./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_spec0_product37.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 9dc54d5213c4407313cf4404e06f4e3ced3af047edaa52f6d33441570abdeda7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:40:42,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:40:42,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:40:42,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:40:42,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:40:42,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:40:42,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:40:42,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:40:42,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:40:42,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:40:42,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:40:42,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:40:42,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:40:42,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:40:42,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:40:42,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:40:42,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:40:42,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:40:42,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:40:42,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:40:42,238 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:40:42,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:40:42,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:40:42,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:40:42,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:40:42,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:40:42,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:40:42,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:40:42,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:40:42,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:40:42,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:40:42,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:40:42,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:40:42,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:40:42,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:40:42,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:40:42,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:40:42,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:40:42,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:40:42,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:40:42,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:40:42,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:40:42,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:40:42,270 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:40:42,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:40:42,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:40:42,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:40:42,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:40:42,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:40:42,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:40:42,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:40:42,272 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:40:42,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:40:42,272 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:40:42,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:40:42,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:40:42,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:40:42,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:40:42,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:40:42,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:40:42,273 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:40:42,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:40:42,273 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:40:42,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:40:42,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:40:42,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:40:42,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:40:42,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:40:42,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:40:42,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:40:42,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:40:42,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:40:42,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:40:42,275 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:40:42,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:40:42,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:40:42,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9dc54d5213c4407313cf4404e06f4e3ced3af047edaa52f6d33441570abdeda7 [2022-07-13 17:40:42,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:40:42,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:40:42,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:40:42,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:40:42,460 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:40:42,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c [2022-07-13 17:40:42,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf479881/9eba57390b7d4b43896620920b01442d/FLAG947d4a8bb [2022-07-13 17:40:42,895 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:40:42,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product37.cil.c [2022-07-13 17:40:42,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf479881/9eba57390b7d4b43896620920b01442d/FLAG947d4a8bb [2022-07-13 17:40:42,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf479881/9eba57390b7d4b43896620920b01442d [2022-07-13 17:40:42,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:40:42,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:40:42,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:40:42,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:40:42,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:40:42,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:40:42" (1/1) ... [2022-07-13 17:40:42,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7316c6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:42, skipping insertion in model container [2022-07-13 17:40:42,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:40:42" (1/1) ... [2022-07-13 17:40:42,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:40:42,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:40:43,101 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_spec0_product37.cil.c[1542,1555] [2022-07-13 17:40:43,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:40:43,385 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:40:43,393 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_spec0_product37.cil.c[1542,1555] [2022-07-13 17:40:43,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:40:43,489 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:40:43,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43 WrapperNode [2022-07-13 17:40:43,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:40:43,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:40:43,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:40:43,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:40:43,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (1/1) ... [2022-07-13 17:40:43,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (1/1) ... [2022-07-13 17:40:43,582 INFO L137 Inliner]: procedures = 124, calls = 186, calls flagged for inlining = 51, calls inlined = 46, statements flattened = 829 [2022-07-13 17:40:43,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:40:43,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:40:43,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:40:43,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:40:43,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (1/1) ... [2022-07-13 17:40:43,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (1/1) ... [2022-07-13 17:40:43,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (1/1) ... [2022-07-13 17:40:43,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (1/1) ... [2022-07-13 17:40:43,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (1/1) ... [2022-07-13 17:40:43,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (1/1) ... [2022-07-13 17:40:43,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (1/1) ... [2022-07-13 17:40:43,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:40:43,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:40:43,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:40:43,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:40:43,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (1/1) ... [2022-07-13 17:40:43,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:40:43,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:40:43,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 17:40:43,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 17:40:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-13 17:40:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-13 17:40:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-13 17:40:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-13 17:40:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-13 17:40:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-13 17:40:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-13 17:40:43,727 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-13 17:40:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-13 17:40:43,727 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-13 17:40:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-13 17:40:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-13 17:40:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-13 17:40:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-07-13 17:40:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-07-13 17:40:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-13 17:40:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-13 17:40:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:40:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-13 17:40:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-13 17:40:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-13 17:40:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-13 17:40:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-13 17:40:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-13 17:40:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-13 17:40:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-13 17:40:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-13 17:40:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-13 17:40:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-13 17:40:43,730 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-13 17:40:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:40:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-13 17:40:43,730 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-13 17:40:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:40:43,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:40:43,868 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:40:43,869 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:40:44,417 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:40:44,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:40:44,429 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:40:44,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:40:44 BoogieIcfgContainer [2022-07-13 17:40:44,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:40:44,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:40:44,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:40:44,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:40:44,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:40:42" (1/3) ... [2022-07-13 17:40:44,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ebdb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:40:44, skipping insertion in model container [2022-07-13 17:40:44,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:40:43" (2/3) ... [2022-07-13 17:40:44,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ebdb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:40:44, skipping insertion in model container [2022-07-13 17:40:44,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:40:44" (3/3) ... [2022-07-13 17:40:44,440 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product37.cil.c [2022-07-13 17:40:44,450 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:40:44,451 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:40:44,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:40:44,509 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@68767431, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69d614c3 [2022-07-13 17:40:44,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:40:44,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 201 states have (on average 1.5223880597014925) internal successors, (306), 203 states have internal predecessors, (306), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-13 17:40:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 17:40:44,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:44,545 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-13 