./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.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 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 05:12:06,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 05:12:06,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 05:12:06,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 05:12:06,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 05:12:06,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 05:12:06,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 05:12:06,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 05:12:06,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 05:12:06,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 05:12:06,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 05:12:06,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 05:12:06,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 05:12:06,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 05:12:06,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 05:12:06,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 05:12:06,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 05:12:06,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 05:12:06,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 05:12:06,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 05:12:06,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 05:12:06,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 05:12:06,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 05:12:06,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 05:12:06,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 05:12:06,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 05:12:06,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 05:12:06,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 05:12:06,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 05:12:06,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 05:12:06,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 05:12:06,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 05:12:06,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 05:12:06,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 05:12:06,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 05:12:06,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 05:12:06,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 05:12:06,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 05:12:06,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 05:12:06,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 05:12:06,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 05:12:06,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 05:12:06,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 05:12:06,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 05:12:06,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 05:12:06,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 05:12:06,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 05:12:06,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 05:12:06,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 05:12:06,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 05:12:06,839 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 05:12:06,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 05:12:06,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 05:12:06,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 05:12:06,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 05:12:06,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 05:12:06,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 05:12:06,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 05:12:06,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 05:12:06,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 05:12:06,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 05:12:06,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 05:12:06,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 05:12:06,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 05:12:06,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 05:12:06,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 05:12:06,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 05:12:06,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 05:12:06,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 05:12:06,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 05:12:06,843 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 05:12:06,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 05:12:06,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 05:12:06,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e [2021-12-18 05:12:07,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 05:12:07,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 05:12:07,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 05:12:07,102 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 05:12:07,103 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 05:12:07,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2021-12-18 05:12:07,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f220972f/59a4feb53aaa4b0282dd5bfd1617059a/FLAG3a4966f1e [2021-12-18 05:12:07,926 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 05:12:07,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2021-12-18 05:12:07,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f220972f/59a4feb53aaa4b0282dd5bfd1617059a/FLAG3a4966f1e [2021-12-18 05:12:08,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f220972f/59a4feb53aaa4b0282dd5bfd1617059a [2021-12-18 05:12:08,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 05:12:08,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 05:12:08,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 05:12:08,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 05:12:08,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 05:12:08,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:12:08" (1/1) ... [2021-12-18 05:12:08,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d079037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:08, skipping insertion in model container [2021-12-18 05:12:08,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:12:08" (1/1) ... [2021-12-18 05:12:08,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 05:12:08,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 05:12:08,902 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-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2021-12-18 05:12:09,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 05:12:09,569 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 05:12:09,684 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-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2021-12-18 05:12:09,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 05:12:09,961 INFO L208 MainTranslator]: Completed translation [2021-12-18 05:12:09,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09 WrapperNode [2021-12-18 05:12:09,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 05:12:09,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 05:12:09,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 05:12:09,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 05:12:09,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (1/1) ... [2021-12-18 05:12:10,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (1/1) ... [2021-12-18 05:12:10,145 INFO L137 Inliner]: procedures = 184, calls = 828, calls flagged for inlining = 92, calls inlined = 90, statements flattened = 3179 [2021-12-18 05:12:10,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 05:12:10,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 05:12:10,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 05:12:10,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 05:12:10,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (1/1) ... [2021-12-18 05:12:10,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (1/1) ... [2021-12-18 05:12:10,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (1/1) ... [2021-12-18 05:12:10,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (1/1) ... [2021-12-18 05:12:10,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (1/1) ... [2021-12-18 05:12:10,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (1/1) ... [2021-12-18 05:12:10,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (1/1) ... [2021-12-18 05:12:10,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 05:12:10,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 05:12:10,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 05:12:10,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 05:12:10,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (1/1) ... [2021-12-18 05:12:10,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 05:12:10,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:12:10,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 05:12:10,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 05:12:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2021-12-18 05:12:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2021-12-18 05:12:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2021-12-18 05:12:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2021-12-18 05:12:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 05:12:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-18 05:12:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-18 05:12:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-18 05:12:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 05:12:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 05:12:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 05:12:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 05:12:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 05:12:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-18 05:12:10,452 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-18 05:12:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-18 05:12:10,452 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-18 05:12:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-12-18 05:12:10,452 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-12-18 05:12:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 05:12:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 05:12:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-18 05:12:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-18 05:12:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 05:12:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 05:12:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 05:12:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 05:12:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-18 05:12:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-18 05:12:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 05:12:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 05:12:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2021-12-18 05:12:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2021-12-18 05:12:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 05:12:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 05:12:10,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 05:12:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 05:12:10,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 05:12:10,455 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-18 05:12:10,456 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-18 05:12:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 05:12:10,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 05:12:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 05:12:10,456 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 05:12:10,456 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-18 05:12:10,456 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-18 05:12:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 05:12:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-18 05:12:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-18 05:12:10,457 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2021-12-18 05:12:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2021-12-18 05:12:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2021-12-18 05:12:10,458 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2021-12-18 05:12:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 05:12:10,458 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-18 05:12:10,458 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-18 05:12:10,459 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2021-12-18 05:12:10,460 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2021-12-18 05:12:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 05:12:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 05:12:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 05:12:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-18 05:12:10,461 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-18 05:12:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2021-12-18 05:12:10,461 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2021-12-18 05:12:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-18 05:12:10,461 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-18 05:12:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2021-12-18 05:12:10,461 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2021-12-18 05:12:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 05:12:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-18 05:12:10,462 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-18 05:12:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-18 05:12:10,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-18 05:12:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-18 05:12:10,463 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-18 05:12:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2021-12-18 05:12:10,463 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2021-12-18 05:12:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2021-12-18 05:12:10,463 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2021-12-18 05:12:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 05:12:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-12-18 05:12:10,464 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-12-18 05:12:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 05:12:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2021-12-18 05:12:10,464 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2021-12-18 05:12:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-18 05:12:10,464 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-18 05:12:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2021-12-18 05:12:10,465 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2021-12-18 05:12:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 05:12:10,465 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 05:12:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-18 05:12:10,466 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-18 05:12:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2021-12-18 05:12:10,467 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2021-12-18 05:12:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-12-18 05:12:10,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-12-18 05:12:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 05:12:10,467 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 05:12:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 05:12:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 05:12:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 05:12:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 05:12:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-18 05:12:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-18 05:12:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 05:12:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-18 05:12:10,469 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-18 05:12:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-12-18 05:12:10,469 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-12-18 05:12:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-18 05:12:10,470 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-18 05:12:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 05:12:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-18 05:12:10,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-18 05:12:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 05:12:10,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 05:12:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2021-12-18 05:12:10,473 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2021-12-18 05:12:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-18 05:12:10,474 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-18 05:12:10,949 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 05:12:10,964 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 05:12:11,194 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 05:12:13,329 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 05:12:13,351 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 05:12:13,352 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 05:12:13,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:12:13 BoogieIcfgContainer [2021-12-18 