./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.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 e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:43:35,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:43:35,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:43:35,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:43:35,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:43:35,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:43:35,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:43:35,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:43:35,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:43:35,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:43:35,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:43:35,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:43:35,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:43:35,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:43:35,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:43:35,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:43:35,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:43:35,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:43:35,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:43:35,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:43:35,374 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:43:35,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:43:35,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:43:35,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:43:35,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:43:35,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:43:35,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:43:35,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:43:35,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:43:35,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:43:35,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:43:35,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:43:35,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:43:35,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:43:35,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:43:35,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:43:35,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:43:35,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:43:35,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:43:35,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:43:35,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:43:35,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:43:35,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:43:35,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:43:35,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:43:35,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:43:35,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:43:35,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:43:35,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:43:35,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:43:35,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:43:35,425 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:43:35,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:43:35,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:43:35,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:43:35,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:43:35,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:43:35,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:43:35,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:43:35,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:43:35,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:43:35,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:43:35,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:43:35,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:43:35,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:43:35,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:43:35,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:43:35,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:43:35,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:43:35,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:43:35,430 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:43:35,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:43:35,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:43:35,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b [2022-07-21 11:43:35,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:43:35,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:43:35,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:43:35,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:43:35,768 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:43:35,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2022-07-21 11:43:35,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3aa32984/a6504b720ed54a3599149e37007a5ea2/FLAG4a6dc979f [2022-07-21 11:43:36,612 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:43:36,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2022-07-21 11:43:36,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3aa32984/a6504b720ed54a3599149e37007a5ea2/FLAG4a6dc979f [2022-07-21 11:43:36,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3aa32984/a6504b720ed54a3599149e37007a5ea2 [2022-07-21 11:43:36,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:43:36,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:43:36,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:43:36,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:43:36,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:43:36,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:43:36" (1/1) ... [2022-07-21 11:43:36,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47815226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:36, skipping insertion in model container [2022-07-21 11:43:36,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:43:36" (1/1) ... [2022-07-21 11:43:36,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:43:36,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:43:37,865 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2022-07-21 11:43:37,904 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-21 11:43:37,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:43:37,974 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:43:38,294 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2022-07-21 11:43:38,317 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-21 11:43:38,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:43:38,429 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:43:38,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38 WrapperNode [2022-07-21 11:43:38,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:43:38,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:43:38,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:43:38,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:43:38,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (1/1) ... [2022-07-21 11:43:38,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (1/1) ... [2022-07-21 11:43:38,613 INFO L137 Inliner]: procedures = 141, calls = 1103, calls flagged for inlining = 57, calls inlined = 55, statements flattened = 2436 [2022-07-21 11:43:38,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:43:38,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:43:38,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:43:38,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:43:38,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (1/1) ... [2022-07-21 11:43:38,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (1/1) ... [2022-07-21 11:43:38,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (1/1) ... [2022-07-21 11:43:38,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (1/1) ... [2022-07-21 11:43:38,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (1/1) ... [2022-07-21 11:43:38,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (1/1) ... [2022-07-21 11:43:38,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (1/1) ... [2022-07-21 11:43:38,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:43:38,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:43:38,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:43:38,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:43:38,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (1/1) ... [2022-07-21 11:43:38,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:43:38,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:43:38,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 11:43:38,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 11:43:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure atm_sk [2022-07-21 11:43:38,941 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_sk [2022-07-21 11:43:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-07-21 11:43:38,942 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-07-21 11:43:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 11:43:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure change_bit [2022-07-21 11:43:38,942 INFO L138 BoogieDeclarations]: Found implementation of procedure change_bit [2022-07-21 11:43:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure atm_alloc_charge [2022-07-21 11:43:38,942 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_alloc_charge [2022-07-21 11:43:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-21 11:43:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:43:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:43:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:43:38,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:43:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 11:43:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 11:43:38,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 11:43:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-07-21 11:43:38,944 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-07-21 11:43:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:43:38,944 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:43:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-21 11:43:38,944 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-21 11:43:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:43:38,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:43:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure sk_sleep [2022-07-21 11:43:38,945 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_sleep [2022-07-21 11:43:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-07-21 11:43:38,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-07-21 11:43:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_ioctl [2022-07-21 11:43:38,945 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_ioctl [2022-07-21 11:43:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:43:38,946 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:43:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 11:43:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:43:38,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:43:38,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:43:38,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:43:38,947 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 11:43:38,947 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 11:43:38,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 11:43:38,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 11:43:38,948 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_dev_close [2022-07-21 11:43:38,948 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_dev_close [2022-07-21 11:43:38,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 11:43:38,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 11:43:38,948 