./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec0_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_product19.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 9deea958caebdff7c89a17deb67516eff149386872824a7682accca78686b765 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:00:29,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:00:29,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:00:29,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:00:29,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:00:29,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:00:29,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:00:29,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:00:29,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:00:29,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:00:29,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:00:29,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:00:29,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:00:29,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:00:29,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:00:29,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:00:29,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:00:29,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:00:29,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:00:29,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:00:29,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:00:29,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:00:29,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:00:29,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:00:29,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:00:29,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:00:29,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:00:29,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:00:29,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:00:29,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:00:29,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:00:29,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:00:29,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:00:29,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:00:29,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:00:29,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:00:29,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:00:29,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:00:29,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:00:29,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:00:29,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:00:29,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:00:29,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:00:29,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:00:29,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:00:29,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:00:29,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:00:29,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:00:29,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:00:29,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:00:29,406 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:00:29,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:00:29,407 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:00:29,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:00:29,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:00:29,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:00:29,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:00:29,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:00:29,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:00:29,409 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:00:29,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:00:29,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:00:29,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:00:29,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:00:29,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:00:29,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:00:29,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:00:29,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:00:29,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:00:29,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:00:29,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:00:29,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:00:29,411 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:00:29,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:00:29,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:00:29,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:00:29,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9deea958caebdff7c89a17deb67516eff149386872824a7682accca78686b765 [2021-12-21 13:00:29,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:00:29,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:00:29,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:00:29,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:00:29,658 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:00:29,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec0_product19.cil.c [2021-12-21 13:00:29,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec114534/e38a3f0e1c5140d8a9755b1ef61fe3dc/FLAG9902d68ff [2021-12-21 13:00:30,160 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:00:30,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product19.cil.c [2021-12-21 13:00:30,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec114534/e38a3f0e1c5140d8a9755b1ef61fe3dc/FLAG9902d68ff [2021-12-21 13:00:30,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec114534/e38a3f0e1c5140d8a9755b1ef61fe3dc [2021-12-21 13:00:30,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:00:30,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:00:30,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:00:30,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:00:30,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:00:30,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:30,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32071d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30, skipping insertion in model container [2021-12-21 13:00:30,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:30,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:00:30,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:00:30,618 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_product19.cil.c[39319,39332] [2021-12-21 13:00:30,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:00:30,738 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:00:30,793 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_product19.cil.c[39319,39332] [2021-12-21 13:00:30,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:00:30,839 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:00:30,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30 WrapperNode [2021-12-21 13:00:30,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:00:30,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:00:30,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:00:30,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:00:30,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:30,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:30,940 INFO L137 Inliner]: procedures = 127, calls = 198, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 992 [2021-12-21 13:00:30,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:00:30,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:00:30,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:00:30,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:00:30,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:30,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:30,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:30,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:30,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:31,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:31,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:31,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:00:31,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:00:31,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:00:31,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:00:31,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (1/1) ... [2021-12-21 13:00:31,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:00:31,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:31,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 13:00:31,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 13:00:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-21 13:00:31,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-21 13:00:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-21 13:00:31,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-21 13:00:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-21 13:00:31,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-21 13:00:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-21 13:00:31,160 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-21 13:00:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-21 13:00:31,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-21 13:00:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-21 13:00:31,161 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-21 13:00:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-21 13:00:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-21 13:00:31,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-21 13:00:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-21 13:00:31,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-21 13:00:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:00:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-21 13:00:31,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-21 13:00:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-21 13:00:31,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-21 13:00:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-21 13:00:31,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-21 13:00:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-21 13:00:31,163 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-21 13:00:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-21 13:00:31,163 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-21 13:00:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-21 13:00:31,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-21 13:00:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-21 13:00:31,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-21 13:00:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:00:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-21 13:00:31,164 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-21 13:00:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:00:31,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:00:31,386 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:00:31,387 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:00:31,871 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:00:31,883 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:00:31,884 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:00:31,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:00:31 BoogieIcfgContainer [2021-12-21 13:00:31,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:00:31,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:00:31,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:00:31,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:00:31,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:00:30" (1/3) ... [2021-12-21 13:00:31,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e0947c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:00:31, skipping insertion in model container [2021-12-21 13:00:31,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:30" (2/3) ... [2021-12-21 13:00:31,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e0947c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:00:31, skipping