17:40:44,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:44,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:44,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1324119158, now seen corresponding path program 1 times [2022-07-13 17:40:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630296060] [2022-07-13 17:40:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:44,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:40:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:40:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:40:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:40:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:40:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:40:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:40:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:40:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:40:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 17:40:44,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:44,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630296060] [2022-07-13 17:40:44,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630296060] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:40:44,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512591955] [2022-07-13 17:40:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:44,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:40:44,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:40:44,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:40:44,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:40:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 17:40:45,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:40:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 17:40:45,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:40:45,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512591955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:45,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:40:45,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-13 17:40:45,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324912397] [2022-07-13 17:40:45,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:45,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:40:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:45,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:40:45,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:40:45,184 INFO L87 Difference]: Start difference. First operand has 258 states, 201 states have (on average 1.5223880597014925) internal successors, (306), 203 states have internal predecessors, (306), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:40:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:45,230 INFO L93 Difference]: Finished difference Result 357 states and 518 transitions. [2022-07-13 17:40:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:40:45,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 97 [2022-07-13 17:40:45,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:45,250 INFO L225 Difference]: With dead ends: 357 [2022-07-13 17:40:45,250 INFO L226 Difference]: Without dead ends: 251 [2022-07-13 17:40:45,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:40:45,264 INFO L413 NwaCegarLoop]: 382 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, 382 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 [2022-07-13 17:40:45,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:40:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-13 17:40:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-07-13 17:40:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 195 states have (on average 1.5128205128205128) internal successors, (295), 196 states have internal predecessors, (295), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-13 17:40:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 374 transitions. [2022-07-13 17:40:45,320 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 374 transitions. Word has length 97 [2022-07-13 17:40:45,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:45,324 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 374 transitions. [2022-07-13 17:40:45,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:40:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 374 transitions. [2022-07-13 17:40:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 17:40:45,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:45,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-13 17:40:45,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 17:40:45,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 17:40:45,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash 916126259, now seen corresponding path program 1 times [2022-07-13 17:40:45,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:45,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878433042] [2022-07-13 17:40:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:45,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:40:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:40:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:40:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:40:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:40:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:40:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:40:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:40:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:40:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 17:40:45,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:45,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878433042] [2022-07-13 17:40:45,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878433042] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:40:45,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518411302] [2022-07-13 17:40:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:45,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:40:45,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:40:45,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:40:45,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:40:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:45,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:40:45,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:40:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 17:40:45,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:40:45,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518411302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:45,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:40:45,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:40:45,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091105488] [2022-07-13 17:40:45,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:45,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:40:45,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:45,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:40:45,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:40:45,958 INFO L87 Difference]: Start difference. First operand 251 states and 374 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:40:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:45,997 INFO L93 Difference]: Finished difference Result 347 states and 499 transitions. [2022-07-13 17:40:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:40:45,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-07-13 17:40:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:46,000 INFO L225 Difference]: With dead ends: 347 [2022-07-13 17:40:46,002 INFO L226 Difference]: Without dead ends: 254 [2022-07-13 17:40:46,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:40:46,005 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 742 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 [2022-07-13 17:40:46,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 742 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:40:46,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-13 17:40:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2022-07-13 17:40:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 197 states have (on average 1.5076142131979695) internal successors, (297), 198 states have internal predecessors, (297), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-13 17:40:46,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 376 transitions. [2022-07-13 17:40:46,030 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 376 transitions. Word has length 98 [2022-07-13 17:40:46,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:46,032 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 376 transitions. [2022-07-13 17:40:46,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:40:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 376 transitions. [2022-07-13 17:40:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 17:40:46,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:46,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-13 17:40:46,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:40:46,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 17:40:46,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:46,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1193905333, now seen corresponding path program 1 times [2022-07-13 17:40:46,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:46,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945805631] [2022-07-13 17:40:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:40:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:40:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:40:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:40:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:40:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:40:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:40:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:40:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:40:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:40:46,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:46,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945805631] [2022-07-13 17:40:46,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945805631] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:40:46,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248475826] [2022-07-13 17:40:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:46,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:40:46,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:40:46,404 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:40:46,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:40:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:40:46,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:40:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 17:40:46,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:40:46,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248475826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:46,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:40:46,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:40:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424998332] [2022-07-13 17:40:46,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:46,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:40:46,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:46,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:40:46,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:40:46,652 INFO L87 Difference]: Start difference. First operand 253 states and 376 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:40:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:46,674 INFO L93 Difference]: Finished difference Result 541 states and 819 transitions. [2022-07-13 17:40:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:40:46,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-07-13 17:40:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:46,676 INFO L225 Difference]: With dead ends: 541 [2022-07-13 17:40:46,676 INFO L226 Difference]: Without dead ends: 315 [2022-07-13 17:40:46,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:40:46,678 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 115 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 718 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 [2022-07-13 17:40:46,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 718 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:40:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-13 17:40:46,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 307. [2022-07-13 17:40:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 240 states have (on average 1.5291666666666666) internal successors, (367), 241 states have internal predecessors, (367), 51 states have call successors, (51), 15 states have call predecessors, (51), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-13 17:40:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 468 transitions. [2022-07-13 17:40:46,694 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 468 transitions. Word has length 107 [2022-07-13 17:40:46,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:46,694 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 468 transitions. [2022-07-13 17:40:46,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:40:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 