./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec0_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_product22.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 646f5b113c7a3ad2f4a2522272ad1b8889776081b2b5bc43fffe0e887ddc48f7 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:45:15,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:45:15,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:45:15,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:45:15,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:45:15,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:45:16,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:45:16,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:45:16,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:45:16,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:45:16,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:45:16,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:45:16,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:45:16,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:45:16,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:45:16,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:45:16,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:45:16,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:45:16,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:45:16,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:45:16,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:45:16,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:45:16,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:45:16,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:45:16,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:45:16,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:45:16,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:45:16,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:45:16,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:45:16,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:45:16,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:45:16,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:45:16,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:45:16,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:45:16,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:45:16,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:45:16,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:45:16,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:45:16,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:45:16,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:45:16,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:45:16,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:45:16,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:45:16,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:45:16,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:45:16,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:45:16,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:45:16,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:45:16,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:45:16,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:45:16,063 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:45:16,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:45:16,064 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:45:16,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:45:16,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:45:16,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:45:16,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:45:16,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:45:16,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:45:16,065 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:45:16,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:45:16,066 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:45:16,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:45:16,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:45:16,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:45:16,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:45:16,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:45:16,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:45:16,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:45:16,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:45:16,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:45:16,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:45:16,069 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:45:16,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:45:16,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:45:16,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:45:16,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 646f5b113c7a3ad2f4a2522272ad1b8889776081b2b5bc43fffe0e887ddc48f7 [2021-12-16 00:45:16,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:45:16,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:45:16,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:45:16,298 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:45:16,298 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:45:16,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec0_product22.cil.c [2021-12-16 00:45:16,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b001de27/bebcf99a617140b0b0191939c27594a3/FLAGcc1361d5c [2021-12-16 00:45:16,781 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:45:16,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product22.cil.c [2021-12-16 00:45:16,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b001de27/bebcf99a617140b0b0191939c27594a3/FLAGcc1361d5c [2021-12-16 00:45:16,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b001de27/bebcf99a617140b0b0191939c27594a3 [2021-12-16 00:45:16,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:45:16,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:45:16,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:45:16,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:45:16,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:45:16,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:45:16" (1/1) ... [2021-12-16 00:45:16,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ddefae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:16, skipping insertion in model container [2021-12-16 00:45:16,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:45:16" (1/1) ... [2021-12-16 00:45:16,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:45:16,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:45:17,032 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_product22.cil.c[4724,4737] [2021-12-16 00:45:17,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:45:17,253 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:45:17,264 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_product22.cil.c[4724,4737] [2021-12-16 00:45:17,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:45:17,377 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:45:17,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17 WrapperNode [2021-12-16 00:45:17,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:45:17,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:45:17,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:45:17,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:45:17,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (1/1) ... [2021-12-16 00:45:17,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (1/1) ... [2021-12-16 00:45:17,465 INFO L137 Inliner]: procedures = 128, calls = 205, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1008 [2021-12-16 00:45:17,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:45:17,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:45:17,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:45:17,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:45:17,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (1/1) ... [2021-12-16 00:45:17,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (1/1) ... [2021-12-16 00:45:17,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (1/1) ... [2021-12-16 00:45:17,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (1/1) ... [2021-12-16 00:45:17,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (1/1) ... [2021-12-16 00:45:17,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (1/1) ... [2021-12-16 00:45:17,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (1/1) ... [2021-12-16 00:45:17,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:45:17,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:45:17,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:45:17,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:45:17,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (1/1) ... [2021-12-16 00:45:17,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:45:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:17,581 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) [2021-12-16 00:45:17,621 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 [2021-12-16 00:45:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-16 00:45:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-16 00:45:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-16 00:45:17,636 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-16 00:45:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-16 00:45:17,636 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-16 00:45:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-16 00:45:17,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-16 00:45:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-16 00:45:17,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-16 00:45:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-16 00:45:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-16 00:45:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-16 00:45:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-16 00:45:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-16 00:45:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-16 00:45:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-16 00:45:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-16 00:45:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-16 00:45:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-16 00:45:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-16 00:45:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-16 00:45:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-16 00:45:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:45:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-16 00:45:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-16 00:45:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-16 00:45:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-16 00:45:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-16 00:45:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-16 00:45:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-16 00:45:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-16 00:45:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-16 00:45:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-16 00:45:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-16 00:45:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-16 00:45:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-16 00:45:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-16 00:45:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:45:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-16 00:45:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-16 00:45:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:45:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:45:17,782 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:45:17,784 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:45:18,232 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:45:18,238 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:45:18,238 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:45:18,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:45:18 BoogieIcfgContainer [2021-12-16 00:45:18,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:45:18,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:45:18,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:45:18,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:45:18,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:45:16" (1/3) ... [2021-12-16 