:43,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:43,126 INFO L87 Difference]: Start difference. First operand 1068 states and 1769 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:44,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:44,193 INFO L93 Difference]: Finished difference Result 2725 states and 4566 transitions. [2021-12-28 00:46:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:44,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2021-12-28 00:46:44,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:44,201 INFO L225 Difference]: With dead ends: 2725 [2021-12-28 00:46:44,201 INFO L226 Difference]: Without dead ends: 1788 [2021-12-28 00:46:44,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:46:44,205 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1166 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:44,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 1308 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2021-12-28 00:46:44,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1601. [2021-12-28 00:46:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1293 states have (on average 1.5978344934261408) internal successors, (2066), 1298 states have internal predecessors, (2066), 284 states have call successors, (284), 19 states have call predecessors, (284), 23 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2021-12-28 00:46:44,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2665 transitions. [2021-12-28 00:46:44,291 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2665 transitions. Word has length 129 [2021-12-28 00:46:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:44,291 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2665 transitions. [2021-12-28 00:46:44,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2665 transitions. [2021-12-28 00:46:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 00:46:44,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:44,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:44,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 00:46:44,298 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:44,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:44,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1030544222, now seen corresponding path program 1 times [2021-12-28 00:46:44,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:44,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626324158] [2021-12-28 00:46:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:44,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:46:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:46:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:46:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:46:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:46:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:46:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:46:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:46:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:44,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:44,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626324158] [2021-12-28 00:46:44,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626324158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:44,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:44,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:44,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290857857] [2021-12-28 00:46:44,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:44,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:44,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:44,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:44,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:44,380 INFO L87 Difference]: Start difference. First operand 1601 states and 2665 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:45,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:45,501 INFO L93 Difference]: Finished difference Result 3932 states and 6652 transitions. [2021-12-28 00:46:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:45,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-28 00:46:45,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:45,512 INFO L225 Difference]: With dead ends: 3932 [2021-12-28 00:46:45,512 INFO L226 Difference]: Without dead ends: 2597 [2021-12-28 00:46:45,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:46:45,516 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 1164 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:45,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 1308 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:45,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-12-28 00:46:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2410. [2021-12-28 00:46:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 1979 states have (on average 1.6033350176856997) internal successors, (3173), 1984 states have internal predecessors, (3173), 407 states have call successors, (407), 19 states have call predecessors, (407), 23 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2021-12-28 00:46:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 4034 transitions. [2021-12-28 00:46:45,659 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 4034 transitions. Word has length 130 [2021-12-28 00:46:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:45,660 INFO L470 AbstractCegarLoop]: Abstraction has 2410 states and 4034 transitions. [2021-12-28 00:46:45,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 4034 transitions. [2021-12-28 00:46:45,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-28 00:46:45,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:45,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:45,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 00:46:45,668 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:45,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:45,668 INFO L85 PathProgramCache]: Analyzing trace with hash 19997000, now seen corresponding path program 1 times [2021-12-28 00:46:45,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:45,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771555032] [2021-12-28 00:46:45,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:45,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:46:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:46:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:46:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:46:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:46:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:46:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:46:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:46:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:45,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:45,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771555032] [2021-12-28 00:46:45,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771555032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:45,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:45,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:45,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116182238] [2021-12-28 00:46:45,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:45,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:45,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:45,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:45,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:45,746 INFO L87 Difference]: Start difference. First operand 2410 states and 4034 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:46,951 INFO L93 Difference]: Finished difference Result 5816 states and 9912 transitions. [2021-12-28 00:46:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:46,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2021-12-28 00:46:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:46,966 INFO L225 Difference]: With dead ends: 5816 [2021-12-28 00:46:46,966 INFO L226 Difference]: Without dead ends: 3891 [2021-12-28 00:46:46,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:46:46,971 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 1162 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:46,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 1305 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:46:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2021-12-28 00:46:47,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3704. [2021-12-28 00:46:47,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3094 states have (on average 1.6066580478345185) internal successors, (4971), 3099 states have internal predecessors, (4971), 586 states have call successors, (586), 19 states have call predecessors, (586), 23 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2021-12-28 00:46:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 6216 transitions. [2021-12-28 00:46:47,147 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 6216 transitions. Word has length 131 [2021-12-28 