./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 00:54:48,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 00:54:48,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 00:54:48,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 00:54:48,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 00:54:48,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 00:54:48,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 00:54:48,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 00:54:48,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 00:54:48,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 00:54:48,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 00:54:48,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 00:54:48,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 00:54:48,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 00:54:48,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 00:54:48,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 00:54:48,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 00:54:48,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 00:54:48,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 00:54:48,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 00:54:48,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 00:54:48,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 00:54:48,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 00:54:48,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 00:54:48,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 00:54:48,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 00:54:48,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 00:54:48,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 00:54:48,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 00:54:48,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 00:54:48,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 00:54:48,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 00:54:48,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 00:54:48,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 00:54:48,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 00:54:48,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 00:54:48,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 00:54:48,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 00:54:48,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 00:54:48,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 00:54:48,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 00:54:48,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 00:54:48,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 00:54:48,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 00:54:48,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 00:54:48,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 00:54:48,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 00:54:48,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 00:54:48,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 00:54:48,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 00:54:48,463 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 00:54:48,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 00:54:48,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 00:54:48,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 00:54:48,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 00:54:48,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 00:54:48,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 00:54:48,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 00:54:48,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 00:54:48,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 00:54:48,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 00:54:48,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 00:54:48,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 00:54:48,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:54:48,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 00:54:48,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 00:54:48,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 00:54:48,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 00:54:48,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 00:54:48,466 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 00:54:48,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 00:54:48,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 00:54:48,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 00:54:48,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e [2021-11-17 00:54:48,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 00:54:48,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 00:54:48,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 00:54:48,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 00:54:48,650 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 00:54:48,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-17 00:54:48,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564e160a6/cf447af2c7f5473d87a32c3a385a1b7f/FLAG677e9ddf4 [2021-11-17 00:54:49,276 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 00:54:49,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-17 00:54:49,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564e160a6/cf447af2c7f5473d87a32c3a385a1b7f/FLAG677e9ddf4 [2021-11-17 00:54:49,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564e160a6/cf447af2c7f5473d87a32c3a385a1b7f [2021-11-17 00:54:49,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 00:54:49,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 00:54:49,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 00:54:49,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 00:54:49,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 00:54:49,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:54:49" (1/1) ... [2021-11-17 00:54:49,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10379489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:49, skipping insertion in model container [2021-11-17 00:54:49,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:54:49" (1/1) ... [2021-11-17 00:54:49,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 00:54:49,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 00:54:50,141 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/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-17 00:54:50,505 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:54:50,520 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 00:54:50,616 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/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-17 00:54:50,764 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:54:50,803 INFO L208 MainTranslator]: Completed translation [2021-11-17 00:54:50,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50 WrapperNode [2021-11-17 00:54:50,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 00:54:50,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 00:54:50,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 00:54:50,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 00:54:50,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (1/1) ... [2021-11-17 00:54:50,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (1/1) ... [2021-11-17 00:54:51,010 INFO L137 Inliner]: procedures = 174, calls = 1111, calls flagged for inlining = 78, calls inlined = 75, statements flattened = 3505 [2021-11-17 00:54:51,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 00:54:51,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 00:54:51,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 00:54:51,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 00:54:51,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (1/1) ... [2021-11-17 00:54:51,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (1/1) ... [2021-11-17 00:54:51,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (1/1) ... [2021-11-17 00:54:51,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (1/1) ... [2021-11-17 00:54:51,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (1/1) ... [2021-11-17 00:54:51,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (1/1) ... [2021-11-17 00:54:51,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (1/1) ... [2021-11-17 00:54:51,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 00:54:51,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 00:54:51,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 00:54:51,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 00:54:51,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (1/1) ... [2021-11-17 00:54:51,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:54:51,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:54:51,194 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) [2021-11-17 00:54:51,224 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 [2021-11-17 00:54:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure dlci_to_q922 [2021-11-17 00:54:51,236 INFO L138 BoogieDeclarations]: Found implementation of procedure dlci_to_q922 [2021-11-17 00:54:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 00:54:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 00:54:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 00:54:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 00:54:51,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 00:54:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure dev_queue_xmit [2021-11-17 00:54:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_queue_xmit [2021-11-17 00:54:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 00:54:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure state [2021-11-17 00:54:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure state [2021-11-17 00:54:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure fr_hard_header [2021-11-17 00:54:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_hard_header [2021-11-17 00:54:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure find_pvc [2021-11-17 00:54:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure find_pvc [2021-11-17 00:54:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-17 00:54:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-17 00:54:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-17 00:54:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-17 00:54:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 00:54:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 00:54:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-17 00:54:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-17 00:54:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-17 00:54:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-17 00:54:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_carrier [2021-11-17 00:54:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_carrier [2021-11-17 00:54:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 00:54:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 00:54:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_2 [2021-11-17 00:54:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_2 [2021-11-17 00:54:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-17 00:54:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-17 00:54:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-17 00:54:51,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-17 00:54:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 00:54:51,240 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 00:54:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure fr_rx [2021-11-17 00:54:51,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_rx [2021-11-17 00:54:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_ioctl [2021-11-17 00:54:51,241 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_ioctl [2021-11-17 00:54:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 00:54:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-17 00:54:51,241 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-17 00:54:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 00:54:51,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 00:54:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure fr_ioctl [2021-11-17 00:54:51,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_ioctl [2021-11-17 00:54:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-17 00:54:51,242 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-17 00:54:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-17 00:54:51,242 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-17 00:54:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-17 00:54:51,242 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-17 00:54:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 00:54:51,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 00:54:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2021-11-17 00:54:51,244 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2021-11-17 00:54:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 00:54:51,244 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 00:54:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 00:54:51,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 00:54:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 00:54:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2021-11-17 00:54:51,245 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2021-11-17 00:54:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-17 00:54:51,245 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-17 00:54:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-17 00:54:51,245 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-17 00:54:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure fr_log_dlci_active [2021-11-17 00:54:51,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_log_dlci_active [2021-11-17 00:54:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 00:54:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 00:54:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 00:54:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure delete_unused_pvcs [2021-11-17 00:54:51,247 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_unused_pvcs [2021-11-17 00:54:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-11-17 00:54:51,247 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-11-17 00:54:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-17 00:54:51,247 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-17 00:54:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_is_used [2021-11-17 00:54:51,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_is_used [2021-11-17 00:54:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 00:54:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-17 00:54:51,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-17 00:54:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-17 00:54:51,248 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-17 00:54:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure fr_set_link_state [2021-11-17 00:54:51,248 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_set_link_state [2021-11-17 00:54:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure fr_lmi_send [2021-11-17 00:54:51,249 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_lmi_send [2021-11-17 00:54:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 00:54:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 00:54:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-17 00:54:51,249 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-17 00:54:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-17 00:54:51,250 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-17 00:54:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-17 00:54:51,250 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-17 00:54:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-17 00:54:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-17 00:54:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure get_dev_p [2021-11-17 00:54:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dev_p [2021-11-17 00:54:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 00:54:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2021-11-17 00:54:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2021-11-17 00:54:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure add_pvc [2021-11-17 00:54:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pvc [2021-11-17 00:54:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice [2021-11-17 00:54:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice [2021-11-17 00:54:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 