468 transitions. [2022-07-13 17:40:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 17:40:46,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:46,696 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-13 17:40:46,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 17:40:46,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:40:46,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1043469568, now seen corresponding path program 1 times [2022-07-13 17:40:46,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:46,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536790027] [2022-07-13 17:40:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:46,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:40:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:40:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:40:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:40:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:40:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:40:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:40:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:40:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:40:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:40:47,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:47,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536790027] [2022-07-13 17:40:47,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536790027] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:40:47,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738798431] [2022-07-13 17:40:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:47,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:40:47,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:40:47,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:40:47,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 17:40:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 17:40:47,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:40:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 17:40:47,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:40:47,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738798431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:47,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:40:47,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-13 17:40:47,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463660165] [2022-07-13 17:40:47,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:47,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:40:47,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:47,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:40:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:40:47,300 INFO L87 Difference]: Start difference. First operand 307 states and 468 transitions. Second operand has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:40:47,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:47,357 INFO L93 Difference]: Finished difference Result 605 states and 926 transitions. [2022-07-13 17:40:47,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:40:47,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-07-13 17:40:47,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:47,362 INFO L225 Difference]: With dead ends: 605 [2022-07-13 17:40:47,363 INFO L226 Difference]: Without dead ends: 309 [2022-07-13 17:40:47,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:40:47,366 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 133 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:40:47,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1307 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:40:47,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-13 17:40:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2022-07-13 17:40:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 241 states have (on average 1.5269709543568464) internal successors, (368), 243 states have internal predecessors, (368), 51 states have call successors, (51), 15 states have call predecessors, (51), 16 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2022-07-13 17:40:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 471 transitions. [2022-07-13 17:40:47,401 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 471 transitions. Word has length 108 [2022-07-13 17:40:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:47,402 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 471 transitions. [2022-07-13 17:40:47,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:40:47,402 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 471 transitions. [2022-07-13 17:40:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 17:40:47,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:47,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:40:47,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 17:40:47,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:40:47,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:47,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:47,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1886412003, now seen corresponding path program 1 times [2022-07-13 17:40:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:47,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691689832] [2022-07-13 17:40:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:47,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:40:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:40:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:40:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:40:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:40:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:40:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:40:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:40:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:40:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:40:47,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:47,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691689832] [2022-07-13 17:40:47,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691689832] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:40:47,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180851076] [2022-07-13 17:40:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:47,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:40:47,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:40:47,760 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:40:47,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 17:40:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:47,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:40:47,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:40:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 17:40:47,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:40:47,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180851076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:47,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:40:47,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-13 17:40:47,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225406909] [2022-07-13 17:40:47,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:47,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:40:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:40:47,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:40:47,990 INFO L87 Difference]: Start difference. First operand 309 states and 471 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:40:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:48,044 INFO L93 Difference]: Finished difference Result 607 states and 931 transitions. [2022-07-13 17:40:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:40:48,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2022-07-13 17:40:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:48,046 INFO L225 Difference]: With dead ends: 607 [2022-07-13 17:40:48,046 INFO L226 Difference]: Without dead ends: 311 [2022-07-13 17:40:48,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:40:48,047 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 132 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:40:48,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1296 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:40:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-13 17:40:48,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2022-07-13 17:40:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 242 states have (on average 1.524793388429752) internal successors, (369), 245 states have internal predecessors, (369), 51 states have call successors, (51), 15 states have call predecessors, (51), 17 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2022-07-13 17:40:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 477 transitions. [2022-07-13 17:40:48,061 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 477 transitions. Word has length 109 [2022-07-13 17:40:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:48,062 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 477 transitions. [2022-07-13 17:40:48,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:40:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 477 transitions. [2022-07-13 17:40:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 17:40:48,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:48,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:40:48,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 17:40:48,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:40:48,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:48,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:48,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1125567738, now seen corresponding path program 1 times [2022-07-13 17:40:48,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:48,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447093962] [2022-07-13 17:40:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:40:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:40:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:40:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:40:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:40:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:40:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:40:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:40:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:40:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:40:48,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:48,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447093962] [2022-07-13 17:40:48,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447093962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:48,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:40:48,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:40:48,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940522677] [2022-07-13 17:40:48,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:48,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:40:48,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:48,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:40:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:40:48,350 INFO L87 Difference]: Start difference. First operand 311 states and 477 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:40:49,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:49,461 INFO L93 Difference]: Finished difference Result 734 states and 1134 transitions. [2022-07-13 17:40:49,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:40:49,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-07-13 17:40:49,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:49,464 INFO L225 Difference]: With dead ends: 734 [2022-07-13 17:40:49,464 INFO L226 Difference]: Without dead ends: 446 [2022-07-13 17:40:49,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:40:49,465 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 799 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:40:49,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1329 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:40:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-07-13 17:40:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 311. [2022-07-13 17:40:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 242 states have (on average 1.524793388429752) internal successors, (369), 245 states have internal predecessors, (369), 51 states have call successors, (51), 15 states have call predecessors, (51), 17 states have return successors, (56), 50 states have call predecessors, (56), 50 states have call successors, (56) [2022-07-13 17:40:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 476 transitions. [2022-07-13 17:40:49,486 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 476 transitions. Word has length 110 [2022-07-13 17:40:49,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:49,487 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 476 transitions. [2022-07-13 17:40:49,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:40:49,487 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 476 transitions. [2022-07-13 17:40:49,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 17:40:49,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:49,488 