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:43:38,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:43:38,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:43:38,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-21 11:43:38,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-21 11:43:38,949 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2022-07-21 11:43:38,950 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2022-07-21 11:43:38,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:43:38,950 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-21 11:43:38,951 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-21 11:43:38,951 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_send [2022-07-21 11:43:38,952 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_send [2022-07-21 11:43:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-21 11:43:38,952 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-21 11:43:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:43:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:43:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 11:43:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:43:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-21 11:43:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_create [2022-07-21 11:43:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_create [2022-07-21 11:43:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_close [2022-07-21 11:43:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_close [2022-07-21 11:43:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_deregister [2022-07-21 11:43:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_deregister [2022-07-21 11:43:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:43:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:43:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_close [2022-07-21 11:43:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_close [2022-07-21 11:43:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 11:43:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 11:43:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_put [2022-07-21 11:43:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_put [2022-07-21 11:43:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-21 11:43:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-21 11:43:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_lookup [2022-07-21 11:43:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_lookup [2022-07-21 11:43:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 11:43:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 11:43:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 11:43:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_send [2022-07-21 11:43:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_send [2022-07-21 11:43:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-21 11:43:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-21 11:43:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_send_control [2022-07-21 11:43:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_send_control [2022-07-21 11:43:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 11:43:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2022-07-21 11:43:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2022-07-21 11:43:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:43:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:43:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2022-07-21 11:43:38,959 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2022-07-21 11:43:39,464 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:43:39,466 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:43:43,171 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:43:51,860 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:43:51,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:43:51,871 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 11:43:51,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:43:51 BoogieIcfgContainer [2022-07-21 11:43:51,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:43:51,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:43:51,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:43:51,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:43:51,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:43:36" (1/3) ... [2022-07-21 11:43:51,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d473054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:43:51, skipping insertion in model container [2022-07-21 11:43:51,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:38" (2/3) ... [2022-07-21 11:43:51,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d473054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:43:51, skipping insertion in model container [2022-07-21 11:43:51,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:43:51" (3/3) ... [2022-07-21 11:43:51,881 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2022-07-21 11:43:51,893 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:43:51,894 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:43:51,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:43:51,953 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5ac2f73f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@68ae4faa [2022-07-21 11:43:51,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:43:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 628 states, 450 states have (on average 1.3444444444444446) internal successors, (605), 467 states have internal predecessors, (605), 137 states have call successors, (137), 40 states have call predecessors, (137), 39 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) [2022-07-21 11:43:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 11:43:51,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:43:51,972 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-07-21 11:43:51,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:43:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:43:51,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1856106833, now seen corresponding path program 1 times [2022-07-21 11:43:51,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:43:51,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111967072] [2022-07-21 11:43:51,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:43:51,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:43:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:43:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:43:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:43:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:43:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:43:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:43:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:43:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:43:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:43:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:43:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:43:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:43:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:43:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:43:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:43:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:43:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:43:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:43:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:43:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:43:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:43:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:43:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:43:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-21 11:43:52,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:43:52,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111967072] [2022-07-21 11:43:52,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111967072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:43:52,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:43:52,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:43:52,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829036816] [2022-07-21 11:43:52,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:43:52,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:43:52,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:43:52,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:43:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:43:52,785 INFO L87 Difference]: Start difference. First operand has 628 states, 450 states have (on average 1.3444444444444446) internal successors, (605), 467 states have internal predecessors, (605), 137 states have call successors, (137), 40 states have call predecessors, (137), 39 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 11:43:55,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:43:58,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:00,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:44:01,202 INFO L93 Difference]: Finished difference Result 1372 states and 1975 transitions. [2022-07-21 11:44:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 11:44:01,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 133 [2022-07-21 11:44:01,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:44:01,225 INFO L225 Difference]: With dead ends: 1372 [2022-07-21 11:44:01,225 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 11:44:01,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:44:01,237 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 556 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 398 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:44:01,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1583 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 512 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2022-07-21 11:44:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 11:44:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 615. [2022-07-21 11:44:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 444 states have (on average 1.3288288288288288) internal successors, (590), 454 states have internal predecessors, (590), 132 states have call successors, (132), 39 states have call predecessors, (132), 38 states have return successors, (130), 127 states have call predecessors, (130), 130 states have call successors, (130) [2022-07-21 11:44:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 852 transitions. [2022-07-21 11:44:01,350 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 852 transitions. Word has length 133 [2022-07-21 11:44:01,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:44:01,350 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 852 transitions. [2022-07-21 11:44:01,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 11:44:01,351 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 852 transitions. [2022-07-21 11:44:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 11:44:01,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:44:01,364 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-07-21 11:44:01,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 11:44:01,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:44:01,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:44:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1666389307, now seen corresponding path program 1 times [2022-07-21 11:44:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:44:01,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581164829] [2022-07-21 11:44:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:44:01,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:44:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:44:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:44:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:44:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:44:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:44:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:44:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:44:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:44:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-21 