00:54:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 00:54:51,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 00:54:51,253 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-17 00:54:51,253 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-17 00:54:51,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 00:54:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 00:54:51,741 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 00:54:51,745 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 00:54:51,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 00:54:53,183 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 00:54:53,193 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 00:54:53,193 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-17 00:54:53,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:54:53 BoogieIcfgContainer [2021-11-17 00:54:53,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 00:54:53,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 00:54:53,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 00:54:53,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 00:54:53,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:54:49" (1/3) ... [2021-11-17 00:54:53,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466dbac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:54:53, skipping insertion in model container [2021-11-17 00:54:53,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:54:50" (2/3) ... [2021-11-17 00:54:53,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466dbac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:54:53, skipping insertion in model container [2021-11-17 00:54:53,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:54:53" (3/3) ... [2021-11-17 00:54:53,202 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-17 00:54:53,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 00:54:53,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 00:54:53,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 00:54:53,244 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 [2021-11-17 00:54:53,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 00:54:53,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 1162 states, 845 states have (on average 1.3775147928994083) internal successors, (1164), 861 states have internal predecessors, (1164), 265 states have call successors, (265), 51 states have call predecessors, (265), 50 states have return successors, (261), 260 states have call predecessors, (261), 261 states have call successors, (261) [2021-11-17 00:54:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-17 00:54:53,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:54:53,277 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:54:53,278 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:54:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:54:53,281 INFO L85 PathProgramCache]: Analyzing trace with hash 16503480, now seen corresponding path program 1 times [2021-11-17 00:54:53,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:54:53,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695354637] [2021-11-17 00:54:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:54:53,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:54:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:54:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:53,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:54:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:53,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:54:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:53,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:54:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-17 00:54:53,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:54:53,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695354637] [2021-11-17 00:54:53,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695354637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:54:53,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:54:53,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:54:53,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215224347] [2021-11-17 00:54:53,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:54:53,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:54:53,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:54:53,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:54:53,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:54:53,708 INFO L87 Difference]: Start difference. First operand has 1162 states, 845 states have (on average 1.3775147928994083) internal successors, (1164), 861 states have internal predecessors, (1164), 265 states have call successors, (265), 51 states have call predecessors, (265), 50 states have return successors, (261), 260 states have call predecessors, (261), 261 states have call successors, (261) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-17 00:54:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:54:56,325 INFO L93 Difference]: Finished difference Result 3724 states and 5603 transitions. [2021-11-17 00:54:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:54:56,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2021-11-17 00:54:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:54:56,347 INFO L225 Difference]: With dead ends: 3724 [2021-11-17 00:54:56,348 INFO L226 Difference]: Without dead ends: 2551 [2021-11-17 00:54:56,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:54:56,359 INFO L933 BasicCegarLoop]: 1886 mSDtfsCounter, 2215 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 762 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 762 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:54:56,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2434 Valid, 4001 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [762 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-17 00:54:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2021-11-17 00:54:56,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2273. [2021-11-17 00:54:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1659 states have (on average 1.3664858348402653) internal successors, (2267), 1679 states have internal predecessors, (2267), 515 states have call successors, (515), 99 states have call predecessors, (515), 98 states have return successors, (514), 512 states have call predecessors, (514), 514 states have call successors, (514) [2021-11-17 00:54:56,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 3296 transitions. [2021-11-17 00:54:56,503 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 3296 transitions. Word has length 41 [2021-11-17 00:54:56,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:54:56,503 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 3296 transitions. [2021-11-17 00:54:56,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-17 00:54:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 3296 transitions. [2021-11-17 00:54:56,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-17 00:54:56,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:54:56,506 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:54:56,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 00:54:56,507 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:54:56,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:54:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash 202884705, now seen corresponding path program 1 times [2021-11-17 00:54:56,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:54:56,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588860848] [2021-11-17 00:54:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:54:56,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:54:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:56,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:54:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:54:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:54:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:56,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:54:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-17 00:54:56,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:54:56,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588860848] [2021-11-17 00:54:56,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588860848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:54:56,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:54:56,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 00:54:56,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512006809] [2021-11-17 00:54:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:54:56,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:54:56,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:54:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:54:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:54:56,597 INFO L87 Difference]: Start difference. First operand 2273 states and 3296 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-17 00:54:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:54:58,677 INFO L93 Difference]: Finished difference Result 4811 states and 7034 transitions. [2021-11-17 00:54:58,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:54:58,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-11-17 00:54:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:54:58,691 INFO L225 Difference]: With dead ends: 4811 [2021-11-17 00:54:58,691 INFO L226 Difference]: Without dead ends: 2550 [2021-11-17 00:54:58,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:54:58,701 INFO L933 BasicCegarLoop]: 2044 mSDtfsCounter, 2220 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 4432 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-17 00:54:58,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 4432 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-17 00:54:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-11-17 00:54:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2272. [2021-11-17 00:54:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 1658 states have (on average 1.3648974668275031) internal successors, (2263), 1678 states have internal predecessors, (2263), 515 states have call successors, (515), 99 states have call predecessors, (515), 98 states have return successors, (514), 512 states have call predecessors, (514), 514 states have call successors, (514) [2021-11-17 00:54:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 3292 transitions. [2021-11-17 00:54:58,788 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 3292 transitions. Word has length 44 [2021-11-17 00:54:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:54:58,788 INFO L470 AbstractCegarLoop]: Abstraction has 2272 states and 3292 transitions. [2021-11-17 00:54:58,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-17 00:54:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 3292 transitions. [2021-11-17 00:54:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-17 00:54:58,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:54:58,792 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-11-17 00:54:58,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 00:54:58,793 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:54:58,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:54:58,793 INFO L85 PathProgramCache]: Analyzing trace with hash -94841370, now seen corresponding path program 1 times [2021-11-17 00:54:58,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:54:58,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757256108] [2021-11-17 00:54:58,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:54:58,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:54:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:58,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:54:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:54:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:54:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:58,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:54:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:58,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:54:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:58,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:54:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-17 00:54:58,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:54:58,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757256108] [2021-11-17 00:54:58,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757256108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:54:58,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:54:58,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:54:58,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90346488] [2021-11-17 00:54:58,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:54:58,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:54:58,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:54:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:54:58,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:54:58,918 INFO L87 Difference]: Start difference. First operand 2272 states and 3292 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-17 00:55:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:02,071 INFO L93 Difference]: Finished difference Result 7337 states and 10822 transitions. [2021-11-17 00:55:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:55:02,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2021-11-17 00:55:02,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:02,110 INFO L225 Difference]: With dead ends: 7337 [2021-11-17 00:55:02,110 INFO L226 Difference]: Without dead ends: 5072 [2021-11-17 00:55:02,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:55:02,154 INFO L933 BasicCegarLoop]: 1874 mSDtfsCounter, 2202 mSDsluCounter, 5476 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2422 SdHoareTripleChecker+Valid, 7350 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 761 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:02,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2422 Valid, 7350 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [761 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-17 00:55:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-11-17 00:55:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 4554. [2021-11-17 00:55:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4554 states, 3324 states have (on average 1.3655234657039712) internal successors, (4539), 3368 states have internal predecessors, (4539), 1025 states have call successors, (1025), 197 states have call predecessors, (1025), 204 states have return successors, (1084), 1024 states have call predecessors, (1084), 1024 states have call successors, (1084) [2021-11-17 00:55:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6648 transitions. [2021-11-17 00:55:02,327 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6648 transitions. Word has length 66 [2021-11-17 00:55:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:02,329 INFO L470 AbstractCegarLoop]: Abstraction has 4554 states and 6648 transitions. [2021-11-17 00:55:02,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-17 00:55:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6648 transitions. [2021-11-17 00:55:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-17 00:55:02,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:02,340 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:55:02,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 00:55:02,341 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:02,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash -248182647, now seen corresponding path program 1 times [2021-11-17 00:55:02,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:02,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514612164] [2021-11-17 00:55:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:02,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:02,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:55:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:02,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:55:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:55:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-17 00:55:02,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:02,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514612164] [2021-11-17 00:55:02,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514612164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:55:02,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:55:02,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 00:55:02,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253517432] [2021-11-17 