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:40:49,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:40:49,489 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:49,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:49,489 INFO L85 PathProgramCache]: Analyzing trace with hash -649999681, now seen corresponding path program 2 times [2022-07-13 17:40:49,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:49,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324880944] [2022-07-13 17:40:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:49,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:40:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:40:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:40:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:40:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:40:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:40:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:40:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:40:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:40:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:40:49,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:49,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324880944] [2022-07-13 17:40:49,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324880944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:49,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:40:49,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:40:49,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762896266] [2022-07-13 17:40:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:49,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:40:49,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:49,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:40:49,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:40:49,579 INFO L87 Difference]: Start difference. First operand 311 states and 476 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:40:50,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:50,683 INFO L93 Difference]: Finished difference Result 736 states and 1137 transitions. [2022-07-13 17:40:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:40:50,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-07-13 17:40:50,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:50,686 INFO L225 Difference]: With dead ends: 736 [2022-07-13 17:40:50,686 INFO L226 Difference]: Without dead ends: 448 [2022-07-13 17:40:50,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:40:50,688 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 794 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:40:50,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 1330 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:40:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-07-13 17:40:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 313. [2022-07-13 17:40:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 51 states have call successors, (51), 15 states have call predecessors, (51), 18 states have return successors, (58), 50 states have call predecessors, (58), 50 states have call successors, (58) [2022-07-13 17:40:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 479 transitions. [2022-07-13 17:40:50,703 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 479 transitions. Word has length 111 [2022-07-13 17:40:50,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:50,704 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 479 transitions. [2022-07-13 17:40:50,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:40:50,704 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 479 transitions. [2022-07-13 17:40:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 17:40:50,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:50,705 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:40:50,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:40:50,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1391093877, now seen corresponding path program 1 times [2022-07-13 17:40:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:50,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118211157] [2022-07-13 17:40:50,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:40:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:40:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:40:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:40:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:40:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:40:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:40:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:40:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:40:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:40:50,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:50,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118211157] [2022-07-13 17:40:50,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118211157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:50,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:40:50,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:40:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166338073] [2022-07-13 17:40:50,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:50,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:40:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:50,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:40:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:40:50,818 INFO L87 Difference]: Start difference. First operand 313 states and 479 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-13 17:40:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:52,242 INFO L93 Difference]: Finished difference Result 734 states and 1132 transitions. [2022-07-13 17:40:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:40:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 112 [2022-07-13 17:40:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:52,257 INFO L225 Difference]: With dead ends: 734 [2022-07-13 17:40:52,257 INFO L226 Difference]: Without dead ends: 448 [2022-07-13 17:40:52,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:40:52,259 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 915 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 2740 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:40:52,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1640 Invalid, 3130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 17:40:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-07-13 17:40:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 313. [2022-07-13 17:40:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 51 states have call successors, (51), 15 states have call predecessors, (51), 18 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2022-07-13 17:40:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 478 transitions. [2022-07-13 17:40:52,291 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 478 transitions. Word has length 112 [2022-07-13 17:40:52,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:52,292 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 478 transitions. [2022-07-13 17:40:52,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-13 17:40:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 478 transitions. [2022-07-13 17:40:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 17:40:52,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:52,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:40:52,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:40:52,294 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:52,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:52,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1399040254, now seen corresponding path program 2 times [2022-07-13 17:40:52,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:52,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553927775] [2022-07-13 17:40:52,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:52,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:40:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:40:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:40:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:40:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:40:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:40:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:40:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:40:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:40:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:40:52,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:52,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553927775] [2022-07-13 17:40:52,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553927775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:52,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:40:52,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:40:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855830635] [2022-07-13 17:40:52,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:52,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:40:52,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:52,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:40:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:40:52,413 INFO L87 Difference]: Start difference. First operand 313 states and 478 transitions. Second operand has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-13 17:40:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:53,853 INFO L93 Difference]: Finished difference Result 736 states and 1138 transitions. [2022-07-13 17:40:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:40:53,854 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2022-07-13 17:40:53,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:53,857 INFO L225 Difference]: With dead ends: 736 [2022-07-13 17:40:53,857 INFO L226 Difference]: Without dead ends: 450 [2022-07-13 17:40:53,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:40:53,859 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 909 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 2787 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:40:53,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1643 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2787 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 17:40:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-07-13 17:40:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 315. [2022-07-13 17:40:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 244 states have (on average 1.5204918032786885) internal successors, (371), 249 states have internal predecessors, (371), 51 states have call successors, (51), 15 states have call predecessors, (51), 19 states have return successors, (62), 50 states have call predecessors, (62), 50 states have call successors, (62) [2022-07-13 17:40:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 484 transitions. [2022-07-13 17:40:53,881 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 484 transitions. Word has length 113 [2022-07-13 17:40:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:53,882 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 484 transitions. [2022-07-13 17:40:53,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-13 17:40:53,882 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 484 transitions. [2022-07-13 17:40:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 17:40:53,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:53,884 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:40:53,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:40:53,884 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1517675216, now seen corresponding path program 1 times [2022-07-13 17:40:53,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:53,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045364604] [2022-07-13 17:40:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:40:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:40:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:40:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:40:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:40:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:40:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:40:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:40:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:40:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 17:40:53,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:53,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045364604] [2022-07-13 17:40:53,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045364604] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:40:53,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151132796] [2022-07-13 17:40:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:53,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:40:53,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:40:53,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:40:53,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 17:40:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:54,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:40:54,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:40:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:40:54,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 