00:46:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:47,148 INFO L470 AbstractCegarLoop]: Abstraction has 3704 states and 6216 transitions. [2021-12-28 00:46:47,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:47,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 6216 transitions. [2021-12-28 00:46:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-28 00:46:47,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:47,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:47,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 00:46:47,157 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2133070594, now seen corresponding path program 1 times [2021-12-28 00:46:47,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:47,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218199367] [2021-12-28 00:46:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:47,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:46:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:46:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:46:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:46:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:46:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:46:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 00:46:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:46:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:47,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:47,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218199367] [2021-12-28 00:46:47,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218199367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:47,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:47,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:47,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478106601] [2021-12-28 00:46:47,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:47,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:47,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:47,237 INFO L87 Difference]: Start difference. First operand 3704 states and 6216 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:48,514 INFO L93 Difference]: Finished difference Result 8919 states and 15276 transitions. [2021-12-28 00:46:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:48,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-12-28 00:46:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:48,537 INFO L225 Difference]: With dead ends: 8919 [2021-12-28 00:46:48,537 INFO L226 Difference]: Without dead ends: 6032 [2021-12-28 00:46:48,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:46:48,545 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 1160 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:48,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 1326 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:48,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6032 states. [2021-12-28 00:46:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6032 to 5845. [2021-12-28 00:46:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 4859 states have (on average 1.6005350895245936) internal successors, (7777), 4864 states have internal predecessors, (7777), 962 states have call successors, (962), 19 states have call predecessors, (962), 23 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2021-12-28 00:46:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 9818 transitions. [2021-12-28 00:46:48,848 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 9818 transitions. Word has length 132 [2021-12-28 00:46:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:48,849 INFO L470 AbstractCegarLoop]: Abstraction has 5845 states and 9818 transitions. [2021-12-28 00:46:48,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 9818 transitions. [2021-12-28 00:46:48,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 00:46:48,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:48,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:48,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 00:46:48,864 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:48,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1798701476, now seen corresponding path program 1 times [2021-12-28 00:46:48,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:48,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727238850] [2021-12-28 00:46:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:48,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:46:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:46:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:46:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:46:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:46:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:46:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:46:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 00:46:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:48,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:48,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727238850] [2021-12-28 00:46:48,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727238850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:48,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:48,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:48,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648714561] [2021-12-28 00:46:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:48,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:48,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:48,940 INFO L87 Difference]: Start difference. First operand 5845 states and 9818 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:50,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:50,346 INFO L93 Difference]: Finished difference Result 14536 states and 24889 transitions. [2021-12-28 00:46:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:50,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-12-28 00:46:50,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:50,398 INFO L225 Difference]: With dead ends: 14536 [2021-12-28 00:46:50,398 INFO L226 Difference]: Without dead ends: 9910 [2021-12-28 00:46:50,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:46:50,413 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 1158 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:50,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1314 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9910 states. [2021-12-28 00:46:50,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9910 to 9723. [2021-12-28 00:46:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9723 states, 8131 states have (on average 1.5983273890050425) internal successors, (12996), 8136 states have internal predecessors, (12996), 1568 states have call successors, (1568), 19 states have call predecessors, (1568), 23 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2021-12-28 00:46:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9723 states to 9723 states and 16327 transitions. [2021-12-28 00:46:50,948 INFO L78 Accepts]: Start accepts. Automaton has 9723 states and 16327 transitions. Word has length 133 [2021-12-28 00:46:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:50,948 INFO L470 AbstractCegarLoop]: Abstraction has 9723 states and 16327 transitions. [2021-12-28 00:46:50,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 9723 states and 16327 transitions. [2021-12-28 00:46:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-28 00:46:50,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:50,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:50,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 00:46:50,966 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:50,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:50,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1806206924, now seen corresponding path program 1 times [2021-12-28 00:46:50,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:50,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433436929] [2021-12-28 00:46:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:50,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:46:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:46:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:46:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:46:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:46:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:46:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:46:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 00:46:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:51,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:51,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433436929] [2021-12-28 00:46:51,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433436929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:51,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:51,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:51,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130576828] [2021-12-28 