00:55:02,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:55:02,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:55:02,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:55:02,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:55:02,472 INFO L87 Difference]: Start difference. First operand 4554 states and 6648 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-17 00:55:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:07,642 INFO L93 Difference]: Finished difference Result 15534 states and 23138 transitions. [2021-11-17 00:55:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:55:07,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 103 [2021-11-17 00:55:07,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:07,701 INFO L225 Difference]: With dead ends: 15534 [2021-11-17 00:55:07,701 INFO L226 Difference]: Without dead ends: 10992 [2021-11-17 00:55:07,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:55:07,726 INFO L933 BasicCegarLoop]: 2701 mSDtfsCounter, 2578 mSDsluCounter, 2894 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 1256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2784 SdHoareTripleChecker+Valid, 5595 SdHoareTripleChecker+Invalid, 4737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1256 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:07,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2784 Valid, 5595 Invalid, 4737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1256 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-17 00:55:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2021-11-17 00:55:08,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 9020. [2021-11-17 00:55:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9020 states, 6596 states have (on average 1.3635536688902365) internal successors, (8994), 6698 states have internal predecessors, (8994), 2007 states have call successors, (2007), 389 states have call predecessors, (2007), 416 states have return successors, (2153), 2004 states have call predecessors, (2153), 2006 states have call successors, (2153) [2021-11-17 00:55:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 13154 transitions. [2021-11-17 00:55:08,155 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 13154 transitions. Word has length 103 [2021-11-17 00:55:08,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:08,156 INFO L470 AbstractCegarLoop]: Abstraction has 9020 states and 13154 transitions. [2021-11-17 00:55:08,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-17 00:55:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 13154 transitions. [2021-11-17 00:55:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-17 00:55:08,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:08,167 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:55:08,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 00:55:08,168 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:08,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:08,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1651725426, now seen corresponding path program 1 times [2021-11-17 00:55:08,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:08,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616196919] [2021-11-17 00:55:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:08,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:55:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 00:55:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:55:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-17 00:55:08,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:08,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616196919] [2021-11-17 00:55:08,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616196919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:55:08,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:55:08,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 00:55:08,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870389241] [2021-11-17 00:55:08,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:55:08,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:55:08,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:08,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:55:08,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:55:08,279 INFO L87 Difference]: Start difference. First operand 9020 states and 13154 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 00:55:13,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:13,116 INFO L93 Difference]: Finished difference Result 19708 states and 29148 transitions. [2021-11-17 00:55:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:55:13,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2021-11-17 00:55:13,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:13,161 INFO L225 Difference]: With dead ends: 19708 [2021-11-17 00:55:13,162 INFO L226 Difference]: Without dead ends: 10700 [2021-11-17 00:55:13,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:55:13,199 INFO L933 BasicCegarLoop]: 1851 mSDtfsCounter, 3137 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 1630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3343 SdHoareTripleChecker+Valid, 4095 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1630 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:13,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3343 Valid, 4095 Invalid, 4457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1630 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-17 00:55:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10700 states. [2021-11-17 00:55:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10700 to 8736. [2021-11-17 00:55:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8736 states, 6368 states have (on average 1.3613379396984924) internal successors, (8669), 6472 states have internal predecessors, (8669), 1957 states have call successors, (1957), 383 states have call predecessors, (1957), 410 states have return successors, (2098), 1952 states have call predecessors, (2098), 1956 states have call successors, (2098) [2021-11-17 00:55:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8736 states to 8736 states and 12724 transitions. [2021-11-17 00:55:13,588 INFO L78 Accepts]: Start accepts. Automaton has 8736 states and 12724 transitions. Word has length 95 [2021-11-17 00:55:13,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:13,588 INFO L470 AbstractCegarLoop]: Abstraction has 8736 states and 12724 transitions. [2021-11-17 00:55:13,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 00:55:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 8736 states and 12724 transitions. [2021-11-17 00:55:13,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-17 00:55:13,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:13,601 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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] [2021-11-17 00:55:13,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 00:55:13,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1725212051, now seen corresponding path program 1 times [2021-11-17 00:55:13,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:13,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905084427] [2021-11-17 00:55:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:13,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:13,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:13,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:13,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:55:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:13,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:55:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:13,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 00:55:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-17 00:55:13,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:13,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905084427] [2021-11-17 00:55:13,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905084427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:55:13,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:55:13,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 00:55:13,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855041118] [2021-11-17 00:55:13,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:55:13,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:55:13,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:55:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:55:13,731 INFO L87 Difference]: Start difference. First operand 8736 states and 12724 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 00:55:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:20,001 INFO L93 Difference]: Finished difference Result 19998 states and 29670 transitions. [2021-11-17 00:55:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:55:20,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 117 [2021-11-17 00:55:20,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:20,065 INFO L225 Difference]: With dead ends: 19998 [2021-11-17 00:55:20,065 INFO L226 Difference]: Without dead ends: 13371 [2021-11-17 00:55:20,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:55:20,155 INFO L933 BasicCegarLoop]: 2871 mSDtfsCounter, 2477 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 1203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 5950 SdHoareTripleChecker+Invalid, 4831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1203 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:20,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2691 Valid, 5950 Invalid, 4831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1203 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-17 00:55:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13371 states. [2021-11-17 00:55:20,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13371 to 10917. [2021-11-17 00:55:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10917 states, 7963 states have (on average 1.361170413160869) internal successors, (10839), 8094 states have internal predecessors, (10839), 2438 states have call successors, (2438), 481 states have call predecessors, (2438), 515 states have return successors, (2613), 2431 states have call predecessors, (2613), 2437 states have call successors, (2613) [2021-11-17 00:55:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10917 states to 10917 states and 15890 transitions. [2021-11-17 00:55:20,613 INFO L78 Accepts]: Start accepts. Automaton has 10917 states and 15890 transitions. Word has length 117 [2021-11-17 00:55:20,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:20,613 INFO L470 AbstractCegarLoop]: Abstraction has 10917 states and 15890 transitions. [2021-11-17 00:55:20,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 00:55:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 10917 states and 15890 transitions. [2021-11-17 00:55:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-17 00:55:20,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:20,626 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:55:20,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 00:55:20,626 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:20,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash -159171181, now seen corresponding path program 1 times [2021-11-17 00:55:20,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:20,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861423740] [2021-11-17 00:55:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:20,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:20,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:55:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:55:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:20,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-17 00:55:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:20,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-17 00:55:20,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:20,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861423740] [2021-11-17 00:55:20,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861423740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:55:20,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:55:20,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:55:20,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800580711] [2021-11-17 00:55:20,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:55:20,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:55:20,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:55:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:55:20,765 INFO L87 Difference]: Start difference. First operand 10917 states and 15890 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 00:55:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:26,818 INFO L93 Difference]: Finished difference Result 27579 states and 40872 transitions. [2021-11-17 00:55:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:55:26,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 122 [2021-11-17 00:55:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:26,918 INFO L225 Difference]: With dead ends: 27579 [2021-11-17 00:55:26,918 INFO L226 Difference]: Without dead ends: 18771 [2021-11-17 00:55:26,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:55:26,955 INFO L933 BasicCegarLoop]: 2915 mSDtfsCounter, 2587 mSDsluCounter, 5302 mSDsCounter, 0 mSdLazyCounter, 4891 mSolverCounterSat, 1415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 8217 SdHoareTripleChecker+Invalid, 6306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1415 IncrementalHoareTripleChecker+Valid, 4891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:26,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2729 Valid, 8217 Invalid, 6306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1415 Valid, 4891 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-17 00:55:26,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18771 states. [2021-11-17 00:55:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18771 to 10921. [2021-11-17 00:55:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10921 states, 7967 states have (on average 1.3609890799548137) internal successors, (10843), 8098 states have internal predecessors, (10843), 2438 states have call successors, (2438), 481 states have call predecessors, (2438), 515 states have return successors, (2613), 2431 states have call predecessors, (2613), 2437 states have call successors, (2613) [2021-11-17 00:55:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10921 states to 10921 states and 15894 transitions. [2021-11-17 00:55:27,574 INFO L78 Accepts]: Start accepts. Automaton has 10921 states and 15894 transitions. Word has length 122 [2021-11-17 00:55:27,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:27,576 INFO L470 AbstractCegarLoop]: Abstraction has 10921 states and 15894 transitions. [2021-11-17 00:55:27,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 00:55:27,576 INFO L276 IsEmpty]: Start isEmpty. Operand 10921 states and 15894 transitions. [2021-11-17 00:55:27,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-17 00:55:27,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:27,590 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:55:27,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 00:55:27,591 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1619034978, now seen corresponding path program 1 times [2021-11-17 00:55:27,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:27,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934529788] [2021-11-17 00:55:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:27,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:55:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:55:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:27,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 00:55:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-17 00:55:27,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:27,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934529788] [2021-11-17 00:55:27,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934529788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:55:27,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:55:27,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 00:55:27,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479668999] [2021-11-17 00:55:27,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:55:27,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:55:27,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:27,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:55:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:55:27,733 