00:45:18,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9bdeb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:45:18, skipping insertion in model container [2021-12-16 00:45:18,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:45:17" (2/3) ... [2021-12-16 00:45:18,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9bdeb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:45:18, skipping insertion in model container [2021-12-16 00:45:18,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:45:18" (3/3) ... [2021-12-16 00:45:18,246 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product22.cil.c [2021-12-16 00:45:18,249 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:45:18,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:45:18,278 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:45:18,283 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 [2021-12-16 00:45:18,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:45:18,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 251 states have (on average 1.5258964143426295) internal successors, (383), 255 states have internal predecessors, (383), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-16 00:45:18,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-16 00:45:18,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:18,310 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:18,311 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:18,314 INFO L85 PathProgramCache]: Analyzing trace with hash 524958238, now seen corresponding path program 1 times [2021-12-16 00:45:18,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:18,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245062826] [2021-12-16 00:45:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:18,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:45:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:45:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:45:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 00:45:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 00:45:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:45:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:45:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:45:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:45:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:45:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:45:18,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:18,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245062826] [2021-12-16 00:45:18,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245062826] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:18,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235077633] [2021-12-16 00:45:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:18,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:18,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:18,742 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) [2021-12-16 00:45:18,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 00:45:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:18,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 00:45:18,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:45:19,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:19,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235077633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:19,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:19,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-16 00:45:19,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751444894] [2021-12-16 00:45:19,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:19,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 00:45:19,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 00:45:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:45:19,219 INFO L87 Difference]: Start difference. First operand has 322 states, 251 states have (on average 1.5258964143426295) internal successors, (383), 255 states have internal predecessors, (383), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:19,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:19,278 INFO L93 Difference]: Finished difference Result 485 states and 712 transitions. [2021-12-16 00:45:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 00:45:19,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2021-12-16 00:45:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:19,296 INFO L225 Difference]: With dead ends: 485 [2021-12-16 00:45:19,296 INFO L226 Difference]: Without dead ends: 315 [2021-12-16 00:45:19,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:45:19,305 INFO L933 BasicCegarLoop]: 479 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, 479 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 [2021-12-16 00:45:19,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:45:19,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-16 00:45:19,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-16 00:45:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 245 states have (on average 1.5183673469387755) internal successors, (372), 248 states have internal predecessors, (372), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-16 00:45:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 471 transitions. [2021-12-16 00:45:19,372 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 471 transitions. Word has length 119 [2021-12-16 00:45:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:19,375 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 471 transitions. [2021-12-16 00:45:19,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:19,376 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 471 transitions. [2021-12-16 00:45:19,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-16 00:45:19,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:19,385 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:19,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 00:45:19,598 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 [2021-12-16 00:45:19,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:19,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:19,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1883674606, now seen corresponding path program 1 times [2021-12-16 00:45:19,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:19,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147268747] [2021-12-16 00:45:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:19,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:45:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:45:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:45:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 00:45:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 00:45:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:45:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:45:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:45:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:45:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:45:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:45:19,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:19,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147268747] [2021-12-16 00:45:19,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147268747] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:19,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240281987] [2021-12-16 00:45:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:19,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:19,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:19,774 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) [2021-12-16 00:45:19,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 00:45:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 00:45:20,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:45:20,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:20,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240281987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:20,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:20,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:45:20,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952099630] [2021-12-16 00:45:20,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:20,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:45:20,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:20,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:45:20,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:45:20,155 INFO L87 Difference]: Start difference. First operand 315 states and 471 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:20,172 INFO L93 Difference]: Finished difference Result 475 states and 693 transitions. [2021-12-16 00:45:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:45:20,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2021-12-16 00:45:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:20,175 INFO L225 Difference]: With dead ends: 475 [2021-12-16 00:45:20,175 INFO L226 Difference]: Without dead ends: 318 [2021-12-16 00:45:20,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:45:20,176 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 1 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 936 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 [2021-12-16 00:45:20,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 936 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:45:20,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-12-16 00:45:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2021-12-16 00:45:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 247 states have (on average 1.51417004048583) internal successors, (374), 250 states have internal predecessors, (374), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-16 00:45:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 473 transitions. [2021-12-16 00:45:20,188 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 473 transitions. Word has length 120 [2021-12-16 00:45:20,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:20,189 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 473 transitions. [2021-12-16 00:45:20,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 473 transitions. [2021-12-16 00:45:20,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-16 00:45:20,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:20,190 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:20,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 00:45:20,405 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 [2021-12-16 00:45:20,405 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:20,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash -932218519, now seen corresponding path program 1 times [2021-12-16 00:45:20,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:20,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565982655] [2021-12-16 00:45:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:20,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:45:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:45:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:45:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 00:45:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:45:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:45:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:45:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:45:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:45:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:45:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:45:20,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:20,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565982655] [2021-12-16 00:45:20,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565982655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:20,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338220249] [2021-12-16 00:45:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:20,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:20,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:20,500 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) [2021-12-16 00:45:20,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 