05:12:13,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 05:12:13,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 05:12:13,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 05:12:13,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 05:12:13,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 05:12:08" (1/3) ... [2021-12-18 05:12:13,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77691736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:12:13, skipping insertion in model container [2021-12-18 05:12:13,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:12:09" (2/3) ... [2021-12-18 05:12:13,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77691736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:12:13, skipping insertion in model container [2021-12-18 05:12:13,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:12:13" (3/3) ... [2021-12-18 05:12:13,367 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2021-12-18 05:12:13,371 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 05:12:13,372 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 05:12:13,417 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 05:12:13,422 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 05:12:13,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 05:12:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 1086 states, 804 states have (on average 1.4291044776119404) internal successors, (1149), 837 states have internal predecessors, (1149), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2021-12-18 05:12:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-18 05:12:13,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:12:13,474 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:12:13,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:12:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:12:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1674136558, now seen corresponding path program 1 times [2021-12-18 05:12:13,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:12:13,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964059425] [2021-12-18 05:12:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:13,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:12:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:13,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:12:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:13,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:12:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:12:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:12:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:13,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:12:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:13,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:12:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:13,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:12:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 05:12:14,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:12:14,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964059425] [2021-12-18 05:12:14,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964059425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:12:14,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:12:14,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 05:12:14,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880084383] [2021-12-18 05:12:14,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:12:14,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 05:12:14,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:12:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 05:12:14,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 05:12:14,068 INFO L87 Difference]: Start difference. First operand has 1086 states, 804 states have (on average 1.4291044776119404) internal successors, (1149), 837 states have internal predecessors, (1149), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 05:12:16,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:12:18,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:12:18,916 INFO L93 Difference]: Finished difference Result 2922 states and 4363 transitions. [2021-12-18 05:12:18,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 05:12:18,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2021-12-18 05:12:18,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:12:18,954 INFO L225 Difference]: With dead ends: 2922 [2021-12-18 05:12:18,954 INFO L226 Difference]: Without dead ends: 1756 [2021-12-18 05:12:18,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 05:12:18,974 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1443 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-18 05:12:18,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1569 Valid, 3435 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-18 05:12:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2021-12-18 05:12:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1600. [2021-12-18 05:12:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1178 states have (on average 1.403225806451613) internal successors, (1653), 1211 states have internal predecessors, (1653), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2021-12-18 05:12:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2318 transitions. [2021-12-18 05:12:19,152 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2318 transitions. Word has length 63 [2021-12-18 05:12:19,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:12:19,153 INFO L470 AbstractCegarLoop]: Abstraction has 1600 states and 2318 transitions. [2021-12-18 05:12:19,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 05:12:19,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2318 transitions. [2021-12-18 05:12:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-18 05:12:19,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:12:19,169 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:12:19,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 05:12:19,169 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:12:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:12:19,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2079290676, now seen corresponding path program 1 times [2021-12-18 05:12:19,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:12:19,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349538949] [2021-12-18 05:12:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:19,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:12:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:12:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:12:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:12:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:12:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:12:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:12:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:12:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:12:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:12:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 05:12:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 05:12:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-18 05:12:19,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:12:19,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349538949] [2021-12-18 05:12:19,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349538949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:12:19,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:12:19,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 05:12:19,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148180602] [2021-12-18 05:12:19,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:12:19,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 05:12:19,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:12:19,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 05:12:19,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 05:12:19,378 INFO L87 Difference]: Start difference. First operand 1600 states and 2318 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-18 05:12:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:12:21,304 INFO L93 Difference]: Finished difference Result 3366 states and 4935 transitions. [2021-12-18 05:12:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 05:12:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2021-12-18 05:12:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:12:21,317 INFO L225 Difference]: With dead ends: 3366 [2021-12-18 05:12:21,317 INFO L226 Difference]: Without dead ends: 1790 [2021-12-18 05:12:21,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:12:21,324 INFO L933 BasicCegarLoop]: 1469 mSDtfsCounter, 2268 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-18 05:12:21,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2399 Valid, 2065 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-18 05:12:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-12-18 05:12:21,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1600. [2021-12-18 05:12:21,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1178 states have (on average 1.401528013582343) internal successors, (1651), 1211 states have internal predecessors, (1651), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2021-12-18 05:12:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2316 transitions. [2021-12-18 05:12:21,386 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2316 transitions. Word has length 104 [2021-12-18 05:12:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:12:21,387 INFO L470 AbstractCegarLoop]: Abstraction has 1600 states and 2316 transitions. [2021-12-18 05:12:21,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-18 05:12:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2316 transitions. [2021-12-18 05:12:21,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-18 05:12:21,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:12:21,393 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:12:21,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 05:12:21,394 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:12:21,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:12:21,394 INFO L85 PathProgramCache]: Analyzing trace with hash 187090510, now seen corresponding path program 1 times [2021-12-18 05:12:21,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:12:21,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865124150] [2021-12-18 05:12:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:21,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:12:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:12:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:12:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:12:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:12:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:12:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:12:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:12:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:12:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:12:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 05:12:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 05:12:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-18 05:12:21,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:12:21,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865124150] [2021-12-18 05:12:21,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865124150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:12:21,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:12:21,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 05:12:21,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92018230] [2021-12-18 05:12:21,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:12:21,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:12:21,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:12:21,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:12:21,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:12:21,598 INFO L87 Difference]: Start difference. First operand 1600 states and 2316 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 05:12:25,728 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 [] [2021-12-18 05:12:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:12:27,311 INFO L93 Difference]: Finished difference Result 3370 states and 4935 transitions. [2021-12-18 05:12:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 05:12:27,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 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 104 [2021-12-18 05:12:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:12:27,322 INFO L225 Difference]: With dead ends: 3370 [2021-12-18 05:12:27,323 INFO L226 Difference]: Without dead ends: 1790 [2021-12-18 05:12:27,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:12:27,330 INFO L933 BasicCegarLoop]: 1480 mSDtfsCounter, 1008 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 525 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-18 05:12:27,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 4233 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 1582 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-12-18 05:12:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-12-18 05:12:27,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1600. [2021-12-18 05:12:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1178 states have (on average 1.399830220713073) internal successors, (1649), 1211 states have internal predecessors, (1649), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2021-12-18 05:12:27,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2314 transitions. [2021-12-18 05:12:27,388 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2314 transitions. Word has length 104 [2021-12-18 05:12:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:12:27,390 INFO L470 AbstractCegarLoop]: Abstraction has 1600 states and 2314 transitions. [2021-12-18 05:12:27,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 05:12:27,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2314 transitions. [2021-12-18 05:12:27,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-18 05:12:27,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:12:27,398 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-18 05:12:27,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 05:12:27,399 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:12:27,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:12:27,399 INFO L85 PathProgramCache]: Analyzing trace with hash -540695394, now seen corresponding path program 1 times [2021-12-18 05:12:27,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:12:27,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456166985] [2021-12-18 05:12:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:27,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:12:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:12:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:12:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:12:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:12:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:12:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:12:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:12:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:12:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:12:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 05:12:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 05:12:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-18 05:12:27,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:12:27,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456166985] [2021-12-18 05:12:27,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456166985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:12:27,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:12:27,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 05:12:27,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309908617] [2021-12-18 05:12:27,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:12:27,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:12:27,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:12:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:12:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:12:27,638 INFO L87 Difference]: Start difference. First operand 1600 states and 2314 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-18 05:12:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:12:31,670 INFO L93 Difference]: Finished difference Result 2381 states and 3634 transitions. [2021-12-18 05:12:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:12:31,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 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 107 [2021-12-18 05:12:31,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:12:31,686 INFO L225 Difference]: With dead ends: 2381 [2021-12-18 05:12:31,687 INFO L226 Difference]: Without dead ends: 2378 [2021-12-18 05:12:31,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:12:31,689 INFO L933 BasicCegarLoop]: 2110 mSDtfsCounter, 1343 mSDsluCounter, 4428 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 6538 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-18 05:12:31,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 6538 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-18 05:12:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2021-12-18 