INFO L87 Difference]: Start difference. First operand 10921 states and 15894 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-17 00:55:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:31,292 INFO L93 Difference]: Finished difference Result 19044 states and 28439 transitions. [2021-11-17 00:55:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:55:31,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 132 [2021-11-17 00:55:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:31,345 INFO L225 Difference]: With dead ends: 19044 [2021-11-17 00:55:31,345 INFO L226 Difference]: Without dead ends: 13373 [2021-11-17 00:55:31,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:55:31,369 INFO L933 BasicCegarLoop]: 1542 mSDtfsCounter, 1010 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 3810 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:31,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 3810 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-17 00:55:31,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13373 states. [2021-11-17 00:55:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13373 to 10931. [2021-11-17 00:55:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10931 states, 7977 states have (on average 1.3605365425598597) internal successors, (10853), 8108 states have internal predecessors, (10853), 2438 states have call successors, (2438), 481 states have call predecessors, (2438), 515 states have return successors, (2613), 2431 states have call predecessors, (2613), 2437 states have call successors, (2613) [2021-11-17 00:55:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10931 states to 10931 states and 15904 transitions. [2021-11-17 00:55:31,919 INFO L78 Accepts]: Start accepts. Automaton has 10931 states and 15904 transitions. Word has length 132 [2021-11-17 00:55:31,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:31,919 INFO L470 AbstractCegarLoop]: Abstraction has 10931 states and 15904 transitions. [2021-11-17 00:55:31,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-17 00:55:31,920 INFO L276 IsEmpty]: Start isEmpty. Operand 10931 states and 15904 transitions. [2021-11-17 00:55:31,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-17 00:55:31,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:31,933 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:55:31,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 00:55:31,933 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:31,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1510120385, now seen corresponding path program 1 times [2021-11-17 00:55:31,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:31,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093401535] [2021-11-17 00:55:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:31,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:32,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:55:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:55:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 00:55:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-17 00:55:32,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:32,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093401535] [2021-11-17 00:55:32,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093401535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:55:32,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:55:32,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:55:32,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089233997] [2021-11-17 00:55:32,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:55:32,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:55:32,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:55:32,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:55:32,106 INFO L87 Difference]: Start difference. First operand 10931 states and 15904 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-17 00:55:42,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:42,150 INFO L93 Difference]: Finished difference Result 27272 states and 40484 transitions. [2021-11-17 00:55:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-17 00:55:42,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 134 [2021-11-17 00:55:42,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:42,288 INFO L225 Difference]: With dead ends: 27272 [2021-11-17 00:55:42,289 INFO L226 Difference]: Without dead ends: 16353 [2021-11-17 00:55:42,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-11-17 00:55:42,316 INFO L933 BasicCegarLoop]: 1823 mSDtfsCounter, 5465 mSDsluCounter, 5203 mSDsCounter, 0 mSdLazyCounter, 9094 mSolverCounterSat, 3171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5761 SdHoareTripleChecker+Valid, 7026 SdHoareTripleChecker+Invalid, 12265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3171 IncrementalHoareTripleChecker+Valid, 9094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:42,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5761 Valid, 7026 Invalid, 12265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3171 Valid, 9094 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-11-17 00:55:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16353 states. [2021-11-17 00:55:42,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16353 to 12266. [2021-11-17 00:55:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12266 states, 8957 states have (on average 1.353466562465111) internal successors, (12123), 9118 states have internal predecessors, (12123), 2688 states have call successors, (2688), 576 states have call predecessors, (2688), 620 states have return successors, (2913), 2681 states have call predecessors, (2913), 2687 states have call successors, (2913) [2021-11-17 00:55:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12266 states to 12266 states and 17724 transitions. [2021-11-17 00:55:42,783 INFO L78 Accepts]: Start accepts. Automaton has 12266 states and 17724 transitions. Word has length 134 [2021-11-17 00:55:42,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:42,784 INFO L470 AbstractCegarLoop]: Abstraction has 12266 states and 17724 transitions. [2021-11-17 00:55:42,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-17 00:55:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 12266 states and 17724 transitions. [2021-11-17 00:55:42,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-17 00:55:42,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:42,811 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:55:42,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 00:55:42,811 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:42,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:42,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1419893241, now seen corresponding path program 1 times [2021-11-17 00:55:42,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:42,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294674254] [2021-11-17 00:55:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:42,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:55:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:55:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:55:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:55:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:55:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:55:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:55:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:55:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-17 00:55:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 00:55:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 00:55:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:55:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:55:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:55:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:55:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-17 00:55:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-17 00:55:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 00:55:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 00:55:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:43,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 00:55:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:43,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 00:55:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-17 00:55:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:43,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 00:55:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-17 00:55:43,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:43,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294674254] [2021-11-17 00:55:43,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294674254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:55:43,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:55:43,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 00:55:43,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070475830] [2021-11-17 00:55:43,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:55:43,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:55:43,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:43,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:55:43,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:55:43,020 INFO L87 Difference]: Start difference. First operand 12266 states and 17724 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 00:55:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:45,608 INFO L93 Difference]: Finished difference Result 27785 states and 40884 transitions. [2021-11-17 00:55:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:55:45,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 208 [2021-11-17 00:55:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:45,709 INFO L225 Difference]: With dead ends: 27785 [2021-11-17 00:55:45,709 INFO L226 Difference]: Without dead ends: 15531 [2021-11-17 00:55:45,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:55:45,748 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 885 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:45,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 3726 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-17 00:55:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15531 states. [2021-11-17 00:55:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15531 to 13416. [2021-11-17 00:55:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13416 states, 9907 states have (on average 1.3498536388412234) internal successors, (13373), 10098 states have internal predecessors, (13373), 2888 states have call successors, (2888), 576 states have call predecessors, (2888), 620 states have return successors, (3158), 2891 states have call predecessors, (3158), 2887 states have call successors, (3158) [2021-11-17 00:55:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13416 states to 13416 states and 19419 transitions. [2021-11-17 00:55:46,326 INFO L78 Accepts]: Start accepts. Automaton has 13416 states and 19419 transitions. Word has length 208 [2021-11-17 00:55:46,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:46,327 INFO L470 AbstractCegarLoop]: Abstraction has 13416 states and 19419 transitions. [2021-11-17 00:55:46,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 00:55:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13416 states and 19419 transitions. [2021-11-17 00:55:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-17 00:55:46,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:46,350 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:55:46,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 00:55:46,350 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:46,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1308316105, now seen corresponding path program 1 times [2021-11-17 00:55:46,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:46,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168891004] [2021-11-17 00:55:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:46,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:55:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:55:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:55:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:55:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:55:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:55:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:55:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:55:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-17 00:55:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 00:55:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 00:55:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:55:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:55:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:55:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:55:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-17 00:55:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-17 00:55:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 00:55:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 00:55:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 00:55:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 00:55:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-17 00:55:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 00:55:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-17 00:55:46,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:46,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168891004] [2021-11-17 00:55:46,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168891004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:55:46,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:55:46,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 00:55:46,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379882715] [2021-11-17 00:55:46,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:55:46,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:55:46,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:46,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:55:46,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:55:46,692 INFO L87 Difference]: Start difference. First operand 13416 states and 19419 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 00:55:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:49,887 INFO L93 Difference]: Finished difference Result 28720 states and 42214 transitions. [2021-11-17 00:55:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 00:55:49,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 208 [2021-11-17 00:55:49,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:49,944 INFO L225 Difference]: With dead ends: 28720 [2021-11-17 00:55:49,944 INFO L226 Difference]: Without dead ends: 15316 [2021-11-17 00:55:49,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:55:49,988 INFO L933 BasicCegarLoop]: 1610 mSDtfsCounter, 424 mSDsluCounter, 5417 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 7027 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:49,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 7027 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 2477 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-17 00:55:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15316 states. [2021-11-17 00:55:50,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15316 to 13456. [2021-11-17 00:55:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13456 states, 9937 states have (on average 1.3487974237697493) internal successors, (13403), 10128 states have internal predecessors, (13403), 2888 states have call successors, (2888), 576 states have call predecessors, (2888), 630 states have return successors, (3182), 2901 states have call predecessors, (3182), 2887 states have call successors, (3182) [2021-11-17 00:55:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13456 states to 13456 states and 19473 transitions. [2021-11-17 00:55:50,626 INFO L78 Accepts]: Start accepts. Automaton has 13456 states and 19473 transitions. Word has length 208 [2021-11-17 00:55:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:50,627 INFO L470 AbstractCegarLoop]: Abstraction has 13456 states and 19473 transitions. [2021-11-17 00:55:50,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 00:55:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 13456 states and 19473 transitions. [2021-11-17 00:55:50,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-17 00:55:50,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:50,651 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:55:50,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-17 