11:44:01,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:44:01,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581164829] [2022-07-21 11:44:01,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581164829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:44:01,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:44:01,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:44:01,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875244821] [2022-07-21 11:44:01,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:44:01,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:44:01,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:44:01,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:44:01,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:44:01,725 INFO L87 Difference]: Start difference. First operand 615 states and 852 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 11:44:04,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:07,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:09,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:11,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:16,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:18,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:20,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:44:21,452 INFO L93 Difference]: Finished difference Result 2011 states and 2837 transitions. [2022-07-21 11:44:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:44:21,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 133 [2022-07-21 11:44:21,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:44:21,465 INFO L225 Difference]: With dead ends: 2011 [2022-07-21 11:44:21,466 INFO L226 Difference]: Without dead ends: 1420 [2022-07-21 11:44:21,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:44:21,469 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 1570 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 807 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:44:21,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 2686 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 1358 Invalid, 7 Unknown, 0 Unchecked, 19.4s Time] [2022-07-21 11:44:21,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2022-07-21 11:44:21,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1186. [2022-07-21 11:44:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 860 states have (on average 1.3325581395348838) internal successors, (1146), 879 states have internal predecessors, (1146), 250 states have call successors, (250), 75 states have call predecessors, (250), 75 states have return successors, (252), 243 states have call predecessors, (252), 248 states have call successors, (252) [2022-07-21 11:44:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1648 transitions. [2022-07-21 11:44:21,544 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1648 transitions. Word has length 133 [2022-07-21 11:44:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:44:21,546 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1648 transitions. [2022-07-21 11:44:21,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 11:44:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1648 transitions. [2022-07-21 11:44:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-21 11:44:21,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:44:21,555 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-07-21 11:44:21,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 11:44:21,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:44:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:44:21,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1873060620, now seen corresponding path program 1 times [2022-07-21 11:44:21,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:44:21,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138874415] [2022-07-21 11:44:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:44:21,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:44:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:44:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:44:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:44:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:44:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:44:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:44:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:44:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:44:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-21 11:44:21,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:44:21,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138874415] [2022-07-21 11:44:21,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138874415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:44:21,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:44:21,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:44:21,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725587554] [2022-07-21 11:44:21,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:44:21,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:44:21,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:44:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:44:21,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:44:21,999 INFO L87 Difference]: Start difference. First operand 1186 states and 1648 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 11:44:24,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:27,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:29,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:33,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:36,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:38,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:44:38,876 INFO L93 Difference]: Finished difference Result 2623 states and 3679 transitions. [2022-07-21 11:44:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 11:44:38,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 136 [2022-07-21 11:44:38,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:44:38,885 INFO L225 Difference]: With dead ends: 2623 [2022-07-21 11:44:38,885 INFO L226 Difference]: Without dead ends: 1461 [2022-07-21 11:44:38,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:44:38,891 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1419 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 582 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:44:38,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 3275 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 1263 Invalid, 6 Unknown, 0 Unchecked, 16.6s Time] [2022-07-21 11:44:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2022-07-21 11:44:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1212. [2022-07-21 11:44:38,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 880 states have (on average 1.3295454545454546) internal successors, (1170), 899 states have internal predecessors, (1170), 251 states have call successors, (251), 80 states have call predecessors, (251), 80 states have return successors, (253), 244 states have call predecessors, (253), 249 states have call successors, (253) [2022-07-21 11:44:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1674 transitions. [2022-07-21 11:44:38,950 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1674 transitions. Word has length 136 [2022-07-21 11:44:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:44:38,951 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1674 transitions. [2022-07-21 11:44:38,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 11:44:38,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1674 transitions. [2022-07-21 11:44:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 11:44:38,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:44:38,954 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:44:38,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 11:44:38,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:44:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:44:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash -764946523, now seen corresponding path program 1 times [2022-07-21 11:44:38,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:44:38,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374305920] [2022-07-21 11:44:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:44:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:44:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:44:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:44:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:44:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:44:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:44:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:44:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:44:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:44:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-21 11:44:39,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:44:39,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374305920] [2022-07-21 11:44:39,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374305920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:44:39,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:44:39,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:44:39,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399505981] [2022-07-21 11:44:39,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:44:39,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:44:39,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:44:39,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:44:39,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:44:39,364 INFO L87 Difference]: Start difference. First operand 1212 states and 1674 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 11:44:41,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:44,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:46,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:51,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:53,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:44:53,782 INFO L93 Difference]: Finished difference Result 4018 states and 5662 transitions. [2022-07-21 11:44:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:44:53,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 144 [2022-07-21 11:44:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:44:53,799 INFO L225 Difference]: With dead ends: 4018 [2022-07-21 11:44:53,799 INFO L226 Difference]: Without dead ends: 2826 [2022-07-21 11:44:53,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:44:53,805 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 1572 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 805 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:44:53,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 2366 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 1054 Invalid, 5 Unknown, 0 Unchecked, 14.1s Time] [2022-07-21 11:44:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-07-21 11:44:53,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2337. [2022-07-21 11:44:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 1701 states have (on average 1.332745443856555) internal successors, (2267), 1734 states have internal predecessors, (2267), 483 states have call successors, (483), 152 states have call predecessors, (483), 152 states have return successors, (489), 472 states have call predecessors, (489), 481 states have call successors, (489) [2022-07-21 11:44:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3239 transitions. [2022-07-21 11:44:53,913 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3239 transitions. Word has length 144 [2022-07-21 