05:12:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 1602. [2021-12-18 05:12:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1180 states have (on average 1.3991525423728814) internal successors, (1651), 1213 states have internal predecessors, (1651), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2021-12-18 05:12:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2316 transitions. [2021-12-18 05:12:31,761 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2316 transitions. Word has length 107 [2021-12-18 05:12:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:12:31,762 INFO L470 AbstractCegarLoop]: Abstraction has 1602 states and 2316 transitions. [2021-12-18 05:12:31,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-18 05:12:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2316 transitions. [2021-12-18 05:12:31,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-18 05:12:31,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:12:31,767 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:12:31,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 05:12:31,767 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:12:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:12:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash -756513172, now seen corresponding path program 1 times [2021-12-18 05:12:31,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:12:31,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125781996] [2021-12-18 05:12:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:31,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:12:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:12:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:12:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:12:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:12:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:12:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:12:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:12:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:12:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:12:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 05:12:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:31,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 05:12:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 05:12:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-18 05:12:32,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:12:32,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125781996] [2021-12-18 05:12:32,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125781996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:12:32,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:12:32,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 05:12:32,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965183357] [2021-12-18 05:12:32,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:12:32,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:12:32,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:12:32,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:12:32,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:12:32,010 INFO L87 Difference]: Start difference. First operand 1602 states and 2316 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-18 05:12:34,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:12:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:12:36,644 INFO L93 Difference]: Finished difference Result 3959 states and 5919 transitions. [2021-12-18 05:12:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:12:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-12-18 05:12:36,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:12:36,659 INFO L225 Difference]: With dead ends: 3959 [2021-12-18 05:12:36,659 INFO L226 Difference]: Without dead ends: 2381 [2021-12-18 05:12:36,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-18 05:12:36,667 INFO L933 BasicCegarLoop]: 1836 mSDtfsCounter, 2434 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 732 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-18 05:12:36,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2691 Valid, 4181 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 2122 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-12-18 05:12:36,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-12-18 05:12:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1603. [2021-12-18 05:12:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1181 states have (on average 1.3988145639288738) internal successors, (1652), 1214 states have internal predecessors, (1652), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2021-12-18 05:12:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2317 transitions. [2021-12-18 05:12:36,738 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2317 transitions. Word has length 117 [2021-12-18 05:12:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:12:36,738 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 2317 transitions. [2021-12-18 05:12:36,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-18 05:12:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2317 transitions. [2021-12-18 05:12:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-18 05:12:36,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:12:36,744 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-18 05:12:36,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 05:12:36,744 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:12:36,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:12:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1902158187, now seen corresponding path program 1 times [2021-12-18 05:12:36,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:12:36,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129284948] [2021-12-18 05:12:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:36,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:12:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:12:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:12:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:12:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:12:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:12:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:12:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:12:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:12:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:12:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 05:12:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 05:12:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 05:12:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-18 05:12:36,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:12:36,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129284948] [2021-12-18 05:12:36,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129284948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:12:36,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:12:36,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 05:12:36,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880214439] [2021-12-18 05:12:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:12:36,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 05:12:36,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:12:36,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 05:12:36,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:12:36,950 INFO L87 Difference]: Start difference. First operand 1603 states and 2317 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 05:12:39,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:12:41,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:12:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:12:44,370 INFO L93 Difference]: Finished difference Result 3313 states and 5203 transitions. [2021-12-18 05:12:44,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 05:12:44,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2021-12-18 05:12:44,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:12:44,388 INFO L225 Difference]: With dead ends: 3313 [2021-12-18 05:12:44,388 INFO L226 Difference]: Without dead ends: 3310 [2021-12-18 05:12:44,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-18 05:12:44,391 INFO L933 BasicCegarLoop]: 2553 mSDtfsCounter, 2187 mSDsluCounter, 7211 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 9764 SdHoareTripleChecker+Invalid, 3849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:12:44,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2402 Valid, 9764 Invalid, 3849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-12-18 05:12:44,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2021-12-18 05:12:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 1605. [2021-12-18 05:12:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1182 states have (on average 1.398477157360406) internal successors, (1653), 1214 states have internal predecessors, (1653), 334 states have call successors, (334), 89 states have call predecessors, (334), 88 states have return successors, (333), 330 states have call predecessors, (333), 333 states have call successors, (333) [2021-12-18 05:12:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2320 transitions. [2021-12-18 05:12:44,476 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2320 transitions. Word has length 119 [2021-12-18 05:12:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:12:44,477 INFO L470 AbstractCegarLoop]: Abstraction has 1605 states and 2320 transitions. [2021-12-18 05:12:44,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 05:12:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2320 transitions. [2021-12-18 05:12:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-18 05:12:44,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:12:44,484 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:12:44,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 05:12:44,485 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:12:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:12:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash 647562230, now seen corresponding path program 1 times [2021-12-18 05:12:44,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:12:44,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407761526] [2021-12-18 05:12:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:44,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:12:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:12:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:12:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:12:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:12:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:12:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:12:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:12:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:12:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:12:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 05:12:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 05:12:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 05:12:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:12:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 05:12:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 05:12:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-18 05:12:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-18 05:12:44,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:12:44,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407761526] [2021-12-18 05:12:44,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407761526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:12:44,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:12:44,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 05:12:44,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107264929] [2021-12-18 05:12:44,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:12:44,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 05:12:44,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:12:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 05:12:44,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 05:12:44,700 INFO L87 Difference]: Start difference. First operand 1605 states and 2320 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 05:12:48,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:12:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:12:50,564 INFO L93 Difference]: Finished difference Result 3999 states and 5840 transitions. [2021-12-18 05:12:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:12:50,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2021-12-18 05:12:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:12:50,576 INFO L225 Difference]: With dead ends: 3999 [2021-12-18 05:12:50,576 INFO L226 Difference]: Without dead ends: 2418 [2021-12-18 05:12:50,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:12:50,582 INFO L933 BasicCegarLoop]: 2204 mSDtfsCounter, 2289 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 887 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 3667 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 887 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-18 05:12:50,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2474 Valid, 3667 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [887 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-18 05:12:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2021-12-18 05:12:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2145. [2021-12-18 05:12:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1571 states have (on average 1.3908338637810311) internal successors, (2185), 1612 states have internal predecessors, (2185), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-18 05:12:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3080 transitions. [2021-12-18 05:12:50,677 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3080 transitions. Word has length 149 [2021-12-18 05:12:50,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:12:50,677 INFO L470 AbstractCegarLoop]: Abstraction has 2145 states and 3080 transitions. [2021-12-18 05:12:50,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 05:12:50,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3080 transitions. [2021-12-18 05:12:50,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-18 05:12:50,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:12:50,686 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:12:50,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 05:12:50,687 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:12:50,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:12:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash -713832836, now seen corresponding path program 1 times [2021-12-18 05:12:50,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:12:50,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809818100] [2021-12-18 05:12:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:50,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:12:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:12:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:12:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:12:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:12:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:12:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:12:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:12:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:12:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:12:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 05:12:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 05:12:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 05:12:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 05:12:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 05:12:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 05:12:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 05:12:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 05:12:50,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:12:50,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809818100] [2021-12-18 05:12:50,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809818100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:12:50,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:12:50,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 05:12:50,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936453159] [2021-12-18 05:12:50,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:12:50,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:12:50,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:12:50,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:12:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:12:50,909 INFO L87 Difference]: Start difference. First operand 2145 states and 3080 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 05:12:53,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:12:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:12:55,565 INFO L93 Difference]: Finished difference Result 4588 states and 6826 transitions. [2021-12-18 05:12:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:12:55,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2021-12-18 05:12:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:12:55,580 INFO L225 Difference]: With dead ends: 4588 [2021-12-18 