00:55:50,651 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:50,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2029014981, now seen corresponding path program 1 times [2021-11-17 00:55:50,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:50,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834519722] [2021-11-17 00:55:50,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:50,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:55:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:55:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:55:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:55:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:55:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:55:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:55:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:55:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-17 00:55:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 00:55:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 00:55:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:55:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:55:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:55:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:55:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:55:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 00:55:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-17 00:55:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-17 00:55:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 00:55:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 00:55:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-17 00:55:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 00:55:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 00:55:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-17 00:55:51,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:51,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834519722] [2021-11-17 00:55:51,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834519722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:55:51,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:55:51,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-17 00:55:51,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682622722] [2021-11-17 00:55:51,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:55:51,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-17 00:55:51,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:51,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-17 00:55:51,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-11-17 00:55:51,254 INFO L87 Difference]: Start difference. First operand 13456 states and 19473 transitions. Second operand has 16 states, 15 states have (on average 6.8) internal successors, (102), 11 states have internal predecessors, (102), 3 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 00:55:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:57,517 INFO L93 Difference]: Finished difference Result 30395 states and 44714 transitions. [2021-11-17 00:55:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-17 00:55:57,517 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.8) internal successors, (102), 11 states have internal predecessors, (102), 3 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 215 [2021-11-17 00:55:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:57,574 INFO L225 Difference]: With dead ends: 30395 [2021-11-17 00:55:57,574 INFO L226 Difference]: Without dead ends: 16951 [2021-11-17 00:55:57,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-11-17 00:55:57,614 INFO L933 BasicCegarLoop]: 1708 mSDtfsCounter, 504 mSDsluCounter, 17993 mSDsCounter, 0 mSdLazyCounter, 5526 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 19701 SdHoareTripleChecker+Invalid, 5825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 5526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:57,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 19701 Invalid, 5825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 5526 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-17 00:55:57,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16951 states. [2021-11-17 00:55:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16951 to 13536. [2021-11-17 00:55:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 10007 states have (on average 1.3433596482462276) internal successors, (13443), 10188 states have internal predecessors, (13443), 2888 states have call successors, (2888), 576 states have call predecessors, (2888), 640 states have return successors, (3202), 2921 states have call predecessors, (3202), 2887 states have call successors, (3202) [2021-11-17 00:55:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 19533 transitions. [2021-11-17 00:55:58,162 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 19533 transitions. Word has length 215 [2021-11-17 00:55:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:58,162 INFO L470 AbstractCegarLoop]: Abstraction has 13536 states and 19533 transitions. [2021-11-17 00:55:58,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.8) internal successors, (102), 11 states have internal predecessors, (102), 3 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 00:55:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 19533 transitions. [2021-11-17 00:55:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-17 00:55:58,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:58,183 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:55:58,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-17 00:55:58,183 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:58,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1853804592, now seen corresponding path program 1 times [2021-11-17 00:55:58,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:58,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287631860] [2021-11-17 00:55:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:58,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:55:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:55:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:55:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:55:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:55:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:55:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:55:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:55:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:55:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:55:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:55:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:55:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:55:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:55:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:55:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:55:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:55:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:55:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:55:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:55:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:55:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:55:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 00:55:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 00:55:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:55:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:55:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:55:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-17 00:55:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-11-17 00:55:58,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:58,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287631860] [2021-11-17 00:55:58,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287631860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:55:58,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:55:58,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 00:55:58,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765942800] [2021-11-17 00:55:58,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:55:58,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:55:58,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:58,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:55:58,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:55:58,416 INFO L87 Difference]: Start difference. First operand 13536 states and 19533 transitions. Second operand has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 4 states have internal predecessors, (187), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-17 00:56:05,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:56:05,152 INFO L93 Difference]: Finished difference Result 45858 states and 67578 transitions. [2021-11-17 00:56:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:56:05,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 4 states have internal predecessors, (187), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 309 [2021-11-17 00:56:05,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:56:05,254 INFO L225 Difference]: With dead ends: 45858 [2021-11-17 00:56:05,254 INFO L226 Difference]: Without dead ends: 32334 [2021-11-17 00:56:05,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:56:05,302 INFO L933 BasicCegarLoop]: 2244 mSDtfsCounter, 2275 mSDsluCounter, 5750 mSDsCounter, 0 mSdLazyCounter, 4597 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 7994 SdHoareTripleChecker+Invalid, 5511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 4597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:56:05,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2500 Valid, 7994 Invalid, 5511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 4597 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-17 00:56:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32334 states. [2021-11-17 00:56:06,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32334 to 25796. [2021-11-17 00:56:06,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25796 states, 19254 states have (on average 1.3418510439389217) internal successors, (25836), 19600 states have internal predecessors, (25836), 5291 states have call successors, (5291), 1121 states have call predecessors, (5291), 1250 states have return successors, (5856), 5374 states have call predecessors, (5856), 5290 states have call successors, (5856) [2021-11-17 00:56:06,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25796 states to 25796 states and 36983 transitions. [2021-11-17 00:56:06,253 INFO L78 Accepts]: Start accepts. Automaton has 25796 states and 36983 transitions. Word has length 309 [2021-11-17 00:56:06,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:56:06,254 INFO L470 AbstractCegarLoop]: Abstraction has 25796 states and 36983 transitions. [2021-11-17 00:56:06,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 4 states have internal predecessors, (187), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-17 00:56:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 25796 states and 36983 transitions. [2021-11-17 00:56:06,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-17 00:56:06,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:56:06,296 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:56:06,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-17 00:56:06,297 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:56:06,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:56:06,297 INFO L85 PathProgramCache]: Analyzing trace with hash 209812636, now seen corresponding path program 1 times [2021-11-17 00:56:06,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:56:06,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405606713] [2021-11-17 00:56:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:06,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:56:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:56:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:56:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:56:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:56:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:56:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:56:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:56:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:56:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:56:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:56:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:56:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:56:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:56:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:56:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:56:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:56:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:56:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:56:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:56:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:56:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:56:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 00:56:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 00:56:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:56:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:56:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:56:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-17 00:56:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-17 00:56:06,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:56:06,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405606713] [2021-11-17 00:56:06,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405606713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:56:06,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:56:06,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:56:06,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724234849] [2021-11-17 00:56:06,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:56:06,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:56:06,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:56:06,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:56:06,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:56:06,549 INFO L87 Difference]: Start difference. First operand 25796 states and 36983 transitions. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-17 00:56:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:56:10,889 INFO L93 Difference]: Finished difference Result 60524 states and 88845 transitions. [2021-11-17 00:56:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:56:10,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 309 [2021-11-17 00:56:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:56:11,016 INFO L225 Difference]: With dead ends: 60524 [2021-11-17 00:56:11,017 INFO L226 Difference]: Without dead ends: 34740 [2021-11-17 00:56:11,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:56:11,092 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1198 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 724 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:56:11,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 4312 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [724 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-17 00:56:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34740 states. [2021-11-17 00:56:12,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34740 to 26996. [2021-11-17 00:56:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26996 states, 20254 states have (on average 1.3526217043546953) internal successors, (27396), 20620 states have internal predecessors, (27396), 5491 states have call successors, (5491), 1121 states have call predecessors, (5491), 1250 states have return successors, (6056), 5574 states have call predecessors, (6056), 5490 states have call successors, (6056) [2021-11-17 00:56:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26996 states to 26996 states and 38943 transitions. [2021-11-17 00:56:12,206 INFO L78 Accepts]: Start accepts. Automaton has 26996 states and 38943 transitions. Word has length 309 [2021-11-17 00:56:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:56:12,207 INFO L470 AbstractCegarLoop]: Abstraction has 26996 states and 38943 transitions. [2021-11-17 00:56:12,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-17 00:56:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 26996 states and 38943 transitions. [2021-11-17 00:56:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-17 00:56:12,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:56:12,244 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:56:12,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-17 00:56:12,244 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:56:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:56:12,245 INFO L85 PathProgramCache]: Analyzing trace with hash -429672610, now seen corresponding path program 1 times [2021-11-17 00:56:12,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:56:12,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043896773] [2021-11-17 00:56:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:12,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:56:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:56:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:56:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:56:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:56:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:56:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:56:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:56:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:56:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:56:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:56:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:56:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:56:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:56:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:56:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:56:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:56:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:56:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:56:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:56:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:56:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:56:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 00:56:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 00:56:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:56:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:56:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:56:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-17 00:56:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-17 00:56:12,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:56:12,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043896773] [2021-11-17 00:56:12,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043896773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:56:12,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:56:12,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:56:12,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982176748] [2021-11-17 00:56:12,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:56:12,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:56:12,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:56:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:56:12,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:56:12,517 INFO L87 Difference]: Start difference. First operand 26996 states and 38943 transitions. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-17 00:56:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:56:17,212 INFO L93 Difference]: Finished difference Result 61744 states and 90795 transitions. [2021-11-17 00:56:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:56:17,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 309 [2021-11-17 00:56:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:56:17,329 INFO L225 Difference]: With dead ends: 61744 [2021-11-17 00:56:17,330 INFO L226 Difference]: Without dead ends: 34760 [2021-11-17 00:56:17,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:56:17,404 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 714 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 2601 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 4631 SdHoareTripleChecker+Invalid, 2964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 2601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:56:17,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 4631 Invalid, 2964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 2601 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-17 00:56:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34760 states. [2021-11-17 00:56:18,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34760 to 27596. [2021-11-17 00:56:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27596 states, 20794 states have (on average 1.3588535154371453) internal successors, (28256), 21160 states have internal predecessors, (28256), 5551 states have call successors, (5551), 1121 states have call predecessors, (5551), 1250 states have return successors, (6116), 5634 states have call predecessors, (6116), 5550 states have call successors, (6116) [2021-11-17 00:56:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27596 states to 27596 states and 39923 transitions. [2021-11-17 00:56:18,459 INFO L78 Accepts]: Start accepts. Automaton has 27596 states and 39923 transitions. Word has length 309 [2021-11-17 00:56:18,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:56:18,460 INFO L470 AbstractCegarLoop]: Abstraction has 27596 states and 39923 transitions. [2021-11-17 00:56:18,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-17 00:56:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand 27596 states and 39923 transitions. [2021-11-17 00:56:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-17 00:56:18,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:56:18,498 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:56:18,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-17 00:56:18,498 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:56:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:56:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash -145687072, now seen corresponding path program 1 times [2021-11-17 00:56:18,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:56:18,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761773797] [2021-11-17 00:56:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:18,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:56:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:56:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:56:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:56:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:56:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:56:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:56:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:56:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:56:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:56:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:56:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 00:56:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:56:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:56:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:56:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:56:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:56:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:56:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:56:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:56:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:56:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:56:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 00:56:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 00:56:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:56:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:56:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:56:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-17 00:56:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-17 00:56:18,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:56:18,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761773797] [2021-11-17 00:56:18,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761773797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:56:18,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:56:18,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:56:18,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047208428] [2021-11-17 00:56:18,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:56:18,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:56:18,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:56:18,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:56:18,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:56:18,903 INFO L87 Difference]: Start difference. First operand 27596 states and 39923 transitions. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-17 00:56:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:56:23,720 INFO L93 Difference]: Finished difference Result 62004 states and 91175 transitions. [2021-11-17 00:56:23,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:56:23,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 309 [2021-11-17 00:56:23,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:56:23,825 INFO L225 Difference]: With dead ends: 62004 [2021-11-17 00:56:23,825 INFO L226 Difference]: Without dead ends: 34420 [2021-11-17 00:56:23,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:56:23,881 INFO L933 BasicCegarLoop]: 1584 mSDtfsCounter, 1093 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:56:23,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 4120 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-17 00:56:23,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34420 states. [2021-11-17 00:56:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34420 to 27596. [2021-11-17 00:56:24,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27596 states, 20794 states have (on average 1.3550062518034047) internal successors, (28176), 21160 states have internal predecessors, (28176), 5551 states have call successors, (5551), 1121 states have call predecessors, (5551), 1250 states have return successors, (6116), 5634 states have call predecessors, (6116), 5550 states have call successors, (6116) [2021-11-17 00:56:25,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27596 states to 27596 states and 39843 transitions. [2021-11-17 00:56:25,051 INFO L78 Accepts]: Start accepts. Automaton has 27596 states and 39843 transitions. Word has length 309 [2021-11-17 00:56:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:56:25,052 INFO L470 AbstractCegarLoop]: Abstraction has 27596 states and 39843 transitions. [2021-11-17 00:56:25,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-17 00:56:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 27596 states and 39843 transitions. [2021-11-17 00:56:25,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-17 00:56:25,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:56:25,093 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:56:25,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-17 00:56:25,093 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:56:25,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:56:25,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1138629090, now seen corresponding path program 1 times [2021-11-17 00:56:25,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:56:25,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803839809] [2021-11-17 00:56:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:25,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:56:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:56:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:56:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:56:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:56:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:56:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:56:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:56:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:56:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 00:56:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-17 00:56:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:56:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:56:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 00:56:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:56:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:56:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:56:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:56:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:56:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:56:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:56:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 00:56:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 00:56:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:56:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:56:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:56:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-11-17 00:56:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-11-17 00:56:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-11-17 00:56:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-11-17 00:56:25,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:56:25,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803839809] [2021-11-17 00:56:25,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803839809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:56:25,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:56:25,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:56:25,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887048449] [2021-11-17 00:56:25,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:56:25,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:56:25,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:56:25,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:56:25,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:56:25,391 INFO L87 Difference]: Start difference. First operand 27596 states and 39843 transitions. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 00:56:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:56:32,991 INFO L93 Difference]: Finished difference Result 62559 states and 91271 transitions. [2021-11-17 00:56:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 00:56:32,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 314 [2021-11-17 00:56:32,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:56:33,106 INFO L225 Difference]: With dead ends: 62559 [2021-11-17 00:56:33,106 INFO L226 Difference]: Without dead ends: 34975 [2021-11-17 00:56:33,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:56:33,175 INFO L933 BasicCegarLoop]: 1921 mSDtfsCounter, 2188 mSDsluCounter, 6077 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 1373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 7998 SdHoareTripleChecker+Invalid, 4918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1373 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:56:33,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2346 Valid, 7998 Invalid, 4918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1373 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-17 00:56:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34975 states. [2021-11-17 00:56:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34975 to 29188. [2021-11-17 00:56:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29188 states, 21983 states have (on average 1.3436291679934496) internal successors, (29537), 22387 states have internal predecessors, (29537), 5795 states have call successors, (5795), 1251 states have call predecessors, (5795), 1409 states have return successors, (6448), 5915 states have call predecessors, (6448), 5794 states have call successors, (6448) [2021-11-17 00:56:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29188 states to 29188 states and 41780 transitions. [2021-11-17 00:56:34,472 INFO L78 Accepts]: Start accepts. Automaton has 29188 states and 41780 transitions. Word has length 314 [2021-11-17 00:56:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:56:34,472 INFO L470 AbstractCegarLoop]: Abstraction has 29188 states and 41780 transitions. [2021-11-17 00:56:34,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 00:56:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 29188 states and 41780 transitions. [2021-11-17 00:56:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-17 00:56:34,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:56:34,517 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:56:34,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-17 00:56:34,517 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:56:34,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:56:34,517 INFO L85 PathProgramCache]: Analyzing trace with