00:45:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:20,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:45:20,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 00:45:20,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:20,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338220249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:20,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:20,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-16 00:45:20,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85437126] [2021-12-16 00:45:20,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:20,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:45:20,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:45:20,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:45:20,887 INFO L87 Difference]: Start difference. First operand 317 states and 473 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:20,909 INFO L93 Difference]: Finished difference Result 669 states and 1013 transitions. [2021-12-16 00:45:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:45:20,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2021-12-16 00:45:20,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:20,912 INFO L225 Difference]: With dead ends: 669 [2021-12-16 00:45:20,912 INFO L226 Difference]: Without dead ends: 379 [2021-12-16 00:45:20,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:45:20,928 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 115 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 914 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 [2021-12-16 00:45:20,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 914 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:45:20,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-12-16 00:45:20,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 371. [2021-12-16 00:45:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 290 states have (on average 1.5310344827586206) internal successors, (444), 293 states have internal predecessors, (444), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-16 00:45:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 565 transitions. [2021-12-16 00:45:20,952 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 565 transitions. Word has length 129 [2021-12-16 00:45:20,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:20,955 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 565 transitions. [2021-12-16 00:45:20,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 565 transitions. [2021-12-16 00:45:20,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 00:45:20,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:20,958 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:20,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 00:45:21,175 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 [2021-12-16 00:45:21,176 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:21,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:21,176 INFO L85 PathProgramCache]: Analyzing trace with hash -941355877, now seen corresponding path program 1 times [2021-12-16 00:45:21,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:21,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047667824] [2021-12-16 00:45:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:21,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 00:45:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 00:45:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 00:45:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 00:45:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 00:45:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:45:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:45:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:45:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:45:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:45:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:45:21,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:21,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047667824] [2021-12-16 00:45:21,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047667824] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:21,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689526652] [2021-12-16 00:45:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:21,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:21,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:21,301 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) [2021-12-16 00:45:21,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 00:45:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:21,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 00:45:21,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-16 00:45:21,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:21,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689526652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:21,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:21,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-16 00:45:21,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600260474] [2021-12-16 00:45:21,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:21,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:45:21,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:21,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:45:21,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:45:21,689 INFO L87 Difference]: Start difference. First operand 371 states and 565 transitions. Second operand has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:21,738 INFO L93 Difference]: Finished difference Result 733 states and 1120 transitions. [2021-12-16 00:45:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:45:21,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 130 [2021-12-16 00:45:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:21,742 INFO L225 Difference]: With dead ends: 733 [2021-12-16 00:45:21,742 INFO L226 Difference]: Without dead ends: 373 [2021-12-16 00:45:21,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:21,745 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 133 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1696 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 [2021-12-16 00:45:21,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1696 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:45:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-16 00:45:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-12-16 00:45:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 291 states have (on average 1.529209621993127) internal successors, (445), 295 states have internal predecessors, (445), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2021-12-16 00:45:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 568 transitions. [2021-12-16 00:45:21,771 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 568 transitions. Word has length 130 [2021-12-16 00:45:21,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:21,771 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 568 transitions. [2021-12-16 00:45:21,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:21,771 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 568 transitions. [2021-12-16 00:45:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-16 00:45:21,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:21,775 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:21,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 00:45:22,000 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 [2021-12-16 00:45:22,001 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:22,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1756818314, now seen corresponding path program 1 times [2021-12-16 00:45:22,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:22,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27343936] [2021-12-16 00:45:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:22,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 00:45:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-16 00:45:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 00:45:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 00:45:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:45:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:45:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 00:45:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 00:45:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 00:45:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 00:45:22,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:22,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27343936] [2021-12-16 00:45:22,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27343936] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:22,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661623890] [2021-12-16 00:45:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:22,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:22,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:22,183 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) [2021-12-16 00:45:22,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 00:45:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 00:45:22,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-16 00:45:22,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:45:22,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661623890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:22,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:45:22,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-16 00:45:22,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987535154] [2021-12-16 00:45:22,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:22,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:45:22,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:22,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:45:22,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-16 00:45:22,597 INFO L87 Difference]: Start difference. First operand 373 states and 568 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:22,653 INFO L93 Difference]: Finished difference Result 735 states and 1125 transitions. [2021-12-16 00:45:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:45:22,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2021-12-16 00:45:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:22,656 INFO L225 Difference]: With dead ends: 735 [2021-12-16 00:45:22,656 INFO L226 Difference]: Without dead ends: 375 [2021-12-16 00:45:22,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-16 00:45:22,658 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 132 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1685 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 [2021-12-16 00:45:22,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1685 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:45:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-16 00:45:22,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-12-16 00:45:22,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 292 states have (on average 1.5273972602739727) internal successors, (446), 297 states have internal predecessors, (446), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-16 00:45:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 574 transitions. [2021-12-16 00:45:22,679 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 574 transitions. Word has length 131 [2021-12-16 00:45:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:22,681 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 574 transitions. [2021-12-16 00:45:22,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 574 transitions. [2021-12-16 00:45:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-16 00:45:22,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:22,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:22,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 00:45:22,903 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 [2021-12-16 00:45:22,903 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:22,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1732568241, now seen corresponding path program 1 times [2021-12-16 00:45:22,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:22,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022102645] [2021-12-16 