11:44:53,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:44:53,913 INFO L495 AbstractCegarLoop]: Abstraction has 2337 states and 3239 transitions. [2022-07-21 11:44:53,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 11:44:53,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3239 transitions. [2022-07-21 11:44:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 11:44:53,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:44:53,917 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-07-21 11:44:53,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 11:44:53,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:44:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:44:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1630948905, now seen corresponding path program 1 times [2022-07-21 11:44:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:44:53,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193782124] [2022-07-21 11:44:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:44:53,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:44:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:44:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:44:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:44:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:44:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:44:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:44:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:44:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:44:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:44:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:44:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 11:44:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-21 11:44:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:44:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-21 11:44:54,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:44:54,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193782124] [2022-07-21 11:44:54,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193782124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:44:54,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:44:54,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:44:54,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534644188] [2022-07-21 11:44:54,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:44:54,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:44:54,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:44:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:44:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:44:54,250 INFO L87 Difference]: Start difference. First operand 2337 states and 3239 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 11:44:57,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:44:59,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:02,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:04,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:45:04,849 INFO L93 Difference]: Finished difference Result 4849 states and 6763 transitions. [2022-07-21 11:45:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:45:04,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 150 [2022-07-21 11:45:04,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:45:04,863 INFO L225 Difference]: With dead ends: 4849 [2022-07-21 11:45:04,863 INFO L226 Difference]: Without dead ends: 2536 [2022-07-21 11:45:04,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:45:04,872 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1185 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 592 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:45:04,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 1664 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 645 Invalid, 4 Unknown, 0 Unchecked, 10.4s Time] [2022-07-21 11:45:04,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2022-07-21 11:45:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2005. [2022-07-21 11:45:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 1460 states have (on average 1.3253424657534247) internal successors, (1935), 1485 states have internal predecessors, (1935), 403 states have call successors, (403), 142 states have call predecessors, (403), 141 states have return successors, (401), 393 states have call predecessors, (401), 401 states have call successors, (401) [2022-07-21 11:45:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 2739 transitions. [2022-07-21 11:45:04,963 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 2739 transitions. Word has length 150 [2022-07-21 11:45:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:45:04,964 INFO L495 AbstractCegarLoop]: Abstraction has 2005 states and 2739 transitions. [2022-07-21 11:45:04,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 11:45:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 2739 transitions. [2022-07-21 11:45:04,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-21 11:45:04,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:45:04,970 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:45:04,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 11:45:04,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:45:04,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:45:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2114242925, now seen corresponding path program 1 times [2022-07-21 11:45:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:45:04,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715350172] [2022-07-21 11:45:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:45:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:45:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:45:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:45:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:45:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:45:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:45:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:45:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:45:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:45:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 11:45:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 11:45:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 11:45:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-21 11:45:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-21 11:45:05,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:45:05,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715350172] [2022-07-21 11:45:05,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715350172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:45:05,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:45:05,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:45:05,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219450605] [2022-07-21 11:45:05,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:45:05,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:45:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:45:05,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:45:05,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:45:05,361 INFO L87 Difference]: Start difference. First operand 2005 states and 2739 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:45:08,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:10,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:14,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:16,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:16,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:45:16,910 INFO L93 Difference]: Finished difference Result 4611 states and 6384 transitions. [2022-07-21 11:45:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:45:16,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2022-07-21 11:45:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:45:16,925 INFO L225 Difference]: With dead ends: 4611 [2022-07-21 11:45:16,925 INFO L226 Difference]: Without dead ends: 2630 [2022-07-21 11:45:16,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:45:16,934 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1116 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 628 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:45:16,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 2356 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 1134 Invalid, 4 Unknown, 0 Unchecked, 11.3s Time] [2022-07-21 11:45:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2022-07-21 11:45:17,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2080. [2022-07-21 11:45:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1512 states have (on average 1.3326719576719577) internal successors, (2015), 1537 states have internal predecessors, (2015), 416 states have call successors, (416), 152 states have call predecessors, (416), 151 states have return successors, (414), 410 states have call predecessors, (414), 414 states have call successors, (414) [2022-07-21 11:45:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2845 transitions. [2022-07-21 11:45:17,022 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2845 transitions. Word has length 175 [2022-07-21 11:45:17,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:45:17,022 INFO L495 AbstractCegarLoop]: Abstraction has 2080 states and 2845 transitions. [2022-07-21 11:45:17,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:45:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2845 transitions. [2022-07-21 11:45:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-21 11:45:17,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:45:17,028 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:45:17,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 11:45:17,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:45:17,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:45:17,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1065041216, now seen corresponding path program 1 times [2022-07-21 11:45:17,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:45:17,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695553413] [2022-07-21 11:45:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:45:17,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:45:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:45:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:45:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:45:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:45:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:45:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:45:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:45:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:45:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:45:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 11:45:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-21 11:45:17,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:45:17,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695553413] [2022-07-21 11:45:17,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695553413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:45:17,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:45:17,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 11:45:17,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340210708] [2022-07-21 11:45:17,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:45:17,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:45:17,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:45:17,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:45:17,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:45:17,456 INFO L87 Difference]: Start difference. First operand 2080 states and 2845 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 11:45:20,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:24,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:25,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:45:25,305 