hash -733109948, now seen corresponding path program 1 times [2021-11-17 00:56:34,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:56:34,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747343527] [2021-11-17 00:56:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:34,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:56:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:56:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:56:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:56:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:56:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:56:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:56:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:56:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:56:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:56:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:56:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 00:56:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-17 00:56:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:56:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:56:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 00:56:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:56:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:56:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:56:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:56:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:56:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:56:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:56:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 00:56:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 00:56:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:56:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:56:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 00:56:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-11-17 00:56:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-11-17 00:56:34,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:56:34,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747343527] [2021-11-17 00:56:34,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747343527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:56:34,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:56:34,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:56:34,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922371816] [2021-11-17 00:56:34,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:56:34,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:56:34,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:56:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:56:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:56:34,885 INFO L87 Difference]: Start difference. First operand 29188 states and 41780 transitions. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 00:56:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:56:40,520 INFO L93 Difference]: Finished difference Result 64166 states and 93583 transitions. [2021-11-17 00:56:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:56:40,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 314 [2021-11-17 00:56:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:56:40,625 INFO L225 Difference]: With dead ends: 64166 [2021-11-17 00:56:40,626 INFO L226 Difference]: Without dead ends: 34990 [2021-11-17 00:56:40,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:56:40,700 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 652 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:56:40,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 4543 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-17 00:56:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34990 states. [2021-11-17 00:56:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34990 to 29227. [2021-11-17 00:56:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29227 states, 22009 states have (on average 1.3414512244990686) internal successors, (29524), 22413 states have internal predecessors, (29524), 5808 states have call successors, (5808), 1251 states have call predecessors, (5808), 1409 states have return successors, (6461), 5928 states have call predecessors, (6461), 5807 states have call successors, (6461) [2021-11-17 00:56:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29227 states to 29227 states and 41793 transitions. [2021-11-17 00:56:41,983 INFO L78 Accepts]: Start accepts. Automaton has 29227 states and 41793 transitions. Word has length 314 [2021-11-17 00:56:41,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:56:41,984 INFO L470 AbstractCegarLoop]: Abstraction has 29227 states and 41793 transitions. [2021-11-17 00:56:41,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 00:56:41,984 INFO L276 IsEmpty]: Start isEmpty. Operand 29227 states and 41793 transitions. [2021-11-17 00:56:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-17 00:56:42,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:56:42,024 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:56:42,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-17 00:56:42,024 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:56:42,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:56:42,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1928465655, now seen corresponding path program 1 times [2021-11-17 00:56:42,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:56:42,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611553948] [2021-11-17 00:56:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:42,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:56:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:56:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:56:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:56:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:56:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:56:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:56:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:56:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:56:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:56:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:56:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 00:56:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-17 00:56:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:56:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:56:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 00:56:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:56:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:56:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:56:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:42,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:56:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:56:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:56:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:56:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 00:56:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 00:56:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:56:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-17 00:56:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-17 00:56:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-17 00:56:43,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:56:43,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611553948] [2021-11-17 00:56:43,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611553948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:56:43,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:56:43,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-17 00:56:43,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808811653] [2021-11-17 00:56:43,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:56:43,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-17 00:56:43,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:56:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-17 00:56:43,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-11-17 00:56:43,306 INFO L87 Difference]: Start difference. First operand 29227 states and 41793 transitions. Second operand has 23 states, 22 states have (on average 8.636363636363637) internal successors, (190), 17 states have internal predecessors, (190), 8 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-17 00:57:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:57:02,984 INFO L93 Difference]: Finished difference Result 76146 states and 114257 transitions. [2021-11-17 00:57:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-17 00:57:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 8.636363636363637) internal successors, (190), 17 states have internal predecessors, (190), 8 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) Word has length 316 [2021-11-17 00:57:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:57:03,274 INFO L225 Difference]: With dead ends: 76146 [2021-11-17 00:57:03,275 INFO L226 Difference]: Without dead ends: 46931 [2021-11-17 00:57:03,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=1685, Unknown=0, NotChecked=0, Total=1892 [2021-11-17 00:57:03,409 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 2692 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 15713 mSolverCounterSat, 2186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 19279 SdHoareTripleChecker+Invalid, 17899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2186 IncrementalHoareTripleChecker+Valid, 15713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:57:03,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2847 Valid, 19279 Invalid, 17899 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2186 Valid, 15713 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2021-11-17 00:57:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46931 states. [2021-11-17 00:57:04,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46931 to 30033. [2021-11-17 00:57:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30033 states, 22529 states have (on average 1.3376093035642949) internal successors, (30135), 23063 states have internal predecessors, (30135), 6016 states have call successors, (6016), 1251 states have call predecessors, (6016), 1487 states have return successors, (6993), 6084 states have call predecessors, (6993), 6015 states have call successors, (6993) [2021-11-17 00:57:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30033 states to 30033 states and 43144 transitions. [2021-11-17 00:57:05,108 INFO L78 Accepts]: Start accepts. Automaton has 30033 states and 43144 transitions. Word has length 316 [2021-11-17 00:57:05,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:57:05,109 INFO L470 AbstractCegarLoop]: Abstraction has 30033 states and 43144 transitions. [2021-11-17 00:57:05,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 8.636363636363637) internal successors, (190), 17 states have internal predecessors, (190), 8 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-17 00:57:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 30033 states and 43144 transitions. [2021-11-17 00:57:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-17 00:57:05,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:57:05,153 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:57:05,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-17 00:57:05,153 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:57:05,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:57:05,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1360958883, now seen corresponding path program 1 times [2021-11-17 00:57:05,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:57:05,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861370923] [2021-11-17 00:57:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:57:05,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:57:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:57:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:57:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:57:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:57:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:05,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:57:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:57:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:57:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:57:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:57:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:57:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:57:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:57:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 00:57:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:57:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:57:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 00:57:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-17 00:57:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:57:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:57:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 00:57:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:57:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:57:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:57:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:57:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:57:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:57:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:57:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:57:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:57:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:57:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-17 00:57:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-17 00:57:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 00:57:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 00:57:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:57:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-17 00:57:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-11-17 00:57:06,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:57:06,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861370923] [2021-11-17 00:57:06,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861370923] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:57:06,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543483587] [2021-11-17 00:57:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:57:06,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:57:06,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:57:06,379 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) [2021-11-17 00:57:06,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 00:57:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:57:06,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 2246 conjuncts, 136 conjunts are in the unsatisfiable core [2021-11-17 00:57:06,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:57:29,948 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-17 00:57:29,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 112 [2021-11-17 00:57:29,972 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-17 00:57:29,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 133 [2021-11-17 00:57:30,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-17 00:57:30,909 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 164 proven. 