00:46:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:51,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:51,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:51,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:51,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:51,054 INFO L87 Difference]: Start difference. First operand 9723 states and 16327 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:52,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:52,775 INFO L93 Difference]: Finished difference Result 25245 states and 43170 transitions. [2021-12-28 00:46:52,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:52,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-12-28 00:46:52,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:52,819 INFO L225 Difference]: With dead ends: 25245 [2021-12-28 00:46:52,819 INFO L226 Difference]: Without dead ends: 17223 [2021-12-28 00:46:52,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:46:52,840 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 1156 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:52,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1357 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17223 states. [2021-12-28 00:46:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17223 to 17036. [2021-12-28 00:46:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17036 states, 14241 states have (on average 1.5899164384523559) internal successors, (22642), 14246 states have internal predecessors, (22642), 2771 states have call successors, (2771), 19 states have call predecessors, (2771), 23 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2021-12-28 00:46:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17036 states to 17036 states and 28523 transitions. [2021-12-28 00:46:53,659 INFO L78 Accepts]: Start accepts. Automaton has 17036 states and 28523 transitions. Word has length 134 [2021-12-28 00:46:53,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:53,659 INFO L470 AbstractCegarLoop]: Abstraction has 17036 states and 28523 transitions. [2021-12-28 00:46:53,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:53,660 INFO L276 IsEmpty]: Start isEmpty. Operand 17036 states and 28523 transitions. [2021-12-28 00:46:53,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 00:46:53,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:53,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:53,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 00:46:53,687 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:53,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:53,687 INFO L85 PathProgramCache]: Analyzing trace with hash -990252573, now seen corresponding path program 1 times [2021-12-28 00:46:53,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:53,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888315296] [2021-12-28 00:46:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:53,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:46:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:46:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:46:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:46:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:46:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:46:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:46:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 00:46:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:53,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:53,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888315296] [2021-12-28 00:46:53,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888315296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:53,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:53,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:53,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687892659] [2021-12-28 00:46:53,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:53,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:53,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:53,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:53,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:53,770 INFO L87 Difference]: Start difference. First operand 17036 states and 28523 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:46:56,012 INFO L93 Difference]: Finished difference Result 45221 states and 77183 transitions. [2021-12-28 00:46:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:46:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2021-12-28 00:46:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:46:56,111 INFO L225 Difference]: With dead ends: 45221 [2021-12-28 00:46:56,111 INFO L226 Difference]: Without dead ends: 30563 [2021-12-28 00:46:56,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:46:56,145 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 1153 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:46:56,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 1313 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:46:56,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30563 states. [2021-12-28 00:46:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30563 to 30376. [2021-12-28 00:46:57,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30376 states, 25542 states have (on average 1.5858194346566439) internal successors, (40505), 25547 states have internal predecessors, (40505), 4810 states have call successors, (4810), 19 states have call predecessors, (4810), 23 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2021-12-28 00:46:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30376 states to 30376 states and 50738 transitions. [2021-12-28 00:46:57,653 INFO L78 Accepts]: Start accepts. Automaton has 30376 states and 50738 transitions. Word has length 135 [2021-12-28 00:46:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:46:57,653 INFO L470 AbstractCegarLoop]: Abstraction has 30376 states and 50738 transitions. [2021-12-28 00:46:57,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:46:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 30376 states and 50738 transitions. [2021-12-28 00:46:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-28 00:46:57,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:46:57,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:46:57,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 00:46:57,679 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:46:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:46:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash -420438670, now seen corresponding path program 1 times [2021-12-28 00:46:57,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:46:57,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065082481] [2021-12-28 00:46:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:46:57,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:46:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:46:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:46:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:46:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:46:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:46:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:46:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:46:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:46:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:46:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:46:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:46:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:46:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:46:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 00:46:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:46:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:46:57,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:46:57,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065082481] [2021-12-28 00:46:57,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065082481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:46:57,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:46:57,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:46:57,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123922369] [2021-12-28 00:46:57,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:46:57,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:46:57,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:46:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:46:57,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:46:57,755 INFO L87 Difference]: Start difference. First operand 30376 states and 50738 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:47:01,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:01,220 INFO L93 Difference]: Finished difference Result 82958 states and 140707 transitions. [2021-12-28 00:47:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:47:01,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2021-12-28 00:47:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:01,431 