INFO L93 Difference]: Finished difference Result 4838 states and 6911 transitions. [2022-07-21 11:45:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:45:25,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 178 [2022-07-21 11:45:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:45:25,324 INFO L225 Difference]: With dead ends: 4838 [2022-07-21 11:45:25,324 INFO L226 Difference]: Without dead ends: 3141 [2022-07-21 11:45:25,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:45:25,333 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 695 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 321 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:45:25,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 2908 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1231 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2022-07-21 11:45:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2022-07-21 11:45:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 2084. [2022-07-21 11:45:25,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1516 states have (on average 1.3317941952506596) internal successors, (2019), 1541 states have internal predecessors, (2019), 416 states have call successors, (416), 152 states have call predecessors, (416), 151 states have return successors, (414), 410 states have call predecessors, (414), 414 states have call successors, (414) [2022-07-21 11:45:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2849 transitions. [2022-07-21 11:45:25,448 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2849 transitions. Word has length 178 [2022-07-21 11:45:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:45:25,448 INFO L495 AbstractCegarLoop]: Abstraction has 2084 states and 2849 transitions. [2022-07-21 11:45:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 11:45:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2849 transitions. [2022-07-21 11:45:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 11:45:25,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:45:25,453 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:45:25,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 11:45:25,454 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:45:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:45:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1338240510, now seen corresponding path program 1 times [2022-07-21 11:45:25,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:45:25,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925323150] [2022-07-21 11:45:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:45:25,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:45:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:45:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:45:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:45:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:45:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:45:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:45:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:45:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:45:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:45:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 11:45:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-21 11:45:25,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:45:25,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925323150] [2022-07-21 11:45:25,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925323150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:45:25,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:45:25,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 11:45:25,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417253395] [2022-07-21 11:45:25,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:45:25,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:45:25,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:45:25,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:45:25,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:45:25,864 INFO L87 Difference]: Start difference. First operand 2084 states and 2849 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 11:45:29,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:33,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:35,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:45:35,901 INFO L93 Difference]: Finished difference Result 4846 states and 6919 transitions. [2022-07-21 11:45:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:45:35,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 179 [2022-07-21 11:45:35,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:45:35,925 INFO L225 Difference]: With dead ends: 4846 [2022-07-21 11:45:35,925 INFO L226 Difference]: Without dead ends: 3145 [2022-07-21 11:45:35,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:45:35,934 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 788 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 348 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:45:35,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2921 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1113 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2022-07-21 11:45:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2022-07-21 11:45:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 2084. [2022-07-21 11:45:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1516 states have (on average 1.3317941952506596) internal successors, (2019), 1541 states have internal predecessors, (2019), 416 states have call successors, (416), 152 states have call predecessors, (416), 151 states have return successors, (414), 410 states have call predecessors, (414), 414 states have call successors, (414) [2022-07-21 11:45:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2849 transitions. [2022-07-21 11:45:36,057 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2849 transitions. Word has length 179 [2022-07-21 11:45:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:45:36,057 INFO L495 AbstractCegarLoop]: Abstraction has 2084 states and 2849 transitions. [2022-07-21 11:45:36,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 11:45:36,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2849 transitions. [2022-07-21 11:45:36,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 11:45:36,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:45:36,063 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:45:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 11:45:36,064 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:45:36,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:45:36,064 INFO L85 PathProgramCache]: Analyzing trace with hash -463674758, now seen corresponding path program 1 times [2022-07-21 11:45:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:45:36,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124928150] [2022-07-21 11:45:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:45:36,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:45:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:45:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:45:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:45:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:45:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:45:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:45:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:45:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:45:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:45:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 11:45:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 11:45:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 11:45:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-21 11:45:36,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:45:36,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124928150] [2022-07-21 11:45:36,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124928150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:45:36,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:45:36,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 11:45:36,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014805809] [2022-07-21 11:45:36,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:45:36,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:45:36,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:45:36,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:45:36,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:45:36,566 INFO L87 Difference]: Start difference. First operand 2084 states and 2849 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:45:40,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:42,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:44,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:48,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:50,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:52,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:45:52,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:45:52,948 INFO L93 Difference]: Finished difference Result 4334 states and 6019 transitions. [2022-07-21 11:45:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:45:52,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 185 [2022-07-21 11:45:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:45:52,963 INFO L225 Difference]: With dead ends: 4334 [2022-07-21 11:45:52,964 INFO L226 Difference]: Without dead ends: 2633 [2022-07-21 11:45:52,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:45:52,972 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 397 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 321 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:45:52,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2606 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1247 Invalid, 6 Unknown, 0 Unchecked, 16.1s Time] [2022-07-21 11:45:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2022-07-21 11:45:53,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2088. [2022-07-21 11:45:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 1520 states have (on average 1.330921052631579) internal successors, (2023), 1545 states have internal predecessors, (2023), 416 states have call successors, (416), 152 states have call predecessors, (416), 151 states have return successors, (414), 410 states have call predecessors, (414), 414 states have call successors, (414) [2022-07-21 11:45:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2853 transitions. [2022-07-21 11:45:53,082 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2853 transitions. Word has length 185 [2022-07-21 11:45:53,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:45:53,083 INFO L495 AbstractCegarLoop]: Abstraction has 2088 states and 2853 transitions. [2022-07-21 11:45:53,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:45:53,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2853 transitions. [2022-07-21 11:45:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 11:45:53,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:45:53,088 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:45:53,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 11:45:53,089 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:45:53,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:45:53,089 INFO L85 PathProgramCache]: Analyzing trace with hash 255512636, now seen corresponding path program 1 times [2022-07-21 11:45:53,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:45:53,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888826333] [2022-07-21 