insertion in model container [2021-12-21 13:00:31,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:00:31" (3/3) ... [2021-12-21 13:00:31,892 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product19.cil.c [2021-12-21 13:00:31,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:00:31,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:00:31,936 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:00:31,944 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 13:00:31,945 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:00:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 301 states, 241 states have (on average 1.5352697095435686) internal successors, (370), 243 states have internal predecessors, (370), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-21 13:00:31,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-21 13:00:31,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:31,988 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-21 13:00:31,988 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:31,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:31,997 INFO L85 PathProgramCache]: Analyzing trace with hash -756518862, now seen corresponding path program 1 times [2021-12-21 13:00:32,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:32,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569899042] [2021-12-21 13:00:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:32,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 13:00:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:00:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:00:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:00:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:00:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:00:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:00:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 13:00:32,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:32,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569899042] [2021-12-21 13:00:32,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569899042] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:32,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908648503] [2021-12-21 13:00:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:32,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:32,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:32,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:32,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:00:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:32,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 13:00:32,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 13:00:33,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:33,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908648503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:33,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:33,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-21 13:00:33,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287862834] [2021-12-21 13:00:33,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:33,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:00:33,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:33,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:00:33,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:33,047 INFO L87 Difference]: Start difference. First operand has 301 states, 241 states have (on average 1.5352697095435686) internal successors, (370), 243 states have internal predecessors, (370), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:33,101 INFO L93 Difference]: Finished difference Result 448 states and 662 transitions. [2021-12-21 13:00:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:00:33,103 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2021-12-21 13:00:33,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:33,112 INFO L225 Difference]: With dead ends: 448 [2021-12-21 13:00:33,118 INFO L226 Difference]: Without dead ends: 294 [2021-12-21 13:00:33,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:33,126 INFO L933 BasicCegarLoop]: 450 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, 450 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:33,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-21 13:00:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-12-21 13:00:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 235 states have (on average 1.5276595744680852) internal successors, (359), 236 states have internal predecessors, (359), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-21 13:00:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 442 transitions. [2021-12-21 13:00:33,193 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 442 transitions. Word has length 104 [2021-12-21 13:00:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:33,195 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 442 transitions. [2021-12-21 13:00:33,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 442 transitions. [2021-12-21 13:00:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-21 13:00:33,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:33,202 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-21 13:00:33,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 13:00:33,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-21 13:00:33,420 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:33,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:33,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2087935493, now seen corresponding path program 1 times [2021-12-21 13:00:33,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:33,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059513775] [2021-12-21 13:00:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:33,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 13:00:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 13:00:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:00:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:00:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:00:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:00:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:00:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 13:00:33,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:33,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059513775] [2021-12-21 13:00:33,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059513775] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:33,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477558216] [2021-12-21 13:00:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:33,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:33,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:33,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:33,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 13:00:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:33,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 13:00:33,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 13:00:34,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:34,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477558216] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:34,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:34,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 13:00:34,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853043710] [2021-12-21 13:00:34,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:34,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:00:34,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:34,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:00:34,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:34,047 INFO L87 Difference]: Start difference. First operand 294 states and 442 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:34,075 INFO L93 Difference]: Finished difference Result 438 states and 643 transitions. [2021-12-21 13:00:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:00:34,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2021-12-21 13:00:34,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:34,077 INFO L225 Difference]: With dead ends: 438 [2021-12-21 13:00:34,078 INFO L226 Difference]: Without dead ends: 297 [2021-12-21 13:00:34,079 INFO L932 BasicCegarLoop]: 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 [2021-12-21 13:00:34,080 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 1 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:34,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 878 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-12-21 13:00:34,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296. [2021-12-21 13:00:34,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 237 states have (on average 1.5232067510548524) internal successors, (361), 238 states have internal predecessors, (361), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-21 13:00:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 444 transitions. [2021-12-21 13:00:34,095 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 444 transitions. Word has length 105 [2021-12-21 13:00:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:34,095 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 444 transitions. [2021-12-21 13:00:34,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 444 transitions. [2021-12-21 13:00:34,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-21 13:00:34,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:34,100 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-21 13:00:34,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 13:00:34,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-21 13:00:34,301 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash 681092572, now seen corresponding path program 1 times [2021-12-21 13:00:34,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:34,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235309648] [2021-12-21 13:00:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:34,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 13:00:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:00:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:00:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:00:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:00:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:00:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:00:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 13:00:34,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:34,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235309648] [2021-12-21 13:00:34,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235309648] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:34,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776580559] [2021-12-21 13:00:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:34,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:34,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:34,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:34,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 13:00:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:34,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:00:34,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 13:00:34,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:34,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776580559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:34,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:34,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 13:00:34,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178575887] [2021-12-21 13:00:34,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:34,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:00:34,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:00:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:34,768 INFO L87 Difference]: Start difference. First operand 296 states and 444 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:34,807 INFO L93 Difference]: Finished difference Result 622 states and 947 transitions. [2021-12-21 