05:12:55,581 INFO L226 Difference]: Without dead ends: 3007 [2021-12-18 05:12:55,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-18 05:12:55,588 INFO L933 BasicCegarLoop]: 2006 mSDtfsCounter, 2278 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 668 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 4607 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-18 05:12:55,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2531 Valid, 4607 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2191 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-12-18 05:12:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-12-18 05:12:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2149. [2021-12-18 05:12:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1575 states have (on average 1.3904761904761904) internal successors, (2190), 1616 states have internal predecessors, (2190), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-18 05:12:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3085 transitions. [2021-12-18 05:12:55,727 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3085 transitions. Word has length 151 [2021-12-18 05:12:55,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:12:55,727 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3085 transitions. [2021-12-18 05:12:55,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 05:12:55,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3085 transitions. [2021-12-18 05:12:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-18 05:12:55,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:12:55,738 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:12:55,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 05:12:55,739 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:12:55,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:12:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash -134166477, now seen corresponding path program 1 times [2021-12-18 05:12:55,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:12:55,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070032927] [2021-12-18 05:12:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:55,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:12:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:12:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:12:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:12:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:12:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:12:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:12:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:12:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:12:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:12:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 05:12:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 05:12:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 05:12:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 05:12:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 05:12:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:12:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 05:12:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-18 05:12:55,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:12:55,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070032927] [2021-12-18 05:12:55,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070032927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:12:55,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:12:55,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 05:12:55,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900836110] [2021-12-18 05:12:55,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:12:55,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 05:12:55,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:12:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 05:12:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 05:12:55,896 INFO L87 Difference]: Start difference. First operand 2149 states and 3085 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 05:12:58,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:12:59,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:12:59,101 INFO L93 Difference]: Finished difference Result 4548 states and 6642 transitions. [2021-12-18 05:12:59,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 05:12:59,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2021-12-18 05:12:59,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:12:59,112 INFO L225 Difference]: With dead ends: 4548 [2021-12-18 05:12:59,113 INFO L226 Difference]: Without dead ends: 2423 [2021-12-18 05:12:59,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:12:59,120 INFO L933 BasicCegarLoop]: 1476 mSDtfsCounter, 995 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 05:12:59,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 3159 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-18 05:12:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2021-12-18 05:12:59,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2149. [2021-12-18 05:12:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1575 states have (on average 1.3847619047619049) internal successors, (2181), 1616 states have internal predecessors, (2181), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-18 05:12:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3076 transitions. [2021-12-18 05:12:59,259 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3076 transitions. Word has length 154 [2021-12-18 05:12:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:12:59,260 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3076 transitions. [2021-12-18 05:12:59,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 05:12:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3076 transitions. [2021-12-18 05:12:59,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-18 05:12:59,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:12:59,271 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:12:59,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 05:12:59,271 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:12:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:12:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash -394171254, now seen corresponding path program 1 times [2021-12-18 05:12:59,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:12:59,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295306887] [2021-12-18 05:12:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:59,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:12:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:12:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:12:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:12:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:12:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:12:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:12:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:12:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:12:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:12:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 05:12:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 05:12:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 05:12:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 05:12:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 05:12:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 05:12:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 05:12:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 05:12:59,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:12:59,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295306887] [2021-12-18 05:12:59,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295306887] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:12:59,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266506145] [2021-12-18 05:12:59,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:12:59,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:12:59,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:12:59,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:12:59,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 05:12:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:12:59,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 05:12:59,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:13:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-18 05:13:00,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 05:13:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 05:13:00,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266506145] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 05:13:00,617 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 05:13:00,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 5] total 12 [2021-12-18 05:13:00,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285001761] [2021-12-18 05:13:00,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 05:13:00,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 05:13:00,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:13:00,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 05:13:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-12-18 05:13:00,619 INFO L87 Difference]: Start difference. First operand 2149 states and 3076 transitions. Second operand has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 10 states have internal predecessors, (185), 4 states have call successors, (45), 5 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2021-12-18 05:13:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:13:06,088 INFO L93 Difference]: Finished difference Result 6342 states and 9749 transitions. [2021-12-18 05:13:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 05:13:06,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 10 states have internal predecessors, (185), 4 states have call successors, (45), 5 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) Word has length 157 [2021-12-18 05:13:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:13:06,112 INFO L225 Difference]: With dead ends: 6342 [2021-12-18 05:13:06,112 INFO L226 Difference]: Without dead ends: 4757 [2021-12-18 05:13:06,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-18 05:13:06,121 INFO L933 BasicCegarLoop]: 2560 mSDtfsCounter, 5646 mSDsluCounter, 4712 mSDsCounter, 0 mSdLazyCounter, 4304 mSolverCounterSat, 2058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6024 SdHoareTripleChecker+Valid, 7272 SdHoareTripleChecker+Invalid, 6362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2058 IncrementalHoareTripleChecker+Valid, 4304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-18 05:13:06,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6024 Valid, 7272 Invalid, 6362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2058 Valid, 4304 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-18 05:13:06,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2021-12-18 05:13:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2156. [2021-12-18 05:13:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1582 states have (on average 1.384323640960809) internal successors, (2190), 1623 states have internal predecessors, (2190), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-18 05:13:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3085 transitions. [2021-12-18 05:13:06,268 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3085 transitions. Word has length 157 [2021-12-18 05:13:06,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:13:06,269 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3085 transitions. [2021-12-18 05:13:06,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 10 states have internal predecessors, (185), 4 states have call successors, (45), 5 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2021-12-18 05:13:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3085 transitions. [2021-12-18 05:13:06,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-18 05:13:06,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:13:06,279 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:13:06,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 05:13:06,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-18 05:13:06,504 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:13:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:13:06,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1286483840, now seen corresponding path program 1 times [2021-12-18 05:13:06,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:13:06,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841069322] [2021-12-18 05:13:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:13:06,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:13:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:13:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:13:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:13:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:13:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:13:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:13:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:13:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:13:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:13:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 05:13:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 05:13:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 05:13:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 05:13:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 05:13:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 05:13:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 05:13:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 05:13:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-18 05:13:06,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:13:06,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841069322] [2021-12-18 05:13:06,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841069322] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:13:06,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204579374] [2021-12-18 05:13:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:13:06,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:13:06,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:13:06,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:13:06,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 05:13:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:07,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 05:13:07,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:13:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-18 05:13:07,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 05:13:07,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204579374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:13:07,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 05:13:07,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2021-12-18 05:13:07,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265386424] [2021-12-18 05:13:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:13:07,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 05:13:07,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:13:07,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 05:13:07,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-12-18 05:13:07,644 INFO L87 Difference]: Start difference. First operand 2156 states and 3085 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 05:13:08,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:13:08,021 INFO L93 Difference]: Finished difference Result 4678 states and 6864 transitions. [2021-12-18 05:13:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 05:13:08,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2021-12-18 05:13:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:13:08,040 INFO L225 Difference]: With dead ends: 4678 [2021-12-18 05:13:08,040 INFO L226 Difference]: Without dead ends: 3086 [2021-12-18 05:13:08,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-18 05:13:08,050 INFO L933 BasicCegarLoop]: 2241 mSDtfsCounter, 865 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 5891 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:13:08,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 5891 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 05:13:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2021-12-18 05:13:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 2158. [2021-12-18 05:13:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 1584 states have (on average 1.3838383838383839) internal successors, (2192), 1625 states have internal predecessors, (2192), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-18 05:13:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 3087 transitions. [2021-12-18 05:13:08,189 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 3087 transitions. Word has length 166 [2021-12-18 05:13:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:13:08,189 INFO L470 AbstractCegarLoop]: Abstraction has 2158 states and 3087 transitions. [2021-12-18 05:13:08,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 05:13:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 3087 transitions. [2021-12-18 05:13:08,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-18 05:13:08,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:13:08,201 