11:45:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:45:53,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:45:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:45:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:45:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:45:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:45:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:45:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:45:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:45:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:45:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:45:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:45:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-21 11:45:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:45:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:45:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-21 11:45:53,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:45:53,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888826333] [2022-07-21 11:45:53,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888826333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:45:53,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:45:53,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 11:45:53,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46937973] [2022-07-21 11:45:53,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:45:53,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 11:45:53,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:45:53,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 11:45:53,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:45:53,798 INFO L87 Difference]: Start difference. First operand 2088 states and 2853 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 11:45:58,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:00,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:05,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:07,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:10,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:12,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:14,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:46:15,722 INFO L93 Difference]: Finished difference Result 5662 states and 8325 transitions. [2022-07-21 11:46:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 11:46:15,722 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 185 [2022-07-21 11:46:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:46:15,745 INFO L225 Difference]: With dead ends: 5662 [2022-07-21 11:46:15,745 INFO L226 Difference]: Without dead ends: 3957 [2022-07-21 11:46:15,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-07-21 11:46:15,753 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 1412 mSDsluCounter, 4455 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 512 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 5359 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:46:15,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 5359 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2562 Invalid, 7 Unknown, 0 Unchecked, 21.4s Time] [2022-07-21 11:46:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2022-07-21 11:46:15,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 2096. [2022-07-21 11:46:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1526 states have (on average 1.3296199213630406) internal successors, (2029), 1551 states have internal predecessors, (2029), 416 states have call successors, (416), 152 states have call predecessors, (416), 153 states have return successors, (418), 412 states have call predecessors, (418), 414 states have call successors, (418) [2022-07-21 11:46:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2863 transitions. [2022-07-21 11:46:15,904 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2863 transitions. Word has length 185 [2022-07-21 11:46:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:46:15,904 INFO L495 AbstractCegarLoop]: Abstraction has 2096 states and 2863 transitions. [2022-07-21 11:46:15,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 11:46:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2863 transitions. [2022-07-21 11:46:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-21 11:46:15,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:46:15,910 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:46:15,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 11:46:15,911 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:46:15,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:46:15,911 INFO L85 PathProgramCache]: Analyzing trace with hash -388615980, now seen corresponding path program 1 times [2022-07-21 11:46:15,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:46:15,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884891023] [2022-07-21 11:46:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:46:15,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:46:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:46:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:46:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:46:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:46:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:46:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:46:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:46:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:46:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:46:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 11:46:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 11:46:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 11:46:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 11:46:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-21 11:46:16,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:46:16,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884891023] [2022-07-21 11:46:16,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884891023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:46:16,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:46:16,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 11:46:16,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051870487] [2022-07-21 11:46:16,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:46:16,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 11:46:16,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:46:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 11:46:16,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:46:16,787 INFO L87 Difference]: Start difference. First operand 2096 states and 2863 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:46:21,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:23,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:28,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:30,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:31,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:46:31,413 INFO L93 Difference]: Finished difference Result 4364 states and 6055 transitions. [2022-07-21 11:46:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:46:31,414 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 197 [2022-07-21 11:46:31,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:46:31,429 INFO L225 Difference]: With dead ends: 4364 [2022-07-21 11:46:31,429 INFO L226 Difference]: Without dead ends: 2651 [2022-07-21 11:46:31,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-07-21 11:46:31,437 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 790 mSDsluCounter, 3803 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 655 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:46:31,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 4488 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 2019 Invalid, 4 Unknown, 0 Unchecked, 14.1s Time] [2022-07-21 11:46:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-07-21 11:46:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2108. [2022-07-21 11:46:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1534 states have (on average 1.3279009126466754) internal successors, (2037), 1559 states have internal predecessors, (2037), 416 states have call successors, (416), 152 states have call predecessors, (416), 157 states have return successors, (434), 416 states have call predecessors, (434), 414 states have call successors, (434) [2022-07-21 11:46:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2887 transitions. [2022-07-21 11:46:31,568 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2887 transitions. Word has length 197 [2022-07-21 11:46:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:46:31,568 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 2887 transitions. [2022-07-21 11:46:31,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:46:31,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2887 transitions. [2022-07-21 11:46:31,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-21 11:46:31,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:46:31,575 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:46:31,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 11:46:31,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:46:31,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:46:31,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1443188453, now seen corresponding path program 1 times [2022-07-21 11:46:31,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:46:31,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609327047] [2022-07-21 11:46:31,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:46:31,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:46:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:46:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:46:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:46:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:46:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:46:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:46:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:46:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:46:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:46:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 11:46:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 11:46:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 11:46:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-21 11:46:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-21 11:46:32,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:46:32,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609327047] [2022-07-21 11:46:32,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609327047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:46:32,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:46:32,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 11:46:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647712784] [2022-07-21 11:46:32,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:46:32,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 11:46:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:46:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 11:46:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:46:32,443 INFO L87 Difference]: Start difference. First operand 2108 states and 2887 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:46:36,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:38,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:43,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:45,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:48,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:50,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:46:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:46:51,240 INFO L93 Difference]: Finished difference Result 4763 states and 6744 transitions. [2022-07-21 11:46:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 11:46:51,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 196 [2022-07-21 11:46:51,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:46:51,255 INFO L225 Difference]: With dead ends: 4763 [2022-07-21 11:46:51,256 INFO L226 Difference]: Without dead ends: 3038 [2022-07-21 11:46:51,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-21 11:46:51,264 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 672 mSDsluCounter, 5304 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 450 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 6185 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:46:51,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 6185 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2190 Invalid, 6 Unknown, 0 Unchecked, 18.4s Time] [2022-07-21 11:46:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2022-07-21 11:46:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2112. [2022-07-21 11:46:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1538 states have (on average 1.3270481144343302) internal successors, (2041), 1561 states have internal predecessors, (2041), 416 states have call successors, (416), 152 states have call predecessors, (416), 157 states have return successors, (434), 418 states have call predecessors, (434), 414 states have call successors, (434) [2022-07-21 11:46:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2891 transitions. [2022-07-21 11:46:51,414 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2891 transitions. Word has length 196 [2022-07-21 11:46:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:46:51,416 INFO L495 AbstractCegarLoop]: Abstraction has 2112 states and 2891 transitions. [2022-07-21 11:46:51,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:46:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2891 transitions. [2022-07-21 11:46:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-21 11:46:51,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:46:51,422 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:46:51,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 11:46:51,422 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:46:51,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:46:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash 316291474, now seen corresponding path program 1 times [2022-07-21 11:46:51,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:46:51,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487912015] [2022-07-21 11:46:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:46:51,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:46:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:46:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:46:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:46:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:46:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:46:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:46:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:46:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:46:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:51,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:46:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:52,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 11:46:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:52,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:46:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:52,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:46:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:52,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 11:46:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:52,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-21 11:46:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-07-21 11:46:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:46:52,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487912015] [2022-07-21 11:46:52,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487912015] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:46:52,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389741277] [2022-07-21 11:46:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:46:52,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:46:52,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:46:52,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:46:52,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 11:46:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:52,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 11:46:52,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:46:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-21 11:46:53,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:46:53,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389741277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:46:53,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:46:53,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2022-07-21 11:46:53,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49696063] [2022-07-21 11:46:53,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:46:53,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:46:53,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:46:53,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:46:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:46:53,070 INFO L87 Difference]: Start difference. First operand 2112 states and 2891 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 11:46:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:46:53,435 INFO L93 Difference]: Finished difference Result 4216 states and 5809 transitions. [2022-07-21 11:46:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:46:53,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 203 [2022-07-21 11:46:53,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:46:53,452 INFO L225 Difference]: With dead ends: 4216 [2022-07-21 11:46:53,453 INFO L226 Difference]: Without dead ends: 2117 [2022-07-21 11:46:53,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:46:53,462 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 6 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:46:53,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3554 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:46:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2022-07-21 11:46:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2117. [2022-07-21 11:46:53,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 1543 states have (on average 1.3259883344134802) internal successors, (2046), 1566 states have internal predecessors, (2046), 416 states have call successors, (416), 152 states have call predecessors, (416), 157 states have return successors, (434), 418 states have call predecessors, (434), 414 states have call successors, (434) [2022-07-21 11:46:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 2896 transitions. [2022-07-21 11:46:53,587 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 2896 transitions. Word has length 203 [2022-07-21 11:46:53,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:46:53,587 INFO L495 AbstractCegarLoop]: Abstraction has 2117 states and 2896 transitions. [2022-07-21 11:46:53,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 11:46:53,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 2896 transitions. [2022-07-21 11:46:53,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-21 11:46:53,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:46:53,593 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:46:53,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 11:46:53,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 11:46:53,808 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:46:53,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:46:53,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1629733937, now seen corresponding path program 1 times [2022-07-21 11:46:53,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:46:53,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783230243] [2022-07-21 11:46:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:46:53,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:46:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:46:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:46:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:46:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:46:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:46:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:46:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:46:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:46:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 11:46:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 11:46:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-21 11:46:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:46:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:46:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 11:46:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 11:46:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-21 11:46:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-21 11:46:54,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:46:54,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783230243] [2022-07-21 11:46:54,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783230243] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:46:54,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743957655] [2022-07-21 11:46:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:46:54,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:46:54,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:46:54,591 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:46:54,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 11:46:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:46:55,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 2263 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 11:46:55,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:46:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-21 11:46:55,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:46:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-21 11:46:56,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743957655] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:46:56,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:46:56,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 18 [2022-07-21 11:46:56,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545539596] [2022-07-21 11:46:56,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:46:56,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 11:46:56,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:46:56,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 11:46:56,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-07-21 11:46:56,670 INFO L87 Difference]: Start difference. First operand 2117 states and 2896 transitions. Second operand has 18 states, 16 states have (on average 8.5) internal successors, (136), 13 states have internal predecessors, (136), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-21 11:47:03,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:47:05,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:47:11,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:47:13,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:47:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:47:15,231 INFO L93 Difference]: Finished difference Result 4735 states and 6580 transitions. [2022-07-21 11:47:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 11:47:15,231 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.5) internal successors, (136), 13 states have internal predecessors, (136), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 204 [2022-07-21 11:47:15,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:47:15,241 INFO L225 Difference]: With dead ends: 4735 [2022-07-21 11:47:15,242 INFO L226 Difference]: Without dead ends: 2631 [2022-07-21 11:47:15,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 452 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2022-07-21 