00:45:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:22,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 00:45:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 00:45:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:23,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 00:45:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:45:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:23,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:45:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 00:45:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 00:45:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 00:45:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:45:23,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:23,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022102645] [2021-12-16 00:45:23,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022102645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:23,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:23,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:45:23,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115862597] [2021-12-16 00:45:23,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:23,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:45:23,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:45:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:45:23,047 INFO L87 Difference]: Start difference. First operand 375 states and 574 transitions. Second operand has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:24,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:24,534 INFO L93 Difference]: Finished difference Result 900 states and 1384 transitions. [2021-12-16 00:45:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:45:24,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 132 [2021-12-16 00:45:24,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:24,537 INFO L225 Difference]: With dead ends: 900 [2021-12-16 00:45:24,537 INFO L226 Difference]: Without dead ends: 548 [2021-12-16 00:45:24,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:45:24,539 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 1161 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:24,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 1640 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 00:45:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-12-16 00:45:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 375. [2021-12-16 00:45:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 292 states have (on average 1.5273972602739727) internal successors, (446), 297 states have internal predecessors, (446), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2021-12-16 00:45:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 573 transitions. [2021-12-16 00:45:24,556 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 573 transitions. Word has length 132 [2021-12-16 00:45:24,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:24,556 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 573 transitions. [2021-12-16 00:45:24,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:24,556 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 573 transitions. [2021-12-16 00:45:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-16 00:45:24,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:24,558 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:24,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 00:45:24,558 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:24,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1485769538, now seen corresponding path program 2 times [2021-12-16 00:45:24,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:24,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802374053] [2021-12-16 00:45:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:24,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 00:45:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 00:45:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 00:45:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:45:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:45:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:45:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 00:45:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:45:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 00:45:24,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:24,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802374053] [2021-12-16 00:45:24,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802374053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:24,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:24,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:45:24,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981708271] [2021-12-16 00:45:24,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:24,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:45:24,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:45:24,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:45:24,689 INFO L87 Difference]: Start difference. First operand 375 states and 573 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:25,677 INFO L93 Difference]: Finished difference Result 902 states and 1387 transitions. [2021-12-16 00:45:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 00:45:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 133 [2021-12-16 00:45:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:25,680 INFO L225 Difference]: With dead ends: 902 [2021-12-16 00:45:25,680 INFO L226 Difference]: Without dead ends: 550 [2021-12-16 00:45:25,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 00:45:25,682 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 1162 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:25,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 1636 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:45:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-12-16 00:45:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 377. [2021-12-16 00:45:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 293 states have (on average 1.5255972696245734) internal successors, (447), 299 states have internal predecessors, (447), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2021-12-16 00:45:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 576 transitions. [2021-12-16 00:45:25,719 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 576 transitions. Word has length 133 [2021-12-16 00:45:25,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:25,719 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 576 transitions. [2021-12-16 00:45:25,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 00:45:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 576 transitions. [2021-12-16 00:45:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 00:45:25,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:25,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:25,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 00:45:25,723 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:25,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:25,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1953903468, now seen corresponding path program 1 times [2021-12-16 00:45:25,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:25,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002007643] [2021-12-16 00:45:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:25,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 00:45:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:45:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:45:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:45:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:45:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 00:45:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:45:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 00:45:25,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002007643] [2021-12-16 00:45:25,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002007643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:25,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:25,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:45:25,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581823289] [2021-12-16 00:45:25,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:25,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:45:25,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:45:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:45:25,857 INFO L87 Difference]: Start difference. First operand 377 states and 576 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-16 00:45:27,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:27,840 INFO L93 Difference]: Finished difference Result 900 states and 1382 transitions. [2021-12-16 00:45:27,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:45:27,840 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 134 [2021-12-16 00:45:27,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:27,843 INFO L225 Difference]: With dead ends: 900 [2021-12-16 00:45:27,843 INFO L226 Difference]: Without dead ends: 550 [2021-12-16 00:45:27,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-16 00:45:27,845 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 1297 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 3618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:27,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1297 Valid, 2157 Invalid, 3618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-16 00:45:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-12-16 00:45:27,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 377. [2021-12-16 00:45:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 293 states have (on average 1.5255972696245734) internal successors, (447), 299 states have internal predecessors, (447), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-16 00:45:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 575 transitions. [2021-12-16 00:45:27,875 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 575 transitions. Word has length 134 [2021-12-16 00:45:27,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:27,876 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 575 transitions. [2021-12-16 00:45:27,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-16 00:45:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 575 transitions. [2021-12-16 00:45:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-16 00:45:27,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:27,878 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:27,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 00:45:27,878 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:27,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:27,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1064517663, now seen corresponding path program 2 times [2021-12-16 00:45:27,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:27,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63019189] [2021-12-16 00:45:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:27,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 00:45:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:45:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:45:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:45:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:45:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 00:45:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:45:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 00:45:28,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:28,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63019189] [2021-12-16 00:45:28,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63019189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:28,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:28,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 00:45:28,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071794862] [2021-12-16 00:45:28,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:28,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:45:28,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:28,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:45:28,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 