17:40:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:40:54,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151132796] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 17:40:54,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 17:40:54,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-13 17:40:54,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116963979] [2022-07-13 17:40:54,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 17:40:54,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 17:40:54,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:54,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 17:40:54,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:40:54,300 INFO L87 Difference]: Start difference. First operand 315 states and 484 transitions. Second operand has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 17:40:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:56,772 INFO L93 Difference]: Finished difference Result 1465 states and 2446 transitions. [2022-07-13 17:40:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 17:40:56,781 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 114 [2022-07-13 17:40:56,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:56,786 INFO L225 Difference]: With dead ends: 1465 [2022-07-13 17:40:56,786 INFO L226 Difference]: Without dead ends: 1181 [2022-07-13 17:40:56,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-13 17:40:56,788 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 2885 mSDsluCounter, 3176 mSDsCounter, 0 mSdLazyCounter, 4483 mSolverCounterSat, 1184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 3835 SdHoareTripleChecker+Invalid, 5667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1184 IncrementalHoareTripleChecker+Valid, 4483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:40:56,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2887 Valid, 3835 Invalid, 5667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1184 Valid, 4483 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 17:40:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-07-13 17:40:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 668. [2022-07-13 17:40:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.5797373358348967) internal successors, (842), 538 states have internal predecessors, (842), 115 states have call successors, (115), 15 states have call predecessors, (115), 19 states have return successors, (136), 114 states have call predecessors, (136), 114 states have call successors, (136) [2022-07-13 17:40:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1093 transitions. [2022-07-13 17:40:56,824 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1093 transitions. Word has length 114 [2022-07-13 17:40:56,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:56,824 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1093 transitions. [2022-07-13 17:40:56,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-13 17:40:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1093 transitions. [2022-07-13 17:40:56,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 17:40:56,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:56,827 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:40:56,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-13 17:40:57,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:40:57,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:57,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1763331710, now seen corresponding path program 1 times [2022-07-13 17:40:57,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:57,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684815575] [2022-07-13 17:40:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:57,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:40:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:40:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:40:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:40:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:40:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:40:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:40:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:40:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:40:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:40:57,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:57,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684815575] [2022-07-13 17:40:57,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684815575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:57,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:40:57,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:40:57,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316195346] [2022-07-13 17:40:57,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:57,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:40:57,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:57,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:40:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:40:57,105 INFO L87 Difference]: Start difference. First operand 668 states and 1093 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:40:57,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:57,972 INFO L93 Difference]: Finished difference Result 1726 states and 2889 transitions. [2022-07-13 17:40:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:40:57,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2022-07-13 17:40:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:57,977 INFO L225 Difference]: With dead ends: 1726 [2022-07-13 17:40:57,978 INFO L226 Difference]: Without dead ends: 1136 [2022-07-13 17:40:57,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:40:57,980 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 789 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:40:57,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1194 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:40:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-07-13 17:40:58,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 993. [2022-07-13 17:40:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 794 states have (on average 1.5957178841309825) internal successors, (1267), 799 states have internal predecessors, (1267), 179 states have call successors, (179), 15 states have call predecessors, (179), 19 states have return successors, (210), 178 states have call predecessors, (210), 178 states have call successors, (210) [2022-07-13 17:40:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1656 transitions. [2022-07-13 17:40:58,035 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1656 transitions. Word has length 117 [2022-07-13 17:40:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:58,036 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1656 transitions. [2022-07-13 17:40:58,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:40:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1656 transitions. [2022-07-13 17:40:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 17:40:58,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:58,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:40:58,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:40:58,040 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:58,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1986162796, now seen corresponding path program 1 times [2022-07-13 17:40:58,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:58,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722729078] [2022-07-13 17:40:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:58,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:40:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:40:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:40:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:40:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:40:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:40:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:40:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:40:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:40:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:40:58,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:58,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722729078] [2022-07-13 17:40:58,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722729078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:58,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:40:58,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:40:58,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402992398] [2022-07-13 17:40:58,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:58,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:40:58,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:40:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:40:58,097 INFO L87 Difference]: Start difference. First operand 993 states and 1656 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:40:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:40:58,974 INFO L93 Difference]: Finished difference Result 2531 states and 4273 transitions. [2022-07-13 17:40:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:40:58,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-07-13 17:40:58,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:40:58,981 INFO L225 Difference]: With dead ends: 2531 [2022-07-13 17:40:58,981 INFO L226 Difference]: Without dead ends: 1669 [2022-07-13 17:40:58,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:40:58,983 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 789 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:40:58,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1163 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:40:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2022-07-13 17:40:59,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1526. [2022-07-13 17:40:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1232 states have (on average 1.6014610389610389) internal successors, (1973), 1237 states have internal predecessors, (1973), 274 states have call successors, (274), 15 states have call predecessors, (274), 19 states have return successors, (305), 273 states have call predecessors, (305), 273 states have call successors, (305) [2022-07-13 17:40:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2552 transitions. [2022-07-13 17:40:59,046 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2552 transitions. Word has length 118 [2022-07-13 17:40:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:40:59,046 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2552 transitions. [2022-07-13 17:40:59,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:40:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2552 transitions. [2022-07-13 17:40:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 17:40:59,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:40:59,051 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:40:59,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:40:59,052 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:40:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:40:59,052 INFO L85 PathProgramCache]: Analyzing trace with hash -789821556, now seen corresponding path program 1 times [2022-07-13 17:40:59,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:40:59,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368078039] [2022-07-13 17:40:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:40:59,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:40:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:40:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:40:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:40:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:40:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:40:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:40:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:40:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:40:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:40:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:40:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:40:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:40:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:40:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:40:59,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:40:59,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368078039] [2022-07-13 17:40:59,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368078039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:40:59,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:40:59,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:40:59,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714160924] [2022-07-13 17:40:59,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:40:59,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:40:59,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:40:59,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:40:59,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:40:59,125 INFO L87 Difference]: Start difference. First operand 1526 states and 2552 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:00,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:41:00,019 