11:47:15,250 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 570 mSDsluCounter, 5589 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 499 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:47:15,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 6251 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 2863 Invalid, 4 Unknown, 0 Unchecked, 17.6s Time] [2022-07-21 11:47:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2022-07-21 11:47:15,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2127. [2022-07-21 11:47:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 1551 states have (on average 1.324306898774984) internal successors, (2054), 1574 states have internal predecessors, (2054), 417 states have call successors, (417), 153 states have call predecessors, (417), 158 states have return successors, (435), 419 states have call predecessors, (435), 415 states have call successors, (435) [2022-07-21 11:47:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 2906 transitions. [2022-07-21 11:47:15,371 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 2906 transitions. Word has length 204 [2022-07-21 11:47:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:47:15,371 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 2906 transitions. [2022-07-21 11:47:15,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.5) internal successors, (136), 13 states have internal predecessors, (136), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-21 11:47:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 2906 transitions. [2022-07-21 11:47:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-21 11:47:15,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:47:15,378 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:47:15,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 11:47:15,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 11:47:15,604 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:47:15,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:47:15,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1687797189, now seen corresponding path program 2 times [2022-07-21 11:47:15,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:47:15,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15719379] [2022-07-21 11:47:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:47:15,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:47:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:47:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:47:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:47:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:47:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:47:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:47:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:15,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:47:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 11:47:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 11:47:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 11:47:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:47:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-21 11:47:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 11:47:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 11:47:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-07-21 11:47:16,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:47:16,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15719379] [2022-07-21 11:47:16,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15719379] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:47:16,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888907767] [2022-07-21 11:47:16,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 11:47:16,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:47:16,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:47:16,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:47:16,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 11:47:17,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 11:47:17,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 11:47:17,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 2293 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 11:47:17,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:47:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 33 proven. 10 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-21 11:47:18,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:47:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-07-21 11:47:18,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888907767] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:47:18,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:47:18,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 22 [2022-07-21 11:47:18,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849276125] [2022-07-21 11:47:18,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:47:18,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 11:47:18,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:47:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 11:47:18,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-07-21 11:47:18,900 INFO L87 Difference]: Start difference. First operand 2127 states and 2906 transitions. Second operand has 22 states, 20 states have (on average 6.8) internal successors, (136), 17 states have internal predecessors, (136), 4 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-21 11:47:24,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:47:26,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:47:32,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:47:34,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:47:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:47:35,454 INFO L93 Difference]: Finished difference Result 4748 states and 6592 transitions. [2022-07-21 11:47:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 11:47:35,455 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 6.8) internal successors, (136), 17 states have internal predecessors, (136), 4 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) Word has length 206 [2022-07-21 11:47:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:47:35,463 INFO L225 Difference]: With dead ends: 4748 [2022-07-21 11:47:35,463 INFO L226 Difference]: Without dead ends: 2636 [2022-07-21 11:47:35,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 452 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=184, Invalid=938, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 11:47:35,468 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 548 mSDsluCounter, 5734 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 398 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 6409 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:47:35,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 6409 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 2877 Invalid, 4 Unknown, 0 Unchecked, 15.8s Time] [2022-07-21 11:47:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-07-21 11:47:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2132. [2022-07-21 11:47:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1556 states have (on average 1.3232647814910026) internal successors, (2059), 1579 states have internal predecessors, (2059), 417 states have call successors, (417), 153 states have call predecessors, (417), 158 states have return successors, (435), 419 states have call predecessors, (435), 415 states have call successors, (435) [2022-07-21 11:47:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2911 transitions. [2022-07-21 11:47:35,594 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2911 transitions. Word has length 206 [2022-07-21 11:47:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:47:35,594 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 2911 transitions. [2022-07-21 11:47:35,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 6.8) internal successors, (136), 17 states have internal predecessors, (136), 4 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-21 11:47:35,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2911 transitions. [2022-07-21 11:47:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-21 11:47:35,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:47:35,600 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:47:35,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 11:47:35,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:47:35,824 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:47:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:47:35,824 INFO L85 PathProgramCache]: Analyzing trace with hash -161886065, now seen corresponding path program 1 times [2022-07-21 11:47:35,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:47:35,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210380430] [2022-07-21 11:47:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:47:35,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:47:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:47:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 11:47:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 11:47:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:47:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:47:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 11:47:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:47:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 11:47:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 11:47:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 11:47:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 11:47:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:47:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:47:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 11:47:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-21 11:47:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 11:47:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-07-21 11:47:36,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:47:36,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210380430] [2022-07-21 11:47:36,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210380430] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:47:36,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995376718] [2022-07-21 11:47:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:47:36,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:47:36,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:47:36,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:47:36,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 11:47:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:47:37,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 11:47:37,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:47:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-07-21 11:47:38,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:47:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-07-21 11:47:39,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995376718] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:47:39,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:47:39,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 24 [2022-07-21 11:47:39,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719939386] [2022-07-21 11:47:39,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:47:39,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 11:47:39,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:47:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 11:47:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2022-07-21 11:47:39,090 INFO L87 Difference]: Start difference. First operand 2132 states and 2911 transitions. Second operand has 24 states, 22 states have (on average 6.454545454545454) internal successors, (142), 19 states have internal predecessors, (142), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31)