00:45:28,019 INFO L87 Difference]: Start difference. First operand 377 states and 575 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-16 00:45:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:29,508 INFO L93 Difference]: Finished difference Result 902 states and 1388 transitions. [2021-12-16 00:45:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 00:45:29,509 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 135 [2021-12-16 00:45:29,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:29,514 INFO L225 Difference]: With dead ends: 902 [2021-12-16 00:45:29,514 INFO L226 Difference]: Without dead ends: 552 [2021-12-16 00:45:29,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-16 00:45:29,518 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 1303 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 3058 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 3058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:29,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 2118 Invalid, 3578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 3058 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 00:45:29,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-12-16 00:45:29,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 379. [2021-12-16 00:45:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 294 states have (on average 1.5238095238095237) internal successors, (448), 301 states have internal predecessors, (448), 61 states have call successors, (61), 19 states have call predecessors, (61), 23 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2021-12-16 00:45:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 581 transitions. [2021-12-16 00:45:29,539 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 581 transitions. Word has length 135 [2021-12-16 00:45:29,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:29,540 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 581 transitions. [2021-12-16 00:45:29,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-16 00:45:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 581 transitions. [2021-12-16 00:45:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-16 00:45:29,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:29,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:29,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 00:45:29,542 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash -217542937, now seen corresponding path program 1 times [2021-12-16 00:45:29,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:29,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040509248] [2021-12-16 00:45:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:29,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 00:45:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:45:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:45:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:45:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:45:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 00:45:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:45:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-16 00:45:29,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:29,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040509248] [2021-12-16 00:45:29,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040509248] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:45:29,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665411419] [2021-12-16 00:45:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:29,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:45:29,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:45:29,673 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) [2021-12-16 00:45:29,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 00:45:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:29,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 00:45:29,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:45:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:30,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:45:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:30,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665411419] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:45:30,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 00:45:30,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-16 00:45:30,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836877873] [2021-12-16 00:45:30,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 00:45:30,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 00:45:30,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 00:45:30,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-16 00:45:30,303 INFO L87 Difference]: Start difference. First operand 379 states and 581 transitions. Second operand has 15 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-16 00:45:33,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:33,236 INFO L93 Difference]: Finished difference Result 1631 states and 2696 transitions. [2021-12-16 00:45:33,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 00:45:33,236 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 136 [2021-12-16 00:45:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:33,243 INFO L225 Difference]: With dead ends: 1631 [2021-12-16 00:45:33,243 INFO L226 Difference]: Without dead ends: 1283 [2021-12-16 00:45:33,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-16 00:45:33,245 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 3380 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 5014 mSolverCounterSat, 1316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3382 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 6330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1316 IncrementalHoareTripleChecker+Valid, 5014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:33,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3382 Valid, 3926 Invalid, 6330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1316 Valid, 5014 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-16 00:45:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-12-16 00:45:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 732. [2021-12-16 00:45:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 583 states have (on average 1.5763293310463122) internal successors, (919), 590 states have internal predecessors, (919), 125 states have call successors, (125), 19 states have call predecessors, (125), 23 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2021-12-16 00:45:33,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1190 transitions. [2021-12-16 00:45:33,279 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1190 transitions. Word has length 136 [2021-12-16 00:45:33,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:33,279 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1190 transitions. [2021-12-16 00:45:33,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-16 00:45:33,280 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1190 transitions. [2021-12-16 00:45:33,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-16 00:45:33,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:33,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:33,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 00:45:33,500 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 [2021-12-16 00:45:33,501 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:33,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:33,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1216349846, now seen corresponding path program 1 times [2021-12-16 00:45:33,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:33,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530841096] [2021-12-16 00:45:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:33,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 00:45:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:45:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:45:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 00:45:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:45:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 00:45:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 00:45:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:33,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:33,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530841096] [2021-12-16 00:45:33,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530841096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:33,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:33,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:33,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361154606] [2021-12-16 00:45:33,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:33,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:33,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:33,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:33,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:33,593 INFO L87 Difference]: Start difference. First operand 732 states and 1190 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:34,454 INFO L93 Difference]: Finished difference Result 1892 states and 3139 transitions. [2021-12-16 00:45:34,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:34,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2021-12-16 00:45:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:34,460 INFO L225 Difference]: With dead ends: 1892 [2021-12-16 00:45:34,460 INFO L226 Difference]: Without dead ends: 1238 [2021-12-16 00:45:34,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:34,463 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1152 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:34,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 1372 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 00:45:34,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-12-16 00:45:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1057. [2021-12-16 00:45:34,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 844 states have (on average 1.5924170616113744) internal successors, (1344), 851 states have internal predecessors, (1344), 189 states have call successors, (189), 19 states have call predecessors, (189), 23 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2021-12-16 00:45:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1753 transitions. [2021-12-16 00:45:34,547 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1753 transitions. Word has length 139 [2021-12-16 00:45:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:34,547 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1753 transitions. [2021-12-16 00:45:34,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1753 transitions. [2021-12-16 00:45:34,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-16 00:45:34,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:34,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:34,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 00:45:34,554 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:34,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:34,554 INFO L85 PathProgramCache]: Analyzing trace with hash -284867229, now seen corresponding path program 1 times [2021-12-16 00:45:34,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:34,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475225513] [2021-12-16 00:45:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:34,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 00:45:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:45:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:45:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 00:45:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:45:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 00:45:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 00:45:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:34,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:34,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475225513] [2021-12-16 00:45:34,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475225513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:34,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:34,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:34,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024222652] [2021-12-16 