13:00:34,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:00:34,807 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2021-12-21 13:00:34,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:34,812 INFO L225 Difference]: With dead ends: 622 [2021-12-21 13:00:34,812 INFO L226 Difference]: Without dead ends: 353 [2021-12-21 13:00:34,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:34,818 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 107 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:34,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 855 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:34,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-12-21 13:00:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 345. [2021-12-21 13:00:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 275 states have (on average 1.538181818181818) internal successors, (423), 276 states have internal predecessors, (423), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-21 13:00:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 528 transitions. [2021-12-21 13:00:34,844 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 528 transitions. Word has length 111 [2021-12-21 13:00:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:34,845 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 528 transitions. [2021-12-21 13:00:34,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:34,845 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 528 transitions. [2021-12-21 13:00:34,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 13:00:34,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:34,847 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-21 13:00:34,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 13:00:35,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:35,048 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash 740763177, now seen corresponding path program 1 times [2021-12-21 13:00:35,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:35,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161760176] [2021-12-21 13:00:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:35,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:00:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 13:00:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:00:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:00:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:00:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:00:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:00:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 13:00:35,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:35,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161760176] [2021-12-21 13:00:35,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161760176] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:35,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385323645] [2021-12-21 13:00:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:35,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:35,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:35,182 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:35,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 13:00:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 13:00:35,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:00:35,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:35,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385323645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:35,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:35,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-21 13:00:35,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742505956] [2021-12-21 13:00:35,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:35,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:00:35,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:35,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:00:35,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:00:35,558 INFO L87 Difference]: Start difference. First operand 345 states and 528 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:35,603 INFO L93 Difference]: Finished difference Result 681 states and 1046 transitions. [2021-12-21 13:00:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:00:35,606 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2021-12-21 13:00:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:35,609 INFO L225 Difference]: With dead ends: 681 [2021-12-21 13:00:35,610 INFO L226 Difference]: Without dead ends: 347 [2021-12-21 13:00:35,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:35,611 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 125 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:35,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1588 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-21 13:00:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-12-21 13:00:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 276 states have (on average 1.536231884057971) internal successors, (424), 278 states have internal predecessors, (424), 53 states have call successors, (53), 16 states have call predecessors, (53), 17 states have return successors, (54), 52 states have call predecessors, (54), 52 states have call successors, (54) [2021-12-21 13:00:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 531 transitions. [2021-12-21 13:00:35,625 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 531 transitions. Word has length 112 [2021-12-21 13:00:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:35,625 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 531 transitions. [2021-12-21 13:00:35,626 INFO L471 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:35,626 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 531 transitions. [2021-12-21 13:00:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-21 13:00:35,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:35,628 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-21 13:00:35,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 13:00:35,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:35,847 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:35,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:35,847 INFO L85 PathProgramCache]: Analyzing trace with hash 704008068, now seen corresponding path program 1 times [2021-12-21 13:00:35,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:35,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341397515] [2021-12-21 13:00:35,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:35,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 13:00:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 13:00:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 13:00:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:00:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:00:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:00:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:00:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:00:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:00:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 13:00:36,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:36,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341397515] [2021-12-21 13:00:36,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341397515] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:36,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411889888] [2021-12-21 13:00:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:36,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:36,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:36,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:36,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 13:00:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 13:00:36,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:00:36,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:36,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411889888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:36,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:36,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 13:00:36,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522785687] [2021-12-21 13:00:36,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:36,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:00:36,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:36,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:00:36,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:00:36,391 INFO L87 Difference]: Start difference. First operand 347 states and 531 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:36,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:36,465 INFO L93 Difference]: Finished difference Result 683 states and 1051 transitions. [2021-12-21 13:00:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:00:36,465 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2021-12-21 13:00:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:36,467 INFO L225 Difference]: With dead ends: 683 [2021-12-21 13:00:36,467 INFO L226 Difference]: Without dead ends: 349 [2021-12-21 13:00:36,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 13:00:36,469 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 124 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:36,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1577 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:36,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-12-21 13:00:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2021-12-21 13:00:36,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 277 states have (on average 1.5342960288808665) internal successors, (425), 280 states have internal predecessors, (425), 53 states have call successors, (53), 16 states have call predecessors, (53), 18 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2021-12-21 13:00:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 537 transitions. [2021-12-21 13:00:36,483 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 537 transitions. Word has length 113 [2021-12-21 13:00:36,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:36,483 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 537 transitions. [2021-12-21 13:00:36,483 INFO L471 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:36,484 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 537 transitions. [2021-12-21 13:00:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-21 13:00:36,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:36,485 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:36,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 13:00:36,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:36,700 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash 857466609, now seen corresponding path program 1 times [2021-12-21 13:00:36,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:36,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946551759] [2021-12-21 13:00:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:36,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:00:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 13:00:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:00:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:00:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:00:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:00:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:00:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:00:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 13:00:36,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:36,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946551759] [2021-12-21 13:00:36,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946551759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:36,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:36,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:00:36,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577552538] [2021-12-21 