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:13:08,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 05:13:08,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-18 05:13:08,416 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:13:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:13:08,416 INFO L85 PathProgramCache]: Analyzing trace with hash 200803734, now seen corresponding path program 1 times [2021-12-18 05:13:08,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:13:08,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851228609] [2021-12-18 05:13:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:13:08,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:13:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:13:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:13:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:13:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:13:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:13:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:13:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:13:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:13:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:13:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 05:13:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 05:13:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 05:13:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 05:13:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 05:13:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 05:13:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 05:13:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 05:13:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 05:13:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 05:13:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-12-18 05:13:08,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:13:08,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851228609] [2021-12-18 05:13:08,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851228609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:13:08,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:13:08,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 05:13:08,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451674721] [2021-12-18 05:13:08,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:13:08,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:13:08,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:13:08,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:13:08,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:13:08,691 INFO L87 Difference]: Start difference. First operand 2158 states and 3087 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 05:13:10,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:13:13,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:13:13,543 INFO L93 Difference]: Finished difference Result 4654 states and 6903 transitions. [2021-12-18 05:13:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 05:13:13,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 175 [2021-12-18 05:13:13,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:13:13,554 INFO L225 Difference]: With dead ends: 4654 [2021-12-18 05:13:13,555 INFO L226 Difference]: Without dead ends: 3060 [2021-12-18 05:13:13,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-18 05:13:13,560 INFO L933 BasicCegarLoop]: 1980 mSDtfsCounter, 1533 mSDsluCounter, 3383 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 5363 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-18 05:13:13,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 5363 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-18 05:13:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2021-12-18 05:13:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 2160. [2021-12-18 05:13:13,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 1586 states have (on average 1.3833543505674653) internal successors, (2194), 1627 states have internal predecessors, (2194), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-18 05:13:13,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 3089 transitions. [2021-12-18 05:13:13,680 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 3089 transitions. Word has length 175 [2021-12-18 05:13:13,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:13:13,681 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 3089 transitions. [2021-12-18 05:13:13,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 05:13:13,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 3089 transitions. [2021-12-18 05:13:13,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-18 05:13:13,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:13:13,690 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:13:13,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 05:13:13,691 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:13:13,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:13:13,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1759072087, now seen corresponding path program 1 times [2021-12-18 05:13:13,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:13:13,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225518490] [2021-12-18 05:13:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:13:13,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:13:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:13,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:13:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:13:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:13:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:13:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:13:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:13:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:13:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:13:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:13:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:13,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 05:13:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 05:13:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 05:13:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 05:13:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 05:13:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 05:13:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 05:13:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 05:13:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 05:13:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 05:13:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 05:13:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-18 05:13:14,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:13:14,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225518490] [2021-12-18 05:13:14,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225518490] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:13:14,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397213282] [2021-12-18 05:13:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:13:14,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:13:14,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:13:14,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:13:14,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 05:13:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:14,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-18 05:13:14,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:13:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-18 05:13:15,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 05:13:15,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397213282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:13:15,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 05:13:15,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 12 [2021-12-18 05:13:15,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680840883] [2021-12-18 05:13:15,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:13:15,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 05:13:15,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:13:15,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 05:13:15,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-18 05:13:15,036 INFO L87 Difference]: Start difference. First operand 2160 states and 3089 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 05:13:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:13:15,304 INFO L93 Difference]: Finished difference Result 3784 states and 5431 transitions. [2021-12-18 05:13:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 05:13:15,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) Word has length 183 [2021-12-18 05:13:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:13:15,314 INFO L225 Difference]: With dead ends: 3784 [2021-12-18 05:13:15,314 INFO L226 Difference]: Without dead ends: 2180 [2021-12-18 05:13:15,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 219 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-12-18 05:13:15,319 INFO L933 BasicCegarLoop]: 1664 mSDtfsCounter, 798 mSDsluCounter, 11475 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 13139 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 05:13:15,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 13139 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 05:13:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2021-12-18 05:13:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2178. [2021-12-18 05:13:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 1598 states have (on average 1.3804755944931164) internal successors, (2206), 1642 states have internal predecessors, (2206), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2021-12-18 05:13:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 3119 transitions. [2021-12-18 05:13:15,425 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 3119 transitions. Word has length 183 [2021-12-18 05:13:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:13:15,426 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 3119 transitions. [2021-12-18 05:13:15,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 05:13:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 3119 transitions. [2021-12-18 05:13:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-18 05:13:15,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:13:15,435 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:13:15,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 05:13:15,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:13:15,651 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:13:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:13:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash -515123284, now seen corresponding path program 1 times [2021-12-18 05:13:15,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:13:15,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297290410] [2021-12-18 05:13:15,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:13:15,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:13:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:13:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:13:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:13:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:13:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:13:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:13:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:13:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:13:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:13:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:13:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 05:13:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 05:13:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 05:13:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 05:13:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 05:13:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 05:13:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 05:13:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 05:13:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 05:13:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 05:13:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-18 05:13:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-18 05:13:15,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:13:15,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297290410] [2021-12-18 05:13:15,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297290410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:13:15,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:13:15,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 05:13:15,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847695375] [2021-12-18 05:13:15,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:13:15,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 05:13:15,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:13:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 05:13:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-18 05:13:15,929 INFO L87 Difference]: Start difference. First operand 2178 states and 3119 transitions. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 05:13:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:13:21,504 INFO L93 Difference]: Finished difference Result 5281 states and 7957 transitions. [2021-12-18 05:13:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 05:13:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 189 [2021-12-18 05:13:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:13:21,515 INFO L225 Difference]: With dead ends: 5281 [2021-12-18 05:13:21,516 INFO L226 Difference]: Without dead ends: 3673 [2021-12-18 05:13:21,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-18 05:13:21,520 INFO L933 BasicCegarLoop]: 2233 mSDtfsCounter, 2353 mSDsluCounter, 8574 mSDsCounter, 0 mSdLazyCounter, 5056 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 10807 SdHoareTripleChecker+Invalid, 5982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 5056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:13:21,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2534 Valid, 10807 Invalid, 5982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [926 Valid, 5056 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-18 05:13:21,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2021-12-18 05:13:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 2181. [2021-12-18 05:13:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 1601 states have (on average 1.3797626483447845) internal successors, (2209), 1644 states have internal predecessors, (2209), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 446 states have call predecessors, (465), 447 states have call successors, (465) [2021-12-18 05:13:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3122 transitions. [2021-12-18 05:13:21,651 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3122 transitions. Word has length 189 [2021-12-18 05:13:21,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:13:21,651 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3122 transitions. [2021-12-18 05:13:21,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 05:13:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3122 transitions. [2021-12-18 05:13:21,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-18 05:13:21,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:13:21,660 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:13:21,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 05:13:21,660 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:13:21,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:13:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1609800849, now seen corresponding path program 1 times [2021-12-18 05:13:21,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:13:21,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576357204] [2021-12-18 05:13:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:13:21,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:13:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:13:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:13:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:22,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:13:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:13:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:13:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:13:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:13:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:22,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:13:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:13:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:13:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 05:13:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 05:13:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 05:13:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 05:13:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:13:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 05:13:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 05:13:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 05:13:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 05:13:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 05:13:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 