00:45:34,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:34,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:34,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:34,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:34,656 INFO L87 Difference]: Start difference. First operand 1057 states and 1753 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:35,705 INFO L93 Difference]: Finished difference Result 2697 states and 4523 transitions. [2021-12-16 00:45:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:35,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2021-12-16 00:45:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:35,713 INFO L225 Difference]: With dead ends: 2697 [2021-12-16 00:45:35,713 INFO L226 Difference]: Without dead ends: 1771 [2021-12-16 00:45:35,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:35,716 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1161 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:35,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 1346 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:45:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2021-12-16 00:45:35,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1590. [2021-12-16 00:45:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1282 states have (on average 1.5990639625585024) internal successors, (2050), 1289 states have internal predecessors, (2050), 284 states have call successors, (284), 19 states have call predecessors, (284), 23 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2021-12-16 00:45:35,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2649 transitions. [2021-12-16 00:45:35,782 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2649 transitions. Word has length 140 [2021-12-16 00:45:35,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:35,782 INFO L470 AbstractCegarLoop]: Abstraction has 1590 states and 2649 transitions. [2021-12-16 00:45:35,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:35,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2649 transitions. [2021-12-16 00:45:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 00:45:35,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:35,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:35,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 00:45:35,789 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:35,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:35,790 INFO L85 PathProgramCache]: Analyzing trace with hash -431747836, now seen corresponding path program 1 times [2021-12-16 00:45:35,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:35,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104546066] [2021-12-16 00:45:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:35,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 00:45:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:45:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 00:45:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 00:45:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:45:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 00:45:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:45:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:35,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:35,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104546066] [2021-12-16 00:45:35,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104546066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:35,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:35,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:35,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587574152] [2021-12-16 00:45:35,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:35,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:35,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:35,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:35,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:35,901 INFO L87 Difference]: Start difference. First operand 1590 states and 2649 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:36,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:36,852 INFO L93 Difference]: Finished difference Result 3904 states and 6609 transitions. [2021-12-16 00:45:36,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:36,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 141 [2021-12-16 00:45:36,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:36,862 INFO L225 Difference]: With dead ends: 3904 [2021-12-16 00:45:36,862 INFO L226 Difference]: Without dead ends: 2580 [2021-12-16 00:45:36,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:36,866 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1136 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:36,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 1368 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:45:36,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2021-12-16 00:45:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2399. [2021-12-16 00:45:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1968 states have (on average 1.6041666666666667) internal successors, (3157), 1975 states have internal predecessors, (3157), 407 states have call successors, (407), 19 states have call predecessors, (407), 23 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2021-12-16 00:45:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 4018 transitions. [2021-12-16 00:45:36,968 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 4018 transitions. Word has length 141 [2021-12-16 00:45:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:36,968 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 4018 transitions. [2021-12-16 00:45:36,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 4018 transitions. [2021-12-16 00:45:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-16 00:45:36,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:36,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:36,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 00:45:36,977 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1081150108, now seen corresponding path program 1 times [2021-12-16 00:45:36,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105615061] [2021-12-16 00:45:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:36,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 00:45:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:45:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 00:45:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 00:45:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:45:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 00:45:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 00:45:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:37,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:37,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105615061] [2021-12-16 00:45:37,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105615061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:37,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:37,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:37,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647275661] [2021-12-16 00:45:37,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:37,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:37,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:37,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:37,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:37,062 INFO L87 Difference]: Start difference. First operand 2399 states and 4018 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:38,132 INFO L93 Difference]: Finished difference Result 5788 states and 9869 transitions. [2021-12-16 00:45:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:38,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 142 [2021-12-16 00:45:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:38,148 INFO L225 Difference]: With dead ends: 5788 [2021-12-16 00:45:38,148 INFO L226 Difference]: Without dead ends: 3874 [2021-12-16 00:45:38,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:38,154 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1145 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:38,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 1345 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:45:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2021-12-16 00:45:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 3693. [2021-12-16 00:45:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3083 states have (on average 1.6072007784625364) internal successors, (4955), 3090 states have internal predecessors, (4955), 586 states have call successors, (586), 19 states have call predecessors, (586), 23 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2021-12-16 00:45:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6200 transitions. [2021-12-16 00:45:38,317 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6200 transitions. Word has length 142 [2021-12-16 00:45:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:38,317 INFO L470 AbstractCegarLoop]: Abstraction has 3693 states and 6200 transitions. [2021-12-16 00:45:38,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6200 transitions. [2021-12-16 00:45:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-16 00:45:38,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:38,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:38,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 00:45:38,329 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash 132577312, now seen corresponding path program 1 times [2021-12-16 00:45:38,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:38,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646221913] [2021-12-16 00:45:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:38,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 00:45:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:45:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 00:45:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 00:45:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:45:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 00:45:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 00:45:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:38,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:38,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646221913] [2021-12-16 00:45:38,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646221913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:38,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:38,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:38,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818572752] [2021-12-16 00:45:38,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:38,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:38,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:38,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:38,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:38,432 INFO L87 Difference]: Start difference. First operand 3693 states and 6200 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:39,567 INFO L93 Difference]: Finished difference Result 8891 states and 15233 transitions. [2021-12-16 00:45:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:39,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 143 [2021-12-16 00:45:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:39,589 INFO L225 Difference]: With dead ends: 8891 [2021-12-16 00:45:39,589 INFO L226 Difference]: Without dead ends: 6015 [2021-12-16 00:45:39,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:39,597 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1158 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:39,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1389 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:45:39,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6015 states. [2021-12-16 00:45:39,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6015 to 5834. [2021-12-16 00:45:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5834 states, 4848 states have (on average 1.6008663366336633) internal successors, (7761), 4855 states have internal predecessors, (7761), 962 states have call successors, (962), 19 states have call predecessors, (962), 23 