13:00:36,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:36,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:00:36,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:36,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:00:36,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:36,801 INFO L87 Difference]: Start difference. First operand 349 states and 537 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:38,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:38,005 INFO L93 Difference]: Finished difference Result 843 states and 1294 transitions. [2021-12-21 13:00:38,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:00:38,005 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2021-12-21 13:00:38,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:38,009 INFO L225 Difference]: With dead ends: 843 [2021-12-21 13:00:38,009 INFO L226 Difference]: Without dead ends: 517 [2021-12-21 13:00:38,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:00:38,012 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1079 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:38,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 1595 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:00:38,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-12-21 13:00:38,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 349. [2021-12-21 13:00:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 277 states have (on average 1.5342960288808665) internal successors, (425), 280 states have internal predecessors, (425), 53 states have call successors, (53), 16 states have call predecessors, (53), 18 states have return successors, (58), 52 states have call predecessors, (58), 52 states have call successors, (58) [2021-12-21 13:00:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 536 transitions. [2021-12-21 13:00:38,041 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 536 transitions. Word has length 114 [2021-12-21 13:00:38,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:38,041 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 536 transitions. [2021-12-21 13:00:38,041 INFO L471 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 536 transitions. [2021-12-21 13:00:38,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-21 13:00:38,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:38,044 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:38,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:00:38,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash 748732846, now seen corresponding path program 2 times [2021-12-21 13:00:38,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:38,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018085945] [2021-12-21 13:00:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:38,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 13:00:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 13:00:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:00:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:00:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:00:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:00:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:00:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:00:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 13:00:38,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:38,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018085945] [2021-12-21 13:00:38,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018085945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:38,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:38,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:00:38,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762703759] [2021-12-21 13:00:38,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:38,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:00:38,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:00:38,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:38,145 INFO L87 Difference]: Start difference. First operand 349 states and 536 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:39,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:39,320 INFO L93 Difference]: Finished difference Result 845 states and 1297 transitions. [2021-12-21 13:00:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:00:39,321 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-12-21 13:00:39,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:39,323 INFO L225 Difference]: With dead ends: 845 [2021-12-21 13:00:39,324 INFO L226 Difference]: Without dead ends: 519 [2021-12-21 13:00:39,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:00:39,325 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1056 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:39,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 1609 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:00:39,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-12-21 13:00:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 351. [2021-12-21 13:00:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 278 states have (on average 1.5323741007194245) internal successors, (426), 282 states have internal predecessors, (426), 53 states have call successors, (53), 16 states have call predecessors, (53), 19 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2021-12-21 13:00:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 539 transitions. [2021-12-21 13:00:39,342 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 539 transitions. Word has length 115 [2021-12-21 13:00:39,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:39,343 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 539 transitions. [2021-12-21 13:00:39,343 INFO L471 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 539 transitions. [2021-12-21 13:00:39,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-21 13:00:39,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:39,345 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:39,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:00:39,345 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:39,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1183302676, now seen corresponding path program 1 times [2021-12-21 13:00:39,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:39,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934455853] [2021-12-21 13:00:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:39,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:00:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:00:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:00:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:00:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:00:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:00:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:00:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 13:00:39,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:39,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934455853] [2021-12-21 13:00:39,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934455853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:39,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:39,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:00:39,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347113258] [2021-12-21 13:00:39,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:39,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:00:39,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:00:39,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:00:39,452 INFO L87 Difference]: Start difference. First operand 351 states and 539 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, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:00:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:41,081 INFO L93 Difference]: Finished difference Result 843 states and 1292 transitions. [2021-12-21 13:00:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:00:41,082 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, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2021-12-21 13:00:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:41,084 INFO L225 Difference]: With dead ends: 843 [2021-12-21 13:00:41,084 INFO L226 Difference]: Without dead ends: 519 [2021-12-21 13:00:41,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:00:41,086 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1171 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 3186 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:41,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 2046 Invalid, 3598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3186 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 13:00:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-12-21 13:00:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 351. [2021-12-21 13:00:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 278 states have (on average 1.5323741007194245) internal successors, (426), 282 states have internal predecessors, (426), 53 states have call successors, (53), 16 states have call predecessors, (53), 19 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2021-12-21 13:00:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 538 transitions. [2021-12-21 13:00:41,102 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 538 transitions. Word has length 116 [2021-12-21 13:00:41,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:41,103 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 538 transitions. [2021-12-21 13:00:41,103 INFO L471 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, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:00:41,103 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 538 transitions. [2021-12-21 13:00:41,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 13:00:41,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:41,104 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:41,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:00:41,105 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:41,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:41,105 INFO L85 PathProgramCache]: Analyzing trace with hash 158463807, now seen corresponding path program 2 times [2021-12-21 13:00:41,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:41,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620916910] [2021-12-21 13:00:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:41,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 13:00:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 13:00:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:00:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:00:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:00:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:00:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:00:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 13:00:41,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:41,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620916910] [2021-12-21 13:00:41,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620916910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:41,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:41,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:00:41,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887890475] [2021-12-21 13:00:41,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:41,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:00:41,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:00:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:00:41,230 INFO L87 Difference]: Start difference. First operand 351 states and 538 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, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:00:42,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:42,854 INFO L93 Difference]: Finished difference Result 845 states and 1298 transitions. [2021-12-21 13:00:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:00:42,855 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, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2021-12-21 13:00:42,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:42,857 INFO L225 Difference]: With dead ends: 845 [2021-12-21 13:00:42,857 INFO L226 