INFO L93 Difference]: Finished difference Result 3738 states and 6359 transitions. [2022-07-13 17:41:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:41:00,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-13 17:41:00,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:41:00,028 INFO L225 Difference]: With dead ends: 3738 [2022-07-13 17:41:00,028 INFO L226 Difference]: Without dead ends: 2478 [2022-07-13 17:41:00,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:41:00,032 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 787 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:41:00,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1158 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:41:00,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2022-07-13 17:41:00,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2335. [2022-07-13 17:41:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 1918 states have (on average 1.6058394160583942) internal successors, (3080), 1923 states have internal predecessors, (3080), 397 states have call successors, (397), 15 states have call predecessors, (397), 19 states have return successors, (444), 396 states have call predecessors, (444), 396 states have call successors, (444) [2022-07-13 17:41:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3921 transitions. [2022-07-13 17:41:00,138 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3921 transitions. Word has length 119 [2022-07-13 17:41:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:41:00,138 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3921 transitions. [2022-07-13 17:41:00,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3921 transitions. [2022-07-13 17:41:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 17:41:00,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:41:00,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:41:00,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 17:41:00,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:41:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:41:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 488386317, now seen corresponding path program 1 times [2022-07-13 17:41:00,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:41:00,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391292178] [2022-07-13 17:41:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:41:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:41:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:41:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:41:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:41:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:41:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:41:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:41:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:41:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:41:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:41:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:41:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:41:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:41:00,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:41:00,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391292178] [2022-07-13 17:41:00,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391292178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:41:00,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:41:00,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:41:00,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120931032] [2022-07-13 17:41:00,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:41:00,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:41:00,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:41:00,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:41:00,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:41:00,219 INFO L87 Difference]: Start difference. First operand 2335 states and 3921 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:01,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:41:01,114 INFO L93 Difference]: Finished difference Result 5622 states and 9619 transitions. [2022-07-13 17:41:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:41:01,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-07-13 17:41:01,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:41:01,131 INFO L225 Difference]: With dead ends: 5622 [2022-07-13 17:41:01,131 INFO L226 Difference]: Without dead ends: 3772 [2022-07-13 17:41:01,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:41:01,136 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 783 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:41:01,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1160 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:41:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2022-07-13 17:41:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 3629. [2022-07-13 17:41:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3629 states, 3033 states have (on average 1.6083086053412463) internal successors, (4878), 3038 states have internal predecessors, (4878), 576 states have call successors, (576), 15 states have call predecessors, (576), 19 states have return successors, (649), 575 states have call predecessors, (649), 575 states have call successors, (649) [2022-07-13 17:41:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 6103 transitions. [2022-07-13 17:41:01,326 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 6103 transitions. Word has length 120 [2022-07-13 17:41:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:41:01,326 INFO L495 AbstractCegarLoop]: Abstraction has 3629 states and 6103 transitions. [2022-07-13 17:41:01,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 6103 transitions. [2022-07-13 17:41:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-13 17:41:01,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:41:01,333 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:41:01,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 17:41:01,333 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:41:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:41:01,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2038387656, now seen corresponding path program 1 times [2022-07-13 17:41:01,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:41:01,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476371039] [2022-07-13 17:41:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:01,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:41:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:41:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:41:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:41:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:41:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:41:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:41:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:41:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:41:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:41:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:41:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:41:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 17:41:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:41:01,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:41:01,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476371039] [2022-07-13 17:41:01,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476371039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:41:01,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:41:01,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:41:01,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962626084] [2022-07-13 17:41:01,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:41:01,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:41:01,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:41:01,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:41:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:41:01,397 INFO L87 Difference]: Start difference. First operand 3629 states and 6103 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:02,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:41:02,396 INFO L93 Difference]: Finished difference Result 8725 states and 14983 transitions. [2022-07-13 17:41:02,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:41:02,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-07-13 17:41:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:41:02,419 INFO L225 Difference]: With dead ends: 8725 [2022-07-13 17:41:02,419 INFO L226 Difference]: Without dead ends: 5913 [2022-07-13 17:41:02,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:41:02,429 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 781 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:41:02,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1185 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:41:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5913 states. [2022-07-13 17:41:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5913 to 5770. [2022-07-13 17:41:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 4798 states have (on average 1.6015006252605253) internal successors, (7684), 4803 states have internal predecessors, (7684), 952 states have call successors, (952), 15 states have call predecessors, (952), 19 states have return successors, (1069), 951 states have call predecessors, (1069), 951 states have call successors, (1069) [2022-07-13 17:41:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 9705 transitions. [2022-07-13 17:41:02,737 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 9705 transitions. Word has length 121 [2022-07-13 17:41:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:41:02,737 INFO L495 AbstractCegarLoop]: Abstraction has 5770 states and 9705 transitions. [2022-07-13 17:41:02,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 9705 transitions. [2022-07-13 17:41:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 17:41:02,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:41:02,748 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:41:02,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:41:02,749 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:41:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:41:02,749 INFO L85 PathProgramCache]: Analyzing trace with hash -739723567, now seen corresponding path program 1 times [2022-07-13 17:41:02,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:41:02,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899693318] [2022-07-13 17:41:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:41:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:41:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:41:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:41:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:41:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:41:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:41:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:41:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:41:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:41:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:41:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:41:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 17:41:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:41:02,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:41:02,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899693318] [2022-07-13 17:41:02,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899693318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:41:02,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:41:02,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:41:02,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208399850] [2022-07-13 17:41:02,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:41:02,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:41:02,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:41:02,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:41:02,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:41:02,818 INFO L87 Difference]: Start difference. First operand 5770 states and 9705 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:41:03,986 INFO L93 Difference]: Finished difference Result 14342 states and 24596 transitions. [2022-07-13 17:41:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:41:03,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-07-13 17:41:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:41:04,019 INFO L225 Difference]: With dead ends: 14342 [2022-07-13 17:41:04,019 INFO L226 Difference]: Without dead ends: 9791 [2022-07-13 17:41:04,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:41:04,031 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 779 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:41:04,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1161 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:41:04,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9791 states. [2022-07-13 17:41:04,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9791 to 9648. [2022-07-13 17:41:04,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9648 states, 8070 states have (on average 1.5988847583643122) internal