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2021-12-16 00:45:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 9802 transitions. [2021-12-16 00:45:40,012 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 9802 transitions. Word has length 143 [2021-12-16 00:45:40,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:40,012 INFO L470 AbstractCegarLoop]: Abstraction has 5834 states and 9802 transitions. [2021-12-16 00:45:40,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:40,013 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 9802 transitions. [2021-12-16 00:45:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-16 00:45:40,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:40,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:40,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 00:45:40,055 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:40,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:40,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1732044216, now seen corresponding path program 1 times [2021-12-16 00:45:40,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:40,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320737465] [2021-12-16 00:45:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:40,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 00:45:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:45:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 00:45:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 00:45:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 00:45:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 00:45:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 00:45:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:40,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:40,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320737465] [2021-12-16 00:45:40,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320737465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:40,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:40,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:40,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790564319] [2021-12-16 00:45:40,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:40,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:40,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:40,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:40,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:40,140 INFO L87 Difference]: Start difference. First operand 5834 states and 9802 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:41,460 INFO L93 Difference]: Finished difference Result 14508 states and 24846 transitions. [2021-12-16 00:45:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:41,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 144 [2021-12-16 00:45:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:41,493 INFO L225 Difference]: With dead ends: 14508 [2021-12-16 00:45:41,493 INFO L226 Difference]: Without dead ends: 9893 [2021-12-16 00:45:41,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:41,507 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1165 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:41,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 1336 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:45:41,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2021-12-16 00:45:41,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 9712. [2021-12-16 00:45:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9712 states, 8120 states have (on average 1.5985221674876848) internal successors, (12980), 8127 states have internal predecessors, (12980), 1568 states have call successors, (1568), 19 states have call predecessors, (1568), 23 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2021-12-16 00:45:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 16311 transitions. [2021-12-16 00:45:41,969 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 16311 transitions. Word has length 144 [2021-12-16 00:45:41,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:41,970 INFO L470 AbstractCegarLoop]: Abstraction has 9712 states and 16311 transitions. [2021-12-16 00:45:41,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 16311 transitions. [2021-12-16 00:45:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 00:45:41,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:41,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:41,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 00:45:41,997 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:41,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:41,997 INFO L85 PathProgramCache]: Analyzing trace with hash -934674194, now seen corresponding path program 1 times [2021-12-16 00:45:41,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:41,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701135926] [2021-12-16 00:45:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:41,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 00:45:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 00:45:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 00:45:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 00:45:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 00:45:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 00:45:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 00:45:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:42,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:42,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701135926] [2021-12-16 00:45:42,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701135926] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:42,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:42,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:42,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650102819] [2021-12-16 00:45:42,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:42,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:42,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:42,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:42,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:42,085 INFO L87 Difference]: Start difference. First operand 9712 states and 16311 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:43,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:43,573 INFO L93 Difference]: Finished difference Result 25217 states and 43127 transitions. [2021-12-16 00:45:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:43,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 145 [2021-12-16 00:45:43,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:43,623 INFO L225 Difference]: With dead ends: 25217 [2021-12-16 00:45:43,623 INFO L226 Difference]: Without dead ends: 17206 [2021-12-16 00:45:43,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:43,645 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 1160 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:43,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 1352 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:45:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17206 states. [2021-12-16 00:45:44,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17206 to 17025. [2021-12-16 00:45:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17025 states, 14230 states have (on average 1.5900210822206606) internal successors, (22626), 14237 states have internal predecessors, (22626), 2771 states have call successors, (2771), 19 states have call predecessors, (2771), 23 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2021-12-16 00:45:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17025 states to 17025 states and 28507 transitions. [2021-12-16 00:45:44,392 INFO L78 Accepts]: Start accepts. Automaton has 17025 states and 28507 transitions. Word has length 145 [2021-12-16 00:45:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:44,393 INFO L470 AbstractCegarLoop]: Abstraction has 17025 states and 28507 transitions. [2021-12-16 00:45:44,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:44,394 INFO L276 IsEmpty]: Start isEmpty. Operand 17025 states and 28507 transitions. [2021-12-16 00:45:44,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 00:45:44,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:44,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:44,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 00:45:44,423 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:44,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash 721666921, now seen corresponding path program 1 times [2021-12-16 00:45:44,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:44,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816991997] [2021-12-16 00:45:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:44,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 00:45:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 00:45:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 00:45:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 00:45:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 00:45:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 00:45:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 00:45:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:44,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:44,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816991997] [2021-12-16 00:45:44,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816991997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:44,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:44,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:44,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036454486] [2021-12-16 00:45:44,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:44,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:44,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:44,518 INFO L87 Difference]: Start difference. First operand 17025 states and 28507 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:46,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:46,859 INFO L93 Difference]: Finished difference Result 45193 states and 77140 transitions. [2021-12-16 00:45:46,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:46,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 146 [2021-12-16 00:45:46,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:46,948 INFO L225 Difference]: With dead ends: 45193 [2021-12-16 00:45:46,948 INFO L226 Difference]: Without dead ends: 30546 [2021-12-16 00:45:46,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:46,979 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 1116 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:46,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 1374 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 00:45:46,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30546 states. [2021-12-16 00:45:48,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30546 to 30365. [2021-12-16 00:45:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30365 states, 25531 states have (on average 1.585875993889781) internal successors, (40489), 25538 states have internal predecessors, (40489), 4810 states have call successors, (4810), 19 states have call predecessors, (4810), 23 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2021-12-16 00:45:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30365 states to 30365 states and 50722 transitions. [2021-12-16 00:45:48,362 INFO L78 Accepts]: Start accepts. Automaton has 30365 states and 50722 transitions. Word has length 146 [2021-12-16 00:45:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:48,362 INFO L470 AbstractCegarLoop]: Abstraction has 30365 states and 50722 transitions. [2021-12-16 00:45:48,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 30365 states and 50722 transitions. [2021-12-16 00:45:48,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-16 00:45:48,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:48,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:48,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 00:45:48,399 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:48,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash -164120016, now seen corresponding path program 1 times [2021-12-16 00:45:48,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:48,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702260885] [2021-12-16 