5 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-17 00:57:30,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:57:32,272 INFO L354 Elim1Store]: treesize reduction 8, result has 70.4 percent of original size [2021-11-17 00:57:32,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2021-11-17 00:57:32,324 INFO L354 Elim1Store]: treesize reduction 6, result has 60.0 percent of original size [2021-11-17 00:57:32,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 13 [2021-11-17 00:57:32,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 00:57:32,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-17 00:57:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2021-11-17 00:57:32,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543483587] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:57:32,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:57:32,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 18] total 39 [2021-11-17 00:57:32,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756504124] [2021-11-17 00:57:32,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:57:32,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-17 00:57:32,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:57:32,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-17 00:57:32,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1369, Unknown=5, NotChecked=0, Total=1482 [2021-11-17 00:57:32,567 INFO L87 Difference]: Start difference. First operand 30033 states and 43144 transitions. Second operand has 39 states, 35 states have (on average 10.371428571428572) internal successors, (363), 27 states have internal predecessors, (363), 10 states have call successors, (93), 8 states have call predecessors, (93), 9 states have return successors, (84), 11 states have call predecessors, (84), 10 states have call successors, (84) [2021-11-17 00:58:09,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:58:09,224 INFO L93 Difference]: Finished difference Result 80602 states and 120898 transitions. [2021-11-17 00:58:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-17 00:58:09,227 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 10.371428571428572) internal successors, (363), 27 states have internal predecessors, (363), 10 states have call successors, (93), 8 states have call predecessors, (93), 9 states have return successors, (84), 11 states have call predecessors, (84), 10 states have call successors, (84) Word has length 317 [2021-11-17 00:58:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:58:09,443 INFO L225 Difference]: With dead ends: 80602 [2021-11-17 00:58:09,443 INFO L226 Difference]: Without dead ends: 50581 [2021-11-17 00:58:09,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=369, Invalid=3912, Unknown=9, NotChecked=0, Total=4290 [2021-11-17 00:58:09,698 INFO L933 BasicCegarLoop]: 1813 mSDtfsCounter, 2565 mSDsluCounter, 29526 mSDsCounter, 0 mSdLazyCounter, 17974 mSolverCounterSat, 1822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 31339 SdHoareTripleChecker+Invalid, 22535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1822 IncrementalHoareTripleChecker+Valid, 17974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2739 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:58:09,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2705 Valid, 31339 Invalid, 22535 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1822 Valid, 17974 Invalid, 0 Unknown, 2739 Unchecked, 25.2s Time] [2021-11-17 00:58:09,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50581 states. [2021-11-17 00:58:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50581 to 31794. [2021-11-17 00:58:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31794 states, 23923 states have (on average 1.3387117000376207) internal successors, (32026), 24538 states have internal predecessors, (32026), 6312 states have call successors, (6312), 1283 states have call predecessors, (6312), 1558 states have return successors, (7594), 6354 states have call predecessors, (7594), 6311 states have call successors, (7594) [2021-11-17 00:58:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31794 states to 31794 states and 45932 transitions. [2021-11-17 00:58:11,343 INFO L78 Accepts]: Start accepts. Automaton has 31794 states and 45932 transitions. Word has length 317 [2021-11-17 00:58:11,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:58:11,344 INFO L470 AbstractCegarLoop]: Abstraction has 31794 states and 45932 transitions. [2021-11-17 00:58:11,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 10.371428571428572) internal successors, (363), 27 states have internal predecessors, (363), 10 states have call successors, (93), 8 states have call predecessors, (93), 9 states have return successors, (84), 11 states have call predecessors, (84), 10 states have call successors, (84) [2021-11-17 00:58:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand 31794 states and 45932 transitions. [2021-11-17 00:58:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-17 00:58:11,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:58:11,388 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:58:11,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-17 00:58:11,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:58:11,601 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:58:11,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:58:11,601 INFO L85 PathProgramCache]: Analyzing trace with hash 166344395, now seen corresponding path program 1 times [2021-11-17 00:58:11,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:58:11,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841556987] [2021-11-17 00:58:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:58:11,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:58:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:58:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:58:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:58:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:58:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:58:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:58:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:58:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:58:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:58:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:58:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:58:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:58:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:58:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:58:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:58:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:58:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:58:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-17 00:58:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-17 00:58:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:58:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:58:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:58:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:58:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:58:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:58:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:58:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:58:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:58:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 00:58:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 00:58:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 00:58:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 00:58:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 00:58:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-17 00:58:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-11-17 00:58:12,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:58:12,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841556987] [2021-11-17 00:58:12,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841556987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:58:12,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:58:12,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 00:58:12,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049973779] [2021-11-17 00:58:12,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:58:12,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:58:12,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:58:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:58:12,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:58:12,768 INFO L87 Difference]: Start difference. First operand 31794 states and 45932 transitions. Second operand has 10 states, 10 states have (on average 18.8) internal successors, (188), 6 states have internal predecessors, (188), 3 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-17 00:58:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:58:21,308 INFO L93 Difference]: Finished difference Result 75355 states and 111776 transitions. [2021-11-17 00:58:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:58:21,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 6 states have internal predecessors, (188), 3 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 320 [2021-11-17 00:58:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:58:21,476 INFO L225 Difference]: With dead ends: 75355 [2021-11-17 00:58:21,476 INFO L226 Difference]: Without dead ends: 43573 [2021-11-17 00:58:21,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:58:21,561 INFO L933 BasicCegarLoop]: 1610 mSDtfsCounter, 1655 mSDsluCounter, 7578 mSDsCounter, 0 mSdLazyCounter, 4140 mSolverCounterSat, 1158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 9188 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1158 IncrementalHoareTripleChecker+Valid, 4140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:58:21,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1798 Valid, 9188 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1158 Valid, 4140 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-17 00:58:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43573 states. [2021-11-17 00:58:22,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43573 to 31768. [2021-11-17 00:58:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31768 states, 23923 states have (on average 1.3387117000376207) internal successors, (32026), 24512 states have internal predecessors, (32026), 6286 states have call successors, (6286), 1283 states have call predecessors, (6286), 1558 states have return successors, (7490), 6354 states have call predecessors, (7490), 6285 states have call successors, (7490) [2021-11-17 00:58:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31768 states to 31768 states and 45802 transitions. [2021-11-17 00:58:23,025 INFO L78 Accepts]: Start accepts. Automaton has 31768 states and 45802 transitions. Word has length 320 [2021-11-17 00:58:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:58:23,026 INFO L470 AbstractCegarLoop]: Abstraction has 31768 states and 45802 transitions. [2021-11-17 00:58:23,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 6 states have internal predecessors, (188), 3 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-17 00:58:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 31768 states and 45802 transitions. [2021-11-17 00:58:23,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-11-17 00:58:23,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:58:23,067 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:58:23,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-17 00:58:23,068 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:58:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:58:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1979140080, now seen corresponding path program 1 times [2021-11-17 00:58:23,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:58:23,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925683036] [2021-11-17 00:58:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:58:23,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:58:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:58:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:58:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:58:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:58:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:58:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:58:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:58:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:58:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:58:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:58:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:58:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:58:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:58:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:58:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:58:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:58:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:58:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-17 00:58:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-17 00:58:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:58:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:58:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:58:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:58:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:58:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:58:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:58:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:58:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-17 00:58:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 00:58:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-17 00:58:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 00:58:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 00:58:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 00:58:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-11-17 00:58:24,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:58:24,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925683036] [2021-11-17 00:58:24,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925683036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:58:24,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329945309] [2021-11-17 00:58:24,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:58:24,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:58:24,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:58:24,216 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) [2021-11-17 00:58:24,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 00:58:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:24,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-17 00:58:24,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:58:25,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-17 00:58:25,479 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-17 00:58:25,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-17 00:58:25,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-17 00:58:26,233 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#t~loopctr816_17| Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (+ |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr816_17|) 0)) |c_#memory_$Pointer$.base|)) is different from true [2021-11-17 00:58:27,740 WARN L860 $PredicateComparison]: unable to prove that (exists ((|#Ultimate.C_memset_#ptr.offset| Int) (|v_#Ultimate.C_memset_#t~loopctr816_17| Int) (|v_#Ultimate.C_memset_#t~loopctr816_18| Int) (|#Ultimate.C_memset_#ptr.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |#Ultimate.C_memset_#ptr.base| (store (store (select |c_old(#memory_$Pointer$.base)| |#Ultimate.C_memset_#ptr.base|) (+ |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr816_17|) 0) (+ |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr816_18|) 0)))) is different from true [2021-11-17 00:58:27,784 INFO L354 Elim1Store]: treesize reduction 71, result has 33.6 percent of original size [2021-11-17 00:58:27,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 49 [2021-11-17 00:58:28,034 INFO L354 Elim1Store]: treesize reduction 332, result has 15.1 percent of original size [2021-11-17 00:58:28,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 187 treesize of output 169 [2021-11-17 00:58:28,049 INFO L354 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2021-11-17 00:58:28,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 173 treesize of output 167 [2021-11-17 00:58:28,063 INFO L354 Elim1Store]: treesize reduction 41, result has 29.3 percent of original size [2021-11-17 00:58:28,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 141 [2021-11-17 00:58:28,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-17 00:58:28,157 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-11-17 00:58:28,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 82 [2021-11-17 00:58:28,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 65 [2021-11-17 00:58:28,169 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-17 00:58:28,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 55 [2021-11-17 00:58:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 3 not checked. [2021-11-17 00:58:28,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:58:29,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 114 [2021-11-17 00:58:29,756 INFO L354 Elim1Store]: treesize reduction 81, result has 51.8 percent of original size [2021-11-17 00:58:29,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 197 treesize of output 188 [2021-11-17 00:58:29,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-17 00:58:29,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 31 [2021-11-17 00:58:29,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-17 00:58:29,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 31 [2021-11-17 00:58:29,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 194 Killed by 15