successors, (12903), 8075 states have internal predecessors, (12903), 1558 states have call successors, (1558), 15 states have call predecessors, (1558), 19 states have return successors, (1753), 1557 states have call predecessors, (1753), 1557 states have call successors, (1753) [2022-07-13 17:41:04,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9648 states to 9648 states and 16214 transitions. [2022-07-13 17:41:04,524 INFO L78 Accepts]: Start accepts. Automaton has 9648 states and 16214 transitions. Word has length 122 [2022-07-13 17:41:04,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:41:04,524 INFO L495 AbstractCegarLoop]: Abstraction has 9648 states and 16214 transitions. [2022-07-13 17:41:04,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:04,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9648 states and 16214 transitions. [2022-07-13 17:41:04,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-13 17:41:04,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:41:04,539 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:41:04,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:41:04,539 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:41:04,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:41:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1028081462, now seen corresponding path program 1 times [2022-07-13 17:41:04,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:41:04,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943945036] [2022-07-13 17:41:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:04,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:41:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:41:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:41:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:41:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:41:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:41:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:41:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:41:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:41:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:41:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:41:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:41:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 17:41:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:41:04,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:41:04,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943945036] [2022-07-13 17:41:04,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943945036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:41:04,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:41:04,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:41:04,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510609291] [2022-07-13 17:41:04,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:41:04,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:41:04,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:41:04,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:41:04,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:41:04,610 INFO L87 Difference]: Start difference. First operand 9648 states and 16214 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:41:05,973 INFO L93 Difference]: Finished difference Result 25051 states and 42877 transitions. [2022-07-13 17:41:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:41:05,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-07-13 17:41:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:41:06,027 INFO L225 Difference]: With dead ends: 25051 [2022-07-13 17:41:06,027 INFO L226 Difference]: Without dead ends: 17104 [2022-07-13 17:41:06,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:41:06,052 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 777 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:41:06,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1200 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:41:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17104 states. [2022-07-13 17:41:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17104 to 16961. [2022-07-13 17:41:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16961 states, 14180 states have (on average 1.5901974612129761) internal successors, (22549), 14185 states have internal predecessors, (22549), 2761 states have call successors, (2761), 15 states have call predecessors, (2761), 19 states have return successors, (3100), 2760 states have call predecessors, (3100), 2760 states have call successors, (3100) [2022-07-13 17:41:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16961 states to 16961 states and 28410 transitions. [2022-07-13 17:41:06,972 INFO L78 Accepts]: Start accepts. Automaton has 16961 states and 28410 transitions. Word has length 123 [2022-07-13 17:41:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:41:06,973 INFO L495 AbstractCegarLoop]: Abstraction has 16961 states and 28410 transitions. [2022-07-13 17:41:06,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16961 states and 28410 transitions. [2022-07-13 17:41:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 17:41:06,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:41:06,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:41:06,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:41:06,990 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:41:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:41:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash 558503570, now seen corresponding path program 1 times [2022-07-13 17:41:06,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:41:06,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220577450] [2022-07-13 17:41:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:06,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:41:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:41:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:41:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:41:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:41:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:41:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:41:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:41:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:41:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:41:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:41:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:41:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 17:41:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:41:07,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:41:07,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220577450] [2022-07-13 17:41:07,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220577450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:41:07,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:41:07,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:41:07,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576933515] [2022-07-13 17:41:07,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:41:07,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:41:07,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:41:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:41:07,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:41:07,059 INFO L87 Difference]: Start difference. First operand 16961 states and 28410 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:09,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:41:09,001 INFO L93 Difference]: Finished difference Result 45027 states and 76890 transitions. [2022-07-13 17:41:09,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:41:09,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-07-13 17:41:09,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:41:09,110 INFO L225 Difference]: With dead ends: 45027 [2022-07-13 17:41:09,111 INFO L226 Difference]: Without dead ends: 30444 [2022-07-13 17:41:09,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:41:09,147 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 777 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:41:09,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1163 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:41:09,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30444 states. [2022-07-13 17:41:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30444 to 30301. [2022-07-13 17:41:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30301 states, 25481 states have (on average 1.5859660138927043) internal successors, (40412), 25486 states have internal predecessors, (40412), 4800 states have call successors, (4800), 15 states have call predecessors, (4800), 19 states have return successors, (5413), 4799 states have call predecessors, (5413), 4799 states have call successors, (5413) [2022-07-13 17:41:10,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30301 states to 30301 states and 50625 transitions. [2022-07-13 17:41:10,815 INFO L78 Accepts]: Start accepts. Automaton has 30301 states and 50625 transitions. Word has length 124 [2022-07-13 17:41:10,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:41:10,815 INFO L495 AbstractCegarLoop]: Abstraction has 30301 states and 50625 transitions. [2022-07-13 17:41:10,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:10,815 INFO L276 IsEmpty]: Start isEmpty. Operand 30301 states and 50625 transitions. [2022-07-13 17:41:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 17:41:10,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:41:10,839 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:41:10,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:41:10,840 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:41:10,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:41:10,840 INFO L85 PathProgramCache]: Analyzing trace with hash 678638104, now seen corresponding path program 1 times [2022-07-13 17:41:10,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:41:10,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878148955] [2022-07-13 17:41:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:10,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:41:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:41:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:41:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:41:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:41:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:41:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:41:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:41:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:41:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:41:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:41:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:41:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 17:41:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:41:10,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:41:10,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878148955] [2022-07-13 17:41:10,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878148955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:41:10,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:41:10,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:41:10,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689514533] [2022-07-13 17:41:10,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:41:10,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:41:10,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:41:10,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:41:10,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:41:10,937 INFO L87 Difference]: Start difference. First operand 30301 states and 50625 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:41:13,859 INFO L93 Difference]: Finished difference Result 82764 states and 140414 transitions. [2022-07-13 17:41:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:41:13,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2022-07-13 17:41:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:41:14,071 INFO L225 Difference]: With dead ends: 82764 [2022-07-13 17:41:14,071 INFO L226 Difference]: Without dead ends: 55653 [2022-07-13 17:41:14,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:41:14,152 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 775 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:41:14,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1164 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:41:14,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55653 states. [2022-07-13 17:41:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55653 to 55510. [2022-07-13 17:41:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55510 states, 46975 states have (on average 1.580478978179883) internal successors, (74243), 46980 states have internal predecessors, (74243), 8515 states have call successors, (8515), 15 states have call predecessors, (8515), 19 states have return successors, (9660), 8514 states have call predecessors, (9660), 8514 states have call successors, (9660) [2022-07-13 17:41:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55510 states to 55510 states and 92418 transitions. [2022-07-13 17:41:17,009 INFO L78 Accepts]: Start accepts. Automaton has 55510 states and 92418 transitions. Word has length 125 [2022-07-13 