05:13:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-18 05:13:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-18 05:13:23,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:13:23,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576357204] [2021-12-18 05:13:23,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576357204] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:13:23,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885751942] [2021-12-18 05:13:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:13:23,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:13:23,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:13:23,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:13:23,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 05:13:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:13:24,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 186 conjunts are in the unsatisfiable core [2021-12-18 05:13:24,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:13:24,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 05:13:24,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:13:24,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:13:25,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:25,309 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-18 05:13:25,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 30 [2021-12-18 05:13:25,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:25,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 05:13:25,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:25,706 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-18 05:13:25,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 05:13:25,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 05:13:26,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-18 05:13:26,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 05:13:26,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 05:13:26,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-18 05:13:26,525 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-18 05:13:26,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-12-18 05:13:26,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:13:26,905 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-12-18 05:13:26,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 31 [2021-12-18 05:13:26,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2021-12-18 05:13:26,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:26,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 48 [2021-12-18 05:13:27,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2021-12-18 05:13:27,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2021-12-18 05:13:27,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2021-12-18 05:13:27,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-12-18 05:13:27,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2021-12-18 05:13:27,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-18 05:13:27,621 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-12-18 05:13:27,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2021-12-18 05:13:27,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-12-18 05:13:27,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 57 [2021-12-18 05:13:27,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:27,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-18 05:13:27,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2021-12-18 05:13:27,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-18 05:13:28,089 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-12-18 05:13:28,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-12-18 05:13:28,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 51 [2021-12-18 05:13:28,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-18 05:13:28,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 51 [2021-12-18 05:13:28,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-18 05:13:28,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:28,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-18 05:13:29,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:29,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:29,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 104 [2021-12-18 05:13:29,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:29,993 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 05:13:29,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 85 [2021-12-18 05:13:29,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:13:30,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 29 [2021-12-18 05:13:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 64 proven. 13 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-18 05:13:30,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 05:13:30,055 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_946 (Array Int Int)) (v_ArrVal_945 (Array Int Int)) (v_ArrVal_947 (Array Int Int))) (let ((.cse0 (mod (let ((.cse1 (+ |c_ULTIMATE.start_slip_open_~sl~12#1.offset| 12))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_945) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_946) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_947) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1) 112))) 4294967296))) (or (< 2147483647 .cse0) (<= .cse0 0)))) is different from false [2021-12-18 05:13:30,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885751942] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:13:30,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 05:13:30,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36] total 67 [2021-12-18 05:13:30,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225018312] [2021-12-18 05:13:30,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 05:13:30,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-12-18 05:13:30,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:13:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-12-18 05:13:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=4208, Unknown=1, NotChecked=130, Total=4556 [2021-12-18 05:13:30,073 INFO L87 Difference]: Start difference. First operand 2181 states and 3122 transitions. Second operand has 67 states, 65 states have (on average 3.5384615384615383) internal successors, (230), 53 states have internal predecessors, (230), 21 states have call successors, (44), 13 states have call predecessors, (44), 16 states have return successors, (36), 24 states have call predecessors, (36), 20 states have call successors, (36) [2021-12-18 05:14:04,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:07,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:14,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:16,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:20,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:23,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:28,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:35,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:37,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:40,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:42,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:44,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:46,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:48,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:50,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:52,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:53,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:55,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:57,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:14:59,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:15:02,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:15:03,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:15:05,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:15:06,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:15:08,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:18:33,146 INFO L93 Difference]: Finished difference Result 36083 states and 62357 transitions. [2021-12-18 05:18:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2021-12-18 05:18:33,147 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 3.5384615384615383) internal successors, (230), 53 states have internal predecessors, (230), 21 states have call successors, (44), 13 states have call predecessors, (44), 16 states have return successors, (36), 24 states have call predecessors, (36), 20 states have call successors, (36) Word has length 195 [2021-12-18 05:18:33,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:18:33,383 INFO L225 Difference]: With dead ends: 36083 [2021-12-18 05:18:33,384 INFO L226 Difference]: Without dead ends: 33914 [2021-12-18 05:18:33,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 296 SyntacticMatches, 20 SemanticMatches, 343 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 47564 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=7012, Invalid=110983, Unknown=1, NotChecked=684, Total=118680 [2021-12-18 05:18:33,445 INFO L933 BasicCegarLoop]: 8222 mSDtfsCounter, 31462 mSDsluCounter, 226643 mSDsCounter, 0 mSdLazyCounter, 305233 mSolverCounterSat, 29535 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31927 SdHoareTripleChecker+Valid, 234865 SdHoareTripleChecker+Invalid, 403481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.4s SdHoareTripleChecker+Time, 29535 IncrementalHoareTripleChecker+Valid, 305233 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 68704 IncrementalHoareTripleChecker+Unchecked, 279.8s IncrementalHoareTripleChecker+Time [2021-12-18 05:18:33,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31927 Valid, 234865 Invalid, 403481 Unknown, 0 Unchecked, 1.4s Time], IncrementalHoareTripleChecker [29535 Valid, 305233 Invalid, 9 Unknown, 68704 Unchecked, 279.8s Time] [2021-12-18 05:18:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33914 states. [2021-12-18 05:18:34,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33914 to 10201. [2021-12-18 05:18:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10201 states, 7779 states have (on average 1.4514719115567554) internal successors, (11291), 8013 states have internal predecessors, (11291), 1952 states have call successors, (1952), 452 states have call predecessors, (1952), 469 states have return successors, (2090), 1882 states have call predecessors, (2090), 1951 states have call successors, (2090) [2021-12-18 05:18:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10201 states to 10201 states and 15333 transitions. [2021-12-18 05:18:35,000 INFO L78 Accepts]: Start accepts. Automaton has 10201 states and 15333 transitions. Word has length 195 [2021-12-18 05:18:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:18:35,001 INFO L470 AbstractCegarLoop]: Abstraction has 10201 states and 15333 transitions. [2021-12-18 05:18:35,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 3.5384615384615383) internal successors, (230), 53 states have internal predecessors, (230), 21 states have call successors, (44), 13 states have call predecessors, (44), 16 states have return successors, (36), 24 states have call predecessors, (36), 20 states have call successors, (36) [2021-12-18 05:18:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 10201 states and 15333 transitions. [2021-12-18 05:18:35,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-18 05:18:35,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:18:35,044 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:18:35,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 05:18:35,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-18 05:18:35,268 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:18:35,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:18:35,268 INFO L85 PathProgramCache]: Analyzing trace with hash 615473906, now seen corresponding path program 1 times [2021-12-18 05:18:35,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:18:35,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224362113] [2021-12-18 05:18:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:18:35,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:18:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:18:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:18:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:18:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:18:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:18:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:18:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:18:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 05:18:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 05:18:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 05:18:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 05:18:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 05:18:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 05:18:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 05:18:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 05:18:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 05:18:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 05:18:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-18 05:18:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 05:18:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-12-18 05:18:35,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:18:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224362113] [2021-12-18 05:18:35,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224362113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:18:35,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:18:35,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 05:18:35,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881987680] [2021-12-18 05:18:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:18:35,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:18:35,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:18:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:18:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:18:35,488 INFO L87 Difference]: Start difference. First operand 10201 states and 15333 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 05:18:38,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:18:40,511 INFO L93 Difference]: Finished difference Result 21473 states and 32590 transitions. [2021-12-18 05:18:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 05:18:40,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 201 [2021-12-18 05:18:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:18:40,562 INFO L225 Difference]: With dead ends: 21473 [2021-12-18 05:18:40,562 INFO L226 Difference]: Without dead ends: 11300 [2021-12-18 05:18:40,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-18 05:18:40,600 INFO L933 BasicCegarLoop]: 1476 mSDtfsCounter, 1175 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 3810 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-18 05:18:40,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 3810 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-18 05:18:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11300 states. [2021-12-18 05:18:41,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11300 to 10132. [2021-12-18 05:18:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10132 states, 7725 states have (on average 1.4500970873786407) internal successors, (11202), 7959 states have internal predecessors, (11202), 1937 states have call successors, (1937), 452 states have call predecessors, (1937), 469 states have return successors, (2070), 1866 states have call predecessors, (2070), 1936 states have call successors, (2070) [2021-12-18 05:18:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10132 states to 10132 states and 15209 transitions. [2021-12-18 05:18:41,508 INFO L78 Accepts]: Start accepts. Automaton has 10132 states and 15209 transitions. Word has length 201 [2021-12-18 05:18:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:18:41,509 INFO L470 AbstractCegarLoop]: Abstraction has 10132 states and 15209 transitions. [2021-12-18 05:18:41,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 05:18:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 10132 states and 15209 transitions. [2021-12-18 05:18:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-12-18 05:18:41,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:18:41,540 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:18:41,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 05:18:41,541 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:18:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:18:41,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1871245556, now seen corresponding path program 1 times [2021-12-18 05:18:41,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:18:41,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567920907] [2021-12-18 05:18:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:18:41,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:18:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:18:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:18:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:18:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:18:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:18:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:18:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:18:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 05:18:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 