Difference]: Without dead ends: 521 [2021-12-21 13:00:42,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:00:42,858 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1204 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 3091 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 3502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 3091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:42,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 2029 Invalid, 3502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 3091 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 13:00:42,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-12-21 13:00:42,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 353. [2021-12-21 13:00:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 279 states have (on average 1.5304659498207884) internal successors, (427), 284 states have internal predecessors, (427), 53 states have call successors, (53), 16 states have call predecessors, (53), 20 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2021-12-21 13:00:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 544 transitions. [2021-12-21 13:00:42,880 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 544 transitions. Word has length 117 [2021-12-21 13:00:42,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:42,880 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 544 transitions. [2021-12-21 13:00:42,881 INFO L471 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, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:00:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 544 transitions. [2021-12-21 13:00:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 13:00:42,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:42,883 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:42,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:00:42,883 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:42,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1021608935, now seen corresponding path program 1 times [2021-12-21 13:00:42,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:42,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939480742] [2021-12-21 13:00:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:42,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:00:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:00:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:00:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:00:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:00:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:00:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:00:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:42,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:42,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939480742] [2021-12-21 13:00:42,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939480742] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:42,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150826233] [2021-12-21 13:00:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:42,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:42,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:42,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:42,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 13:00:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:00:43,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:43,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:00:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:43,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150826233] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:00:43,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:00:43,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-21 13:00:43,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796726654] [2021-12-21 13:00:43,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:00:43,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:00:43,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:43,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:00:43,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:00:43,536 INFO L87 Difference]: Start difference. First operand 353 states and 544 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (32), 6 states have call predecessors, (32), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 13:00:45,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:45,017 INFO L93 Difference]: Finished difference Result 1014 states and 1626 transitions. [2021-12-21 13:00:45,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 13:00:45,017 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (32), 6 states have call predecessors, (32), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 118 [2021-12-21 13:00:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:45,022 INFO L225 Difference]: With dead ends: 1014 [2021-12-21 13:00:45,022 INFO L226 Difference]: Without dead ends: 873 [2021-12-21 13:00:45,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:00:45,024 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 1288 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:45,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 2044 Invalid, 2581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 13:00:45,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-12-21 13:00:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 681. [2021-12-21 13:00:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 543 states have (on average 1.5930018416206262) internal successors, (865), 548 states have internal predecessors, (865), 117 states have call successors, (117), 16 states have call predecessors, (117), 20 states have return successors, (138), 116 states have call predecessors, (138), 116 states have call successors, (138) [2021-12-21 13:00:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1120 transitions. [2021-12-21 13:00:45,073 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1120 transitions. Word has length 118 [2021-12-21 13:00:45,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:45,074 INFO L470 AbstractCegarLoop]: Abstraction has 681 states and 1120 transitions. [2021-12-21 13:00:45,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (32), 6 states have call predecessors, (32), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 13:00:45,074 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1120 transitions. [2021-12-21 13:00:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 13:00:45,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:45,077 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:45,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 13:00:45,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:45,295 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:45,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:45,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1951274134, now seen corresponding path program 1 times [2021-12-21 13:00:45,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:45,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129875100] [2021-12-21 13:00:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:45,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:00:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:00:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:00:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:00:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:00:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:00:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:00:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:45,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:45,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129875100] [2021-12-21 13:00:45,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129875100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:45,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:45,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:45,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825801547] [2021-12-21 13:00:45,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:45,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:45,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:45,399 INFO L87 Difference]: Start difference. First operand 681 states and 1120 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:46,332 INFO L93 Difference]: Finished difference Result 1795 states and 2997 transitions. [2021-12-21 13:00:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:46,332 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2021-12-21 13:00:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:46,337 INFO L225 Difference]: With dead ends: 1795 [2021-12-21 13:00:46,338 INFO L226 Difference]: Without dead ends: 1182 [2021-12-21 13:00:46,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:46,340 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1097 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:46,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 1358 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:00:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2021-12-21 13:00:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1006. [2021-12-21 13:00:46,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 804 states have (on average 1.6044776119402986) internal successors, (1290), 809 states have internal predecessors, (1290), 181 states have call successors, (181), 16 states have call predecessors, (181), 20 states have return successors, (212), 180 states have call predecessors, (212), 180 states have call successors, (212) [2021-12-21 13:00:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1683 transitions. [2021-12-21 13:00:46,384 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1683 transitions. Word has length 124 [2021-12-21 13:00:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:46,384 INFO L470 AbstractCegarLoop]: Abstraction has 1006 states and 1683 transitions. [2021-12-21 13:00:46,385 INFO L471 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1683 transitions. [2021-12-21 13:00:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-21 13:00:46,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:46,389 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:46,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:00:46,389 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:46,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash 681143198, now seen corresponding path program 1 times [2021-12-21 13:00:46,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:46,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049314986] [2021-12-21 13:00:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:46,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:00:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:00:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:00:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:00:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:00:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:00:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:00:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:46,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:46,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049314986] [2021-12-21 13:00:46,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049314986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:46,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:46,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:46,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353295860] [2021-12-21 13:00:46,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:46,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:46,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:46,475 INFO L87 Difference]: Start difference. First operand 1006 states and 1683 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:47,430 INFO L93 Difference]: Finished difference Result 2575 states and 4346 transitions. [2021-12-21 13:00:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:47,431 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2021-12-21 