17:41:17,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:41:17,010 INFO L495 AbstractCegarLoop]: Abstraction has 55510 states and 92418 transitions. [2022-07-13 17:41:17,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 55510 states and 92418 transitions. [2022-07-13 17:41:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 17:41:17,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:41:17,281 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:41:17,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:41:17,282 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:41:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:41:17,282 INFO L85 PathProgramCache]: Analyzing trace with hash 179643826, now seen corresponding path program 1 times [2022-07-13 17:41:17,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:41:17,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531338884] [2022-07-13 17:41:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:17,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:41:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:41:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:41:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:41:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:41:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:41:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:41:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:41:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:41:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:41:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:41:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 17:41:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 17:41:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:41:17,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:41:17,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531338884] [2022-07-13 17:41:17,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531338884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:41:17,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:41:17,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:41:17,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059634688] [2022-07-13 17:41:17,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:41:17,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:41:17,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:41:17,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:41:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:41:17,359 INFO L87 Difference]: Start difference. First operand 55510 states and 92418 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:21,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:41:21,875 INFO L93 Difference]: Finished difference Result 103820 states and 176400 transitions. [2022-07-13 17:41:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:41:21,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2022-07-13 17:41:21,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:41:22,193 INFO L225 Difference]: With dead ends: 103820 [2022-07-13 17:41:22,193 INFO L226 Difference]: Without dead ends: 103727 [2022-07-13 17:41:22,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:41:22,237 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 772 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:41:22,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1163 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 17:41:22,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103727 states. [2022-07-13 17:41:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103727 to 103584. [2022-07-13 17:41:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103584 states, 88250 states have (on average 1.573643059490085) internal successors, (138874), 88255 states have internal predecessors, (138874), 15314 states have call successors, (15314), 15 states have call predecessors, (15314), 19 states have return successors, (17505), 15313 states have call predecessors, (17505), 15313 states have call successors, (17505) [2022-07-13 17:41:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103584 states to 103584 states and 171693 transitions. [2022-07-13 17:41:27,556 INFO L78 Accepts]: Start accepts. Automaton has 103584 states and 171693 transitions. Word has length 126 [2022-07-13 17:41:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:41:27,556 INFO L495 AbstractCegarLoop]: Abstraction has 103584 states and 171693 transitions. [2022-07-13 17:41:27,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:41:27,556 INFO L276 IsEmpty]: Start isEmpty. Operand 103584 states and 171693 transitions. [2022-07-13 17:41:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-13 17:41:27,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:41:27,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:41:27,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:41:27,583 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:41:27,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:41:27,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1359154647, now seen corresponding path program 1 times [2022-07-13 17:41:27,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:41:27,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744572468] [2022-07-13 17:41:27,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:27,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:41:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:41:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:41:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:41:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:41:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:41:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:41:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:41:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:41:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:41:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:41:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 17:41:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:41:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:41:27,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:41:27,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744572468] [2022-07-13 17:41:27,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744572468] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:41:27,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016884303] [2022-07-13 17:41:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:27,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:41:27,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:41:27,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:41:27,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 17:41:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:27,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 17:41:27,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:41:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:41:28,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:41:28,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016884303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:41:28,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:41:28,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2022-07-13 17:41:28,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072326290] [2022-07-13 17:41:28,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:41:28,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:41:28,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:41:28,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:41:28,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-07-13 17:41:28,184 INFO L87 Difference]: Start difference. First operand 103584 states and 171693 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-13 17:41:32,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:41:32,622 INFO L93 Difference]: Finished difference Result 103930 states and 172171 transitions. [2022-07-13 17:41:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 17:41:32,623 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 127 [2022-07-13 17:41:32,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:41:32,965 INFO L225 Difference]: With dead ends: 103930 [2022-07-13 17:41:32,965 INFO L226 Difference]: Without dead ends: 103843 [2022-07-13 17:41:33,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=1609, Unknown=0, NotChecked=0, Total=1806 [2022-07-13 17:41:33,009 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 743 mSDsluCounter, 3728 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 4150 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:41:33,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 4150 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 17:41:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103843 states. [2022-07-13 17:41:37,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103843 to 103734. [2022-07-13 17:41:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103734 states, 88364 states have (on average 1.5733669820288805) internal successors, (139029), 88370 states have internal predecessors, (139029), 15338 states have call successors, (15338), 24 states have call predecessors, (15338), 31 states have return successors, (17537), 15339 states have call predecessors, (17537), 15336 states have call successors, (17537) [2022-07-13 17:41:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103734 states to 103734 states and 171904 transitions. [2022-07-13 17:41:38,547 INFO L78 Accepts]: Start accepts. Automaton has 103734 states and 171904 transitions. Word has length 127 [2022-07-13 17:41:38,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:41:38,547 INFO L495 AbstractCegarLoop]: Abstraction has 103734 states and 171904 transitions. [2022-07-13 17:41:38,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-13 17:41:38,548 INFO L276 IsEmpty]: Start isEmpty. Operand 103734 states and 171904 transitions. [2022-07-13 17:41:38,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 17:41:38,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:41:38,573 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:41:38,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 17:41:38,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:41:38,784 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:41:38,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:41:38,785 INFO L85 PathProgramCache]: Analyzing trace with hash -312446740, now seen corresponding path program 1 times [2022-07-13 17:41:38,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:41:38,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378768550] [2022-07-13 17:41:38,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:38,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:41:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:41:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:41:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:41:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:41:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:41:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:41:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:41:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:41:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:41:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:41:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 17:41:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 17:41:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:41:38,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:41:38,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378768550] [2022-07-13 17:41:38,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378768550] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:41:38,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440406299] [2022-07-13 17:41:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:41:38,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:41:38,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:41:38,989 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:41:38,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 17:41:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:41:39,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 17:41:39,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:41:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:41:39,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:41:39,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440406299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:41:39,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:41:39,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2022-07-13 17:41:39,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640515414] [2022-07-13 17:41:39,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:41:39,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:41:39,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:41:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:41:39,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-07-13 17:41:39,385 INFO L87 Difference]: Start difference. First operand 103734 states and 171904 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 states have internal predecessors, (96), 5 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12)