05:18:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 05:18:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 05:18:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 05:18:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 05:18:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 05:18:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 05:18:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 05:18:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 05:18:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-18 05:18:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 05:18:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-12-18 05:18:41,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:18:41,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567920907] [2021-12-18 05:18:41,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567920907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:18:41,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:18:41,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 05:18:41,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53422666] [2021-12-18 05:18:41,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:18:41,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 05:18:41,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:18:41,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 05:18:41,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-18 05:18:41,847 INFO L87 Difference]: Start difference. First operand 10132 states and 15209 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 05:18:47,618 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 [] [2021-12-18 05:18:49,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:52,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:54,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:56,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:59,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:18:59,396 INFO L93 Difference]: Finished difference Result 24280 states and 36536 transitions. [2021-12-18 05:18:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 05:18:59,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 199 [2021-12-18 05:18:59,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:18:59,471 INFO L225 Difference]: With dead ends: 24280 [2021-12-18 05:18:59,471 INFO L226 Difference]: Without dead ends: 14640 [2021-12-18 05:18:59,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-12-18 05:18:59,508 INFO L933 BasicCegarLoop]: 2705 mSDtfsCounter, 3021 mSDsluCounter, 6790 mSDsCounter, 0 mSdLazyCounter, 5946 mSolverCounterSat, 1730 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3198 SdHoareTripleChecker+Valid, 9495 SdHoareTripleChecker+Invalid, 7681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1730 IncrementalHoareTripleChecker+Valid, 5946 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-12-18 05:18:59,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3198 Valid, 9495 Invalid, 7681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1730 Valid, 5946 Invalid, 5 Unknown, 0 Unchecked, 16.4s Time] [2021-12-18 05:18:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14640 states. [2021-12-18 05:19:00,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14640 to 12947. [2021-12-18 05:19:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12947 states, 9794 states have (on average 1.4379211762303452) internal successors, (14083), 10099 states have internal predecessors, (14083), 2510 states have call successors, (2510), 614 states have call predecessors, (2510), 642 states have return successors, (2680), 2427 states have call predecessors, (2680), 2509 states have call successors, (2680) [2021-12-18 05:19:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12947 states to 12947 states and 19273 transitions. [2021-12-18 05:19:00,571 INFO L78 Accepts]: Start accepts. Automaton has 12947 states and 19273 transitions. Word has length 199 [2021-12-18 05:19:00,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:19:00,571 INFO L470 AbstractCegarLoop]: Abstraction has 12947 states and 19273 transitions. [2021-12-18 05:19:00,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 05:19:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 12947 states and 19273 transitions. [2021-12-18 05:19:00,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-12-18 05:19:00,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:19:00,601 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:19:00,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 05:19:00,602 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:19:00,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:19:00,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1911936896, now seen corresponding path program 1 times [2021-12-18 05:19:00,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:19:00,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401263131] [2021-12-18 05:19:00,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:19:00,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:19:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:19:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:19:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:19:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:19:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:19:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:19:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:19:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:19:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:19:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 05:19:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 05:19:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 05:19:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 05:19:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:19:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 05:19:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 05:19:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 05:19:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 05:19:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-18 05:19:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 05:19:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-18 05:19:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-18 05:19:01,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:19:01,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401263131] [2021-12-18 05:19:01,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401263131] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:19:01,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225369265] [2021-12-18 05:19:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:19:01,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:19:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:19:01,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:19:01,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 05:19:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:03,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-18 05:19:03,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:19:03,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2021-12-18 05:19:03,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-18 05:19:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-18 05:19:03,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 05:19:03,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225369265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:19:03,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 05:19:03,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 19 [2021-12-18 05:19:03,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438796033] [2021-12-18 05:19:03,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:19:03,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 05:19:03,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:19:03,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 05:19:03,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-18 05:19:03,729 INFO L87 Difference]: Start difference. First operand 12947 states and 19273 transitions. Second operand has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 13 states have internal predecessors, (130), 5 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-18 05:19:11,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:13,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:15,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:17,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:19,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:21,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:23,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:25,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:35,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:19:35,076 INFO L93 Difference]: Finished difference Result 59076 states and 94229 transitions. [2021-12-18 05:19:35,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-18 05:19:35,077 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 13 states have internal predecessors, (130), 5 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) Word has length 198 [2021-12-18 05:19:35,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:19:35,313 INFO L225 Difference]: With dead ends: 59076 [2021-12-18 05:19:35,314 INFO L226 Difference]: Without dead ends: 46701 [2021-12-18 05:19:35,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 247 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=558, Invalid=3864, Unknown=0, NotChecked=0, Total=4422 [2021-12-18 05:19:35,378 INFO L933 BasicCegarLoop]: 2878 mSDtfsCounter, 7559 mSDsluCounter, 28973 mSDsCounter, 0 mSdLazyCounter, 11720 mSolverCounterSat, 2603 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7572 SdHoareTripleChecker+Valid, 31851 SdHoareTripleChecker+Invalid, 14329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2603 IncrementalHoareTripleChecker+Valid, 11720 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2021-12-18 05:19:35,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7572 Valid, 31851 Invalid, 14329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2603 Valid, 11720 Invalid, 6 Unknown, 0 Unchecked, 26.7s Time] [2021-12-18 05:19:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46701 states. [2021-12-18 05:19:37,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46701 to 20863. [2021-12-18 05:19:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20863 states, 15696 states have (on average 1.4406218144750256) internal successors, (22612), 16236 states have internal predecessors, (22612), 4012 states have call successors, (4012), 1118 states have call predecessors, (4012), 1154 states have return successors, (4640), 3756 states have call predecessors, (4640), 4011 states have call successors, (4640) [2021-12-18 05:19:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20863 states to 20863 states and 31264 transitions. [2021-12-18 05:19:37,588 INFO L78 Accepts]: Start accepts. Automaton has 20863 states and 31264 transitions. Word has length 198 [2021-12-18 05:19:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:19:37,589 INFO L470 AbstractCegarLoop]: Abstraction has 20863 states and 31264 transitions. [2021-12-18 05:19:37,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 13 states have internal predecessors, (130), 5 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-18 05:19:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 20863 states and 31264 transitions. [2021-12-18 05:19:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-18 05:19:37,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:19:37,640 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:19:37,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-18 05:19:37,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-18 05:19:37,852 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:19:37,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:19:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1112501275, now seen corresponding path program 1 times [2021-12-18 05:19:37,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:19:37,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911916858] [2021-12-18 05:19:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:19:37,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:19:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:19:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:19:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:19:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:19:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:19:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:19:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:19:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:19:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:19:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 05:19:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 05:19:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 05:19:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 05:19:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:19:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:19:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 05:19:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 05:19:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:40,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 05:19:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-18 05:19:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:40,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 05:19:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 05:19:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:40,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 05:19:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-18 05:19:40,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:19:40,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911916858] [2021-12-18 05:19:40,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911916858] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:19:40,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197942956] [2021-12-18 05:19:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:19:40,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:19:40,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:19:40,049 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:19:40,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 05:19:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:40,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 196 conjunts are in the unsatisfiable core [2021-12-18 05:19:40,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:19:40,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 05:19:41,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:19:41,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 05:19:41,548 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 05:19:41,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-18 05:19:41,672 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 05:19:41,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 05:19:42,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:42,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:42,112 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-12-18 05:19:42,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 38 [2021-12-18 05:19:42,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:42,401 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-18 05:19:42,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 10 [2021-12-18 05:19:42,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:19:42,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:42,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:42,612 INFO L354 Elim1Store]: treesize reduction 24, result has 27.3 percent of original size [2021-12-18 05:19:42,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 21 [2021-12-18 05:19:42,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 05:19:42,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 05:19:42,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:42,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:42,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:42,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2021-12-18 05:19:42,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 05:19:43,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 05:19:43,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:19:43,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:19:43,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-12-18 05:19:43,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-12-18 05:19:43,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-18 05:19:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-12-18 05:19:43,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2021-12-18 05:19:43,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2021-12-18 05:19:43,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 05:19:43,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 05:19:43,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 05:19:43,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-12-18 05:19:43,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 05:19:43,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-12-18 05:19:43,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-12-18 05:19:43,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:43,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-18 05:19:43,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 05:19:44,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:44,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 05:19:44,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:44,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:44,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:44,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-18 05:19:44,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:44,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:19:44,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:44,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:19:44,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:44,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:44,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:44,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-18 05:19:44,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:44,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 05:19:45,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:45,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 435 treesize of output 255 [2021-12-18 05:19:45,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:45,638 INFO L354 Elim1Store]: treesize reduction 43, result has 27.1 percent of original size [2021-12-18 05:19:45,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 377 treesize of output 252 [2021-12-18 05:19:45,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:19:45,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 174 [2021-12-18 05:19:45,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 139 [2021-12-18 05:19:45,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 122 [2021-12-18 05:19:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 68 proven. 