13:00:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:47,437 INFO L225 Difference]: With dead ends: 2575 [2021-12-21 13:00:47,438 INFO L226 Difference]: Without dead ends: 1690 [2021-12-21 13:00:47,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:47,440 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 1078 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:47,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 1304 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:00:47,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-12-21 13:00:47,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1514. [2021-12-21 13:00:47,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1217 states have (on average 1.6113393590797043) internal successors, (1961), 1222 states have internal predecessors, (1961), 276 states have call successors, (276), 16 states have call predecessors, (276), 20 states have return successors, (307), 275 states have call predecessors, (307), 275 states have call successors, (307) [2021-12-21 13:00:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2544 transitions. [2021-12-21 13:00:47,507 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2544 transitions. Word has length 125 [2021-12-21 13:00:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:47,507 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 2544 transitions. [2021-12-21 13:00:47,507 INFO L471 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:47,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2544 transitions. [2021-12-21 13:00:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-21 13:00:47,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:47,514 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:47,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:00:47,514 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash -64126520, now seen corresponding path program 1 times [2021-12-21 13:00:47,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:47,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23943711] [2021-12-21 13:00:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:47,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:00:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:00:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:00:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:00:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:00:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:00:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:00:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:47,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:47,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23943711] [2021-12-21 13:00:47,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23943711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:47,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:47,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:47,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068506942] [2021-12-21 13:00:47,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:47,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:47,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:47,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:47,590 INFO L87 Difference]: Start difference. First operand 1514 states and 2544 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:48,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:48,564 INFO L93 Difference]: Finished difference Result 3727 states and 6355 transitions. [2021-12-21 13:00:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:48,565 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2021-12-21 13:00:48,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:48,575 INFO L225 Difference]: With dead ends: 3727 [2021-12-21 13:00:48,575 INFO L226 Difference]: Without dead ends: 2459 [2021-12-21 13:00:48,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:48,579 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 1068 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:48,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 1320 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:00:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2021-12-21 13:00:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2283. [2021-12-21 13:00:48,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 1863 states have (on average 1.6167471819645733) internal successors, (3012), 1868 states have internal predecessors, (3012), 399 states have call successors, (399), 16 states have call predecessors, (399), 20 states have return successors, (446), 398 states have call predecessors, (446), 398 states have call successors, (446) [2021-12-21 13:00:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3857 transitions. [2021-12-21 13:00:48,669 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3857 transitions. Word has length 126 [2021-12-21 13:00:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:48,670 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 3857 transitions. [2021-12-21 13:00:48,670 INFO L471 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3857 transitions. [2021-12-21 13:00:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-21 13:00:48,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:48,679 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:48,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:00:48,679 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:48,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:48,679 INFO L85 PathProgramCache]: Analyzing trace with hash -793686243, now seen corresponding path program 1 times [2021-12-21 13:00:48,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:48,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844281916] [2021-12-21 13:00:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:48,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:00:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:00:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:00:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:00:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:00:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 13:00:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:00:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:48,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:48,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844281916] [2021-12-21 13:00:48,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844281916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:48,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:48,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:48,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531198078] [2021-12-21 13:00:48,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:48,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:48,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:48,786 INFO L87 Difference]: Start difference. First operand 2283 states and 3857 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:49,825 INFO L93 Difference]: Finished difference Result 5521 states and 9489 transitions. [2021-12-21 13:00:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:49,825 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2021-12-21 13:00:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:49,857 INFO L225 Difference]: With dead ends: 5521 [2021-12-21 13:00:49,857 INFO L226 Difference]: Without dead ends: 3688 [2021-12-21 13:00:49,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:49,863 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 1070 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:49,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 1321 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:00:49,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3688 states. [2021-12-21 13:00:50,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3688 to 3512. [2021-12-21 13:00:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3512 states, 2913 states have (on average 1.619979402677652) internal successors, (4719), 2918 states have internal predecessors, (4719), 578 states have call successors, (578), 16 states have call predecessors, (578), 20 states have return successors, (651), 577 states have call predecessors, (651), 577 states have call successors, (651) [2021-12-21 13:00:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3512 states to 3512 states and 5948 transitions. [2021-12-21 13:00:50,062 INFO L78 Accepts]: Start accepts. Automaton has 3512 states and 5948 transitions. Word has length 127 [2021-12-21 13:00:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:50,063 INFO L470 AbstractCegarLoop]: Abstraction has 3512 states and 5948 transitions. [2021-12-21 13:00:50,063 INFO L471 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3512 states and 5948 transitions. [2021-12-21 13:00:50,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-21 13:00:50,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:50,073 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:50,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:00:50,073 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1926920396, now seen corresponding path program 1 times [2021-12-21 13:00:50,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:50,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715665565] [2021-12-21 13:00:50,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:50,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:00:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:00:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:00:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:00:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:00:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:00:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:00:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:50,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:50,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715665565] [2021-12-21 13:00:50,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715665565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:50,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:50,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:50,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896091979] [2021-12-21 13:00:50,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:50,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:50,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:50,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:50,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:50,162 INFO L87 Difference]: Start difference. First operand 3512 states and 5948 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:51,194 INFO L93 Difference]: Finished difference Result 8469 states and 14636 transitions. [2021-12-21 13:00:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:51,195 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2021-12-21 13:00:51,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:51,218 INFO L225 Difference]: With dead ends: 8469 [2021-12-21 13:00:51,218 INFO L226 Difference]: Without dead ends: 5719 [2021-12-21 13:00:51,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:51,227 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1088 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:51,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1351 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:00:51,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5719 states. [2021-12-21 13:00:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5719 to 5543. [2021-12-21 13:00:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5543 states, 4568 states have (on average 1.6136164623467601) internal successors, (7371), 4573 states have internal predecessors, (7371), 954 states have call successors, (954), 16 states have call predecessors, (954), 20 states have return successors, (1071), 953 states have call predecessors, (1071), 953 states have call successors, (1071) [2021-12-21 13:00:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5543 states to 5543 states and 