INFO L225 Difference]: With dead ends: 82958 [2021-12-28 00:47:01,432 INFO L226 Difference]: Without dead ends: 55772 [2021-12-28 00:47:01,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:47:01,572 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 1151 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:47:01,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 1317 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:47:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55772 states. [2021-12-28 00:47:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55772 to 55585. [2021-12-28 00:47:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55585 states, 47036 states have (on average 1.5804064971511183) internal successors, (74336), 47041 states have internal predecessors, (74336), 8525 states have call successors, (8525), 19 states have call predecessors, (8525), 23 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2021-12-28 00:47:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55585 states to 55585 states and 92531 transitions. [2021-12-28 00:47:04,555 INFO L78 Accepts]: Start accepts. Automaton has 55585 states and 92531 transitions. Word has length 136 [2021-12-28 00:47:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:47:04,556 INFO L470 AbstractCegarLoop]: Abstraction has 55585 states and 92531 transitions. [2021-12-28 00:47:04,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:47:04,556 INFO L276 IsEmpty]: Start isEmpty. Operand 55585 states and 92531 transitions. [2021-12-28 00:47:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-28 00:47:04,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:04,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:47:04,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 00:47:04,588 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash -472446621, now seen corresponding path program 1 times [2021-12-28 00:47:04,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:04,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821120015] [2021-12-28 00:47:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:04,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:47:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:47:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:47:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:47:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:47:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:47:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:47:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:47:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:47:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:47:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 00:47:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:47:04,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:04,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821120015] [2021-12-28 00:47:04,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821120015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:04,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:47:04,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:47:04,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18444868] [2021-12-28 00:47:04,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:04,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:47:04,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:04,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:47:04,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:47:04,658 INFO L87 Difference]: Start difference. First operand 55585 states and 92531 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:47:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:09,723 INFO L93 Difference]: Finished difference Result 104014 states and 176693 transitions. [2021-12-28 00:47:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:47:09,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2021-12-28 00:47:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:10,051 INFO L225 Difference]: With dead ends: 104014 [2021-12-28 00:47:10,051 INFO L226 Difference]: Without dead ends: 103846 [2021-12-28 00:47:10,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:47:10,098 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 1149 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:47:10,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 1314 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 00:47:10,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103846 states. [2021-12-28 00:47:15,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103846 to 103659. [2021-12-28 00:47:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103659 states, 88311 states have (on average 1.5736091766597593) internal successors, (138967), 88316 states have internal predecessors, (138967), 15324 states have call successors, (15324), 19 states have call predecessors, (15324), 23 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2021-12-28 00:47:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103659 states to 103659 states and 171806 transitions. [2021-12-28 00:47:15,555 INFO L78 Accepts]: Start accepts. Automaton has 103659 states and 171806 transitions. Word has length 137 [2021-12-28 00:47:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:47:15,556 INFO L470 AbstractCegarLoop]: Abstraction has 103659 states and 171806 transitions. [2021-12-28 00:47:15,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:47:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 103659 states and 171806 transitions. [2021-12-28 00:47:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-28 00:47:15,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:47:15,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:47:15,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 00:47:15,592 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:47:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:47:15,593 INFO L85 PathProgramCache]: Analyzing trace with hash -216220237, now seen corresponding path program 1 times [2021-12-28 00:47:15,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:47:15,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387027318] [2021-12-28 00:47:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:47:15,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:47:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:47:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:47:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:47:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:47:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:47:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:47:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:47:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:47:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:47:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:47:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:47:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:47:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:47:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 00:47:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:47:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:47:15,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:47:15,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387027318] [2021-12-28 00:47:15,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387027318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:47:15,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:47:15,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:47:15,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687214304] [2021-12-28 00:47:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:47:15,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:47:15,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:47:15,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:47:15,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:47:15,680 INFO L87 Difference]: Start difference. First operand 103659 states and 171806 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:47:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:47:20,935 INFO L93 Difference]: Finished difference Result 103998 states and 175582 transitions. [2021-12-28 00:47:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 00:47:20,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2021-12-28 00:47:20,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:47:21,487 INFO L225 Difference]: With dead ends: 103998 [2021-12-28 00:47:21,487 INFO L226 Difference]: Without dead ends: 103838 [2021-12-28 00:47:21,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-12-28 00:47:21,525 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1138 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:47:21,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 1605 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:47:21,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103838 states.