17 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-18 05:19:45,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 05:19:45,719 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1658 (Array Int Int)) (v_ArrVal_1657 (Array Int Int)) (v_ArrVal_1656 (Array Int Int))) (let ((.cse0 (mod (let ((.cse1 (+ |c_ULTIMATE.start_slip_open_~sl~12#1.offset| 12))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1657) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1656) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1658) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1) 112))) 4294967296))) (or (<= .cse0 0) (< 2147483647 .cse0)))) is different from false [2021-12-18 05:19:45,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197942956] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:19:45,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 05:19:45,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 71 [2021-12-18 05:19:45,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601228783] [2021-12-18 05:19:45,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 05:19:45,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-18 05:19:45,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:19:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-18 05:19:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=4740, Unknown=1, NotChecked=138, Total=5112 [2021-12-18 05:19:45,735 INFO L87 Difference]: Start difference. First operand 20863 states and 31264 transitions. Second operand has 71 states, 70 states have (on average 3.4) internal successors, (238), 59 states have internal predecessors, (238), 23 states have call successors, (47), 13 states have call predecessors, (47), 18 states have return successors, (39), 25 states have call predecessors, (39), 22 states have call successors, (39) [2021-12-18 05:20:16,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:19,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:21,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:24,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:36,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:38,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:40,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:41,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:44,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:46,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:49,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:51,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:52,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:57,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:02,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:10,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:23:50,485 INFO L93 Difference]: Finished difference Result 119277 states and 197038 transitions. [2021-12-18 05:23:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2021-12-18 05:23:50,485 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 3.4) internal successors, (238), 59 states have internal predecessors, (238), 23 states have call successors, (47), 13 states have call predecessors, (47), 18 states have return successors, (39), 25 states have call predecessors, (39), 22 states have call successors, (39) Word has length 202 [2021-12-18 05:23:50,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:23:51,422 INFO L225 Difference]: With dead ends: 119277 [2021-12-18 05:23:51,422 INFO L226 Difference]: Without dead ends: 98962 [2021-12-18 05:23:51,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 266 SyntacticMatches, 73 SemanticMatches, 275 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32861 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=3828, Invalid=72075, Unknown=1, NotChecked=548, Total=76452 [2021-12-18 05:23:51,534 INFO L933 BasicCegarLoop]: 9742 mSDtfsCounter, 20947 mSDsluCounter, 293276 mSDsCounter, 0 mSdLazyCounter, 283213 mSolverCounterSat, 25295 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 195.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21404 SdHoareTripleChecker+Valid, 303018 SdHoareTripleChecker+Invalid, 345918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.2s SdHoareTripleChecker+Time, 25295 IncrementalHoareTripleChecker+Valid, 283213 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 37403 IncrementalHoareTripleChecker+Unchecked, 217.0s IncrementalHoareTripleChecker+Time [2021-12-18 05:23:51,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21404 Valid, 303018 Invalid, 345918 Unknown, 0 Unchecked, 1.2s Time], IncrementalHoareTripleChecker [25295 Valid, 283213 Invalid, 7 Unknown, 37403 Unchecked, 217.0s Time] [2021-12-18 05:23:51,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98962 states. [2021-12-18 05:23:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98962 to 43209. [2021-12-18 05:23:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43209 states, 32531 states have (on average 1.448372321785374) internal successors, (47117), 33738 states have internal predecessors, (47117), 8393 states have call successors, (8393), 2034 states have call predecessors, (8393), 2284 states have return successors, (10579), 7928 states have call predecessors, (10579), 8392 states have call successors, (10579) [2021-12-18 05:23:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43209 states to 43209 states and 66089 transitions. [2021-12-18 05:23:55,854 INFO L78 Accepts]: Start accepts. Automaton has 43209 states and 66089 transitions. Word has length 202 [2021-12-18 05:23:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:23:55,855 INFO L470 AbstractCegarLoop]: Abstraction has 43209 states and 66089 transitions. [2021-12-18 05:23:55,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 3.4) internal successors, (238), 59 states have internal predecessors, (238), 23 states have call successors, (47), 13 states have call predecessors, (47), 18 states have return successors, (39), 25 states have call predecessors, (39), 22 states have call successors, (39) [2021-12-18 05:23:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 43209 states and 66089 transitions. [2021-12-18 05:23:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-18 05:23:55,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:23:55,965 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:23:55,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 05:23:56,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:23:56,176 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:23:56,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:23:56,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2027249608, now seen corresponding path program 1 times [2021-12-18 05:23:56,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:23:56,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406823917] [2021-12-18 05:23:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:23:56,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:23:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:23:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 05:23:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 05:23:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 05:23:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 05:23:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 05:23:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 05:23:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 05:23:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:23:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:23:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 05:23:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 05:23:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 05:23:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 05:23:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:23:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:23:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 05:23:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 05:23:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 05:23:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-18 05:23:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 05:23:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 05:23:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-18 05:23:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 05:23:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-18 05:23:58,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:23:58,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406823917] [2021-12-18 05:23:58,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406823917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:23:58,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732232092] [2021-12-18 05:23:58,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:23:58,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:23:58,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:23:58,918 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:23:58,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 05:23:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:23:59,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 203 conjunts are in the unsatisfiable core [2021-12-18 05:23:59,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:23:59,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 05:24:00,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:24:00,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 05:24:00,335 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 05:24:00,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-18 05:24:00,434 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 05:24:00,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 05:24:00,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:00,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:00,850 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-12-18 05:24:00,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 38 [2021-12-18 05:24:01,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:01,077 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-18 05:24:01,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 10 [2021-12-18 05:24:01,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:24:01,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:01,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:01,228 INFO L354 Elim1Store]: treesize reduction 24, result has 27.3 percent of original size [2021-12-18 05:24:01,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 21 [2021-12-18 05:24:01,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 05:24:01,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 05:24:01,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 05:24:01,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:01,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:01,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:01,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2021-12-18 05:24:01,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:01,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:24:01,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:01,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:24:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:01,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 05:24:02,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-12-18 05:24:02,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-18 05:24:02,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-12-18 05:24:02,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-12-18 05:24:02,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2021-12-18 05:24:02,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2021-12-18 05:24:02,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 05:24:02,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 05:24:02,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 05:24:02,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-12-18 05:24:02,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 05:24:02,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-12-18 05:24:02,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 05:24:02,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-18 05:24:02,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 05:24:02,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:24:02,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 05:24:02,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:02,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:24:03,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:03,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:24:03,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:03,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 05:24:03,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:03,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:24:03,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:03,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:24:03,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:03,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 05:24:03,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:03,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 05:24:04,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:04,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 101 [2021-12-18 05:24:04,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:04,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 65 [2021-12-18 05:24:04,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:24:04,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2021-12-18 05:24:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 68 proven. 17 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-18 05:24:04,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 05:24:04,273 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1960 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int))) (let ((.cse0 (mod (let ((.cse1 (+ |c_ULTIMATE.start_slip_open_~sl~12#1.offset| 12))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1959) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1958) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1960) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1) 112))) 4294967296))) (or (< 2147483647 .cse0) (<= .cse0 0)))) is different from false [2021-12-18 05:24:04,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732232092] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:24:04,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 05:24:04,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 76 [2021-12-18 05:24:04,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636813445] [2021-12-18 05:24:04,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 05:24:04,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-12-18 05:24:04,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:24:04,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-12-18 05:24:04,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=5448, Unknown=1, NotChecked=148, Total=5852 [2021-12-18 05:24:04,285 INFO L87 Difference]: Start difference. First operand 43209 states and 66089 transitions. Second operand has 76 states, 74 states have (on average 3.324324324324324) internal successors, (246), 62 states have internal predecessors, (246), 25 states have call successors, (49), 13 states have call predecessors, (49), 18 states have return successors, (41), 28 states have call predecessors, (41), 24 states have call successors, (41) Killed by 15