9396 transitions. [2021-12-21 13:00:51,484 INFO L78 Accepts]: Start accepts. Automaton has 5543 states and 9396 transitions. Word has length 128 [2021-12-21 13:00:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:51,485 INFO L470 AbstractCegarLoop]: Abstraction has 5543 states and 9396 transitions. [2021-12-21 13:00:51,485 INFO L471 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5543 states and 9396 transitions. [2021-12-21 13:00:51,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-21 13:00:51,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:51,521 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:51,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:00:51,521 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:51,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1737890841, now seen corresponding path program 1 times [2021-12-21 13:00:51,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:51,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284422142] [2021-12-21 13:00:51,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:51,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:00:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:00:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:00:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:00:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:00:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:00:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:00:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:51,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:51,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284422142] [2021-12-21 13:00:51,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284422142] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:51,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:51,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:51,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096848899] [2021-12-21 13:00:51,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:51,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:51,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:51,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:51,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:51,609 INFO L87 Difference]: Start difference. First operand 5543 states and 9396 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:52,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:52,732 INFO L93 Difference]: Finished difference Result 13806 states and 23857 transitions. [2021-12-21 13:00:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:52,733 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2021-12-21 13:00:52,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:52,782 INFO L225 Difference]: With dead ends: 13806 [2021-12-21 13:00:52,782 INFO L226 Difference]: Without dead ends: 9402 [2021-12-21 13:00:52,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:52,794 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1059 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:52,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 1330 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:00:52,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9402 states. [2021-12-21 13:00:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9402 to 9226. [2021-12-21 13:00:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9226 states, 7645 states have (on average 1.6111183780248528) internal successors, (12317), 7650 states have internal predecessors, (12317), 1560 states have call successors, (1560), 16 states have call predecessors, (1560), 20 states have return successors, (1755), 1559 states have call predecessors, (1755), 1559 states have call successors, (1755) [2021-12-21 13:00:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9226 states to 9226 states and 15632 transitions. [2021-12-21 13:00:53,230 INFO L78 Accepts]: Start accepts. Automaton has 9226 states and 15632 transitions. Word has length 129 [2021-12-21 13:00:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:53,230 INFO L470 AbstractCegarLoop]: Abstraction has 9226 states and 15632 transitions. [2021-12-21 13:00:53,230 INFO L471 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 9226 states and 15632 transitions. [2021-12-21 13:00:53,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 13:00:53,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:53,249 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:53,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:00:53,250 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:53,250 INFO L85 PathProgramCache]: Analyzing trace with hash 294042718, now seen corresponding path program 1 times [2021-12-21 13:00:53,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:53,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20059802] [2021-12-21 13:00:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:53,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:00:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:00:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:00:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:00:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:00:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:00:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 13:00:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:53,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:53,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20059802] [2021-12-21 13:00:53,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20059802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:53,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:53,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:53,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907181322] [2021-12-21 13:00:53,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:53,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:53,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:53,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:53,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:53,329 INFO L87 Difference]: Start difference. First operand 9226 states and 15632 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:54,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:54,634 INFO L93 Difference]: Finished difference Result 23990 states and 41403 transitions. [2021-12-21 13:00:54,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:54,635 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2021-12-21 13:00:54,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:54,698 INFO L225 Difference]: With dead ends: 23990 [2021-12-21 13:00:54,699 INFO L226 Difference]: Without dead ends: 16355 [2021-12-21 13:00:54,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:54,722 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1041 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:54,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 1361 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:00:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16355 states. [2021-12-21 13:00:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16355 to 16179. [2021-12-21 13:00:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16179 states, 13395 states have (on average 1.6020156774916015) internal successors, (21459), 13400 states have internal predecessors, (21459), 2763 states have call successors, (2763), 16 states have call predecessors, (2763), 20 states have return successors, (3102), 2762 states have call predecessors, (3102), 2762 states have call successors, (3102) [2021-12-21 13:00:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16179 states to 16179 states and 27324 transitions. [2021-12-21 13:00:55,433 INFO L78 Accepts]: Start accepts. Automaton has 16179 states and 27324 transitions. Word has length 130 [2021-12-21 13:00:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:55,433 INFO L470 AbstractCegarLoop]: Abstraction has 16179 states and 27324 transitions. [2021-12-21 13:00:55,433 INFO L471 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:55,433 INFO L276 IsEmpty]: Start isEmpty. Operand 16179 states and 27324 transitions. [2021-12-21 13:00:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-21 13:00:55,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:55,460 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:55,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:00:55,460 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:55,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:55,460 INFO L85 PathProgramCache]: Analyzing trace with hash -624018824, now seen corresponding path program 1 times [2021-12-21 13:00:55,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:55,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084971236] [2021-12-21 13:00:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:55,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:00:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:00:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:00:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:00:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:00:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:00:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 13:00:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:55,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:55,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084971236] [2021-12-21 13:00:55,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084971236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:55,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:55,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:55,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120566358] [2021-12-21 13:00:55,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:55,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:55,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:55,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:55,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:55,553 INFO L87 Difference]: Start difference. First operand 16179 states and 27324 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:57,366 INFO L93 Difference]: Finished difference Result 42956 states and 74002 transitions. [2021-12-21 13:00:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:57,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2021-12-21 13:00:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:57,564 INFO L225 Difference]: With dead ends: 42956 [2021-12-21 13:00:57,564 INFO L226 Difference]: Without dead ends: 29010 [2021-12-21 13:00:57,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:57,594 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1060 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:57,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 1325 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:00:57,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29010 states. [2021-12-21 13:00:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29010 to 28834. [2021-12-21 13:00:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28834 states, 24011 states have (on average 1.5977260422306443) internal successors, (38363), 24016 states have internal predecessors, (38363), 4802 states have call successors, (4802), 16 states have call predecessors, (4802), 20 states have return successors, (5415), 4801 states have call predecessors, (5415), 4801 states have call successors, (5415) [2021-12-21 13:00:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28834 states to 28834 states and 48580 transitions. [2021-12-21 13:00:58,961 INFO L78 Accepts]: Start accepts. Automaton has 28834 states and 48580 transitions. Word has length 131 [2021-12-21 13:00:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:58,961 INFO L470 AbstractCegarLoop]: Abstraction has 28834 states and 48580 transitions. [2021-12-21 13:00:58,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 28834 states and 48580 transitions. [2021-12-21 13:00:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-21 13:00:58,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:58,987 