00:45:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:48,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 00:45:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 00:45:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 00:45:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 00:45:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 00:45:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 00:45:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 00:45:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:48,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:48,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702260885] [2021-12-16 00:45:48,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702260885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:48,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:48,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:48,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128397429] [2021-12-16 00:45:48,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:48,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:48,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:48,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:48,477 INFO L87 Difference]: Start difference. First operand 30365 states and 50722 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:51,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:51,451 INFO L93 Difference]: Finished difference Result 82930 states and 140664 transitions. [2021-12-16 00:45:51,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:51,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 147 [2021-12-16 00:45:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:51,646 INFO L225 Difference]: With dead ends: 82930 [2021-12-16 00:45:51,647 INFO L226 Difference]: Without dead ends: 55755 [2021-12-16 00:45:51,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:51,709 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 1146 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:51,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 1367 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:45:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55755 states. [2021-12-16 00:45:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55755 to 55574. [2021-12-16 00:45:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55574 states, 47025 states have (on average 1.5804359383306752) internal successors, (74320), 47032 states have internal predecessors, (74320), 8525 states have call successors, (8525), 19 states have call predecessors, (8525), 23 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2021-12-16 00:45:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55574 states to 55574 states and 92515 transitions. [2021-12-16 00:45:54,560 INFO L78 Accepts]: Start accepts. Automaton has 55574 states and 92515 transitions. Word has length 147 [2021-12-16 00:45:54,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:45:54,561 INFO L470 AbstractCegarLoop]: Abstraction has 55574 states and 92515 transitions. [2021-12-16 00:45:54,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:54,561 INFO L276 IsEmpty]: Start isEmpty. Operand 55574 states and 92515 transitions. [2021-12-16 00:45:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-16 00:45:54,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:45:54,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:45:54,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 00:45:54,613 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:45:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:45:54,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2051460439, now seen corresponding path program 1 times [2021-12-16 00:45:54,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:45:54,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127073730] [2021-12-16 00:45:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:45:54,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:45:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:45:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:45:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:45:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:45:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:45:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:45:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 00:45:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 00:45:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 00:45:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 00:45:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 00:45:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 00:45:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-16 00:45:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:45:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:45:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 00:45:54,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:45:54,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127073730] [2021-12-16 00:45:54,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127073730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:45:54,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:45:54,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 00:45:54,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138347389] [2021-12-16 00:45:54,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:45:54,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 00:45:54,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:45:54,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 00:45:54,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:45:54,683 INFO L87 Difference]: Start difference. First operand 55574 states and 92515 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:45:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:45:58,923 INFO L93 Difference]: Finished difference Result 103986 states and 176650 transitions. [2021-12-16 00:45:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:45:58,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 148 [2021-12-16 00:45:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:45:59,660 INFO L225 Difference]: With dead ends: 103986 [2021-12-16 00:45:59,660 INFO L226 Difference]: Without dead ends: 103829 [2021-12-16 00:45:59,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:45:59,700 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 1130 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 00:45:59,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 1372 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 00:45:59,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103829 states. [2021-12-16 00:46:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103829 to 103648. [2021-12-16 00:46:04,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103648 states, 88300 states have (on average 1.5736240090600226) internal successors, (138951), 88307 states have internal predecessors, (138951), 15324 states have call successors, (15324), 19 states have call predecessors, (15324), 23 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2021-12-16 00:46:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103648 states to 103648 states and 171790 transitions. [2021-12-16 00:46:04,668 INFO L78 Accepts]: Start accepts. Automaton has 103648 states and 171790 transitions. Word has length 148 [2021-12-16 00:46:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:46:04,668 INFO L470 AbstractCegarLoop]: Abstraction has 103648 states and 171790 transitions. [2021-12-16 00:46:04,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 00:46:04,669 INFO L276 IsEmpty]: Start isEmpty. Operand 103648 states and 171790 transitions. [2021-12-16 00:46:04,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-16 00:46:04,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:46:04,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:46:04,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 00:46:04,732 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:46:04,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:46:04,733 INFO L85 PathProgramCache]: Analyzing trace with hash 953497743, now seen corresponding path program 1 times [2021-12-16 00:46:04,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:46:04,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214724972] [2021-12-16 00:46:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:46:04,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:46:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 00:46:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 00:46:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 00:46:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 00:46:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 00:46:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 00:46:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 00:46:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 00:46:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 00:46:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 00:46:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 00:46:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 00:46:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 00:46:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 00:46:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-16 00:46:05,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:46:05,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214724972] [2021-12-16 00:46:05,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214724972] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:46:05,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620352740] [2021-12-16 00:46:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:46:05,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:46:05,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:46:05,156 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) [2021-12-16 00:46:05,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 00:46:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:46:05,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 00:46:05,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:46:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 00:46:05,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:46:05,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620352740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:46:05,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 00:46:05,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2021-12-16 00:46:05,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170999265] [2021-12-16 00:46:05,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:46:05,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 00:46:05,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:46:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 00:46:05,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-12-16 00:46:05,927 INFO L87 Difference]: Start difference. First operand 103648 states and 171790 transitions. Second operand has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 9 states have internal predecessors, (113), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-16 00:46:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:46:14,011 INFO L93 Difference]: Finished difference Result 206668 states and 348018 transitions. [2021-12-16 00:46:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 00:46:14,012 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 9 states have internal predecessors, (113), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 149 [2021-12-16 00:46:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:46:14,867 INFO L225 Difference]: With dead ends: 206668 [2021-12-16 00:46:14,868 INFO L226 Difference]: Without dead ends: 206517 [2021-12-16 00:46:14,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2021-12-16 00:46:14,960 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 1280 mSDsluCounter, 5012 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 5730 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 00:46:14,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 5730 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 00:46:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206517 states.