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:58,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:00:58,987 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:58,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1114295804, now seen corresponding path program 1 times [2021-12-21 13:00:58,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:58,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478819559] [2021-12-21 13:00:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:58,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:00:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:00:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:00:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:00:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:00:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:00:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 13:00:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:00:59,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:59,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478819559] [2021-12-21 13:00:59,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478819559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:59,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:59,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:59,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424437392] [2021-12-21 13:00:59,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:59,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:59,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:59,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:59,072 INFO L87 Difference]: Start difference. First operand 28834 states and 48580 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:01,495 INFO L93 Difference]: Finished difference Result 78718 states and 134761 transitions. [2021-12-21 13:01:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:01,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-12-21 13:01:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:01,687 INFO L225 Difference]: With dead ends: 78718 [2021-12-21 13:01:01,687 INFO L226 Difference]: Without dead ends: 52889 [2021-12-21 13:01:01,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:01,754 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 1056 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:01,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 1338 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:01:01,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52889 states. [2021-12-21 13:01:04,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52889 to 52713. [2021-12-21 13:01:04,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52713 states, 44175 states have (on average 1.5921222410865874) internal successors, (70332), 44180 states have internal predecessors, (70332), 8517 states have call successors, (8517), 16 states have call predecessors, (8517), 20 states have return successors, (9662), 8516 states have call predecessors, (9662), 8516 states have call successors, (9662) [2021-12-21 13:01:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52713 states to 52713 states and 88511 transitions. [2021-12-21 13:01:04,260 INFO L78 Accepts]: Start accepts. Automaton has 52713 states and 88511 transitions. Word has length 132 [2021-12-21 13:01:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:04,261 INFO L470 AbstractCegarLoop]: Abstraction has 52713 states and 88511 transitions. [2021-12-21 13:01:04,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:04,261 INFO L276 IsEmpty]: Start isEmpty. Operand 52713 states and 88511 transitions. [2021-12-21 13:01:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-21 13:01:04,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:04,295 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:04,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 13:01:04,296 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:04,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:04,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1436802920, now seen corresponding path program 1 times [2021-12-21 13:01:04,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:04,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709842773] [2021-12-21 13:01:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:04,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:01:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:01:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:01:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:01:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:01:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:01:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 13:01:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:04,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:04,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709842773] [2021-12-21 13:01:04,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709842773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:04,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:04,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:04,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206063490] [2021-12-21 13:01:04,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:04,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:04,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:04,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:04,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:04,378 INFO L87 Difference]: Start difference. First operand 52713 states and 88511 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:08,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:08,176 INFO L93 Difference]: Finished difference Result 98489 states and 168948 transitions. [2021-12-21 13:01:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:08,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2021-12-21 13:01:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:08,543 INFO L225 Difference]: With dead ends: 98489 [2021-12-21 13:01:08,544 INFO L226 Difference]: Without dead ends: 98348 [2021-12-21 13:01:08,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:08,598 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1061 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:08,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 1320 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:01:08,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98348 states. [2021-12-21 13:01:12,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98348 to 98172. [2021-12-21 13:01:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98172 states, 82835 states have (on average 1.585102915434297) internal successors, (131302), 82840 states have internal predecessors, (131302), 15316 states have call successors, (15316), 16 states have call predecessors, (15316), 20 states have return successors, (17507), 15315 states have call predecessors, (17507), 15315 states have call successors, (17507) [2021-12-21 13:01:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98172 states to 98172 states and 164125 transitions. [2021-12-21 13:01:13,216 INFO L78 Accepts]: Start accepts. Automaton has 98172 states and 164125 transitions. Word has length 133 [2021-12-21 13:01:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:13,216 INFO L470 AbstractCegarLoop]: Abstraction has 98172 states and 164125 transitions. [2021-12-21 13:01:13,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 98172 states and 164125 transitions. [2021-12-21 13:01:13,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 13:01:13,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:13,262 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:13,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:01:13,263 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:13,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:13,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1777075171, now seen corresponding path program 1 times [2021-12-21 13:01:13,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:13,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813715391] [2021-12-21 13:01:13,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:13,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:01:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:01:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:01:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:01:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:01:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:01:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:01:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 13:01:13,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813715391] [2021-12-21 13:01:13,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813715391] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:01:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496920702] [2021-12-21 13:01:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:13,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:01:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:01:13,358 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) [2021-12-21 13:01:13,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 13:01:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 13:01:13,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:01:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 13:01:13,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:01:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 13:01:14,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496920702] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:01:14,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:01:14,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2021-12-21 13:01:14,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466680576] [2021-12-21 13:01:14,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:01:14,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 13:01:14,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:14,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 13:01:14,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-12-21 13:01:14,103 INFO L87 Difference]: Start difference. First operand 98172 states and 164125 transitions. Second operand has 23 states, 23 states have (on average 9.652173913043478) internal successors, (222), 18 states have internal predecessors, (222), 4 states have call successors, (42), 10 states have call predecessors, (42), 8 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-21 13:01:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:25,093 INFO L93 Difference]: Finished difference Result 197054 states and 340208 transitions. [2021-12-21 13:01:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-21 13:01:25,094 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.652173913043478) internal successors, (222), 18 states have internal predecessors, (222), 4 states have call successors, (42), 10 states have call predecessors, (42), 8 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) Word has length 134 [2021-12-21 13:01:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:26,127 INFO L225 Difference]: With dead ends: 197054 [2021-12-21 13:01:26,127 INFO L226 Difference]: Without dead ends: 196919 [2021-12-21 13:01:26,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=916, Invalid=4196, Unknown=0, NotChecked=0, Total=5112 [2021-12-21 13:01:26,209 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 4143 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 8384 mSolverCounterSat, 1681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4143 SdHoareTripleChecker+Valid, 3661 SdHoareTripleChecker+Invalid, 10065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1681 IncrementalHoareTripleChecker+Valid, 8384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:26,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4143 Valid, 3661 Invalid, 10065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1681 Valid, 8384 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-21 13:01:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196919 states.