./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.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 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 06:47:06,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 06:47:06,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 06:47:06,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 06:47:06,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 06:47:06,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 06:47:06,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 06:47:06,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 06:47:06,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 06:47:06,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 06:47:06,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 06:47:06,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 06:47:06,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 06:47:06,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 06:47:06,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 06:47:06,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 06:47:06,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 06:47:06,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 06:47:06,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 06:47:06,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 06:47:06,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 06:47:06,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 06:47:06,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 06:47:06,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 06:47:06,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 06:47:06,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 06:47:06,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 06:47:06,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 06:47:06,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 06:47:06,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 06:47:06,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 06:47:06,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 06:47:06,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 06:47:06,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 06:47:06,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 06:47:06,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 06:47:06,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 06:47:06,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 06:47:06,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 06:47:06,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 06:47:06,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 06:47:06,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 06:47:06,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 06:47:06,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 06:47:06,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 06:47:06,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 06:47:06,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 06:47:06,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 06:47:06,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 06:47:06,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 06:47:06,475 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 06:47:06,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 06:47:06,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 06:47:06,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 06:47:06,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 06:47:06,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 06:47:06,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 06:47:06,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 06:47:06,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 06:47:06,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 06:47:06,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 06:47:06,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 06:47:06,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 06:47:06,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 06:47:06,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 06:47:06,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 06:47:06,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 06:47:06,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 06:47:06,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 06:47:06,479 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 06:47:06,480 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 06:47:06,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 06:47:06,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 06:47:06,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2021-12-18 06:47:06,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 06:47:06,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 06:47:06,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 06:47:06,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 06:47:06,689 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 06:47:06,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-12-18 06:47:06,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38dbcf236/be3aaadcce18404e86485315358c150e/FLAGf735dbf1a [2021-12-18 06:47:07,373 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 06:47:07,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-12-18 06:47:07,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38dbcf236/be3aaadcce18404e86485315358c150e/FLAGf735dbf1a [2021-12-18 06:47:07,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38dbcf236/be3aaadcce18404e86485315358c150e [2021-12-18 06:47:07,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 06:47:07,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 06:47:07,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 06:47:07,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 06:47:07,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 06:47:07,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:47:07" (1/1) ... [2021-12-18 06:47:07,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9b9c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:07, skipping insertion in model container [2021-12-18 06:47:07,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:47:07" (1/1) ... [2021-12-18 06:47:07,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 06:47:07,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 06:47:08,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-12-18 06:47:08,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 06:47:08,947 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 06:47:09,224 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-12-18 06:47:09,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 06:47:09,282 INFO L208 MainTranslator]: Completed translation [2021-12-18 06:47:09,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09 WrapperNode [2021-12-18 06:47:09,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 06:47:09,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 06:47:09,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 06:47:09,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 06:47:09,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (1/1) ... [2021-12-18 06:47:09,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (1/1) ... [2021-12-18 06:47:09,474 INFO L137 Inliner]: procedures = 221, calls = 1591, calls flagged for inlining = 84, calls inlined = 76, statements flattened = 4430 [2021-12-18 06:47:09,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 06:47:09,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 06:47:09,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 06:47:09,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 06:47:09,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (1/1) ... [2021-12-18 06:47:09,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (1/1) ... [2021-12-18 06:47:09,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (1/1) ... [2021-12-18 06:47:09,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (1/1) ... [2021-12-18 06:47:09,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (1/1) ... [2021-12-18 06:47:09,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (1/1) ... [2021-12-18 06:47:09,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (1/1) ... [2021-12-18 06:47:09,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 06:47:09,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 06:47:09,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 06:47:09,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 06:47:09,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (1/1) ... [2021-12-18 06:47:09,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 06:47:09,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 06:47:09,676 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 06:47:09,681 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 06:47:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_get_mode [2021-12-18 06:47:09,706 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_get_mode [2021-12-18 06:47:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2021-12-18 06:47:09,706 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2021-12-18 06:47:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 06:47:09,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 06:47:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 06:47:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 06:47:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-12-18 06:47:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-12-18 06:47:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_format [2021-12-18 06:47:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_format [2021-12-18 06:47:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 06:47:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 06:47:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure raid_io_hints [2021-12-18 06:47:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_io_hints [2021-12-18 06:47:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure raid_message [2021-12-18 06:47:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_message [2021-12-18 06:47:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 06:47:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 06:47:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-18 06:47:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-18 06:47:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_copies [2021-12-18 06:47:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_copies [2021-12-18 06:47:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 06:47:09,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 06:47:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 06:47:09,739 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 06:47:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure context_free [2021-12-18 06:47:09,739 INFO L138 BoogieDeclarations]: Found implementation of procedure context_free [2021-12-18 06:47:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 06:47:09,739 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 06:47:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-18 06:47:09,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-18 06:47:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure super_validate [2021-12-18 06:47:09,740 INFO L138 BoogieDeclarations]: Found implementation of procedure super_validate [2021-12-18 06:47:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure do_table_event [2021-12-18 06:47:09,740 INFO L138 BoogieDeclarations]: Found implementation of procedure do_table_event [2021-12-18 06:47:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 06:47:09,741 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 06:47:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 06:47:09,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 06:47:09,741 INFO L130 BoogieDeclarations]: Found specification of procedure sync_page_io [2021-12-18 06:47:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_page_io [2021-12-18 06:47:09,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-18 06:47:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-18 06:47:09,742 INFO L130 BoogieDeclarations]: Found specification of procedure to_sector [2021-12-18 06:47:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sector [2021-12-18 06:47:09,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 06:47:09,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 06:47:09,742 INFO L130 BoogieDeclarations]: Found specification of procedure raid_iterate_devices [2021-12-18 06:47:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_iterate_devices [2021-12-18 06:47:09,742 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_device [2021-12-18 06:47:09,743 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_device [2021-12-18 06:47:09,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2021-12-18 06:47:09,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2021-12-18 06:47:09,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 06:47:09,744 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_suspend [2021-12-18 06:47:09,744 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_suspend [2021-12-18 06:47:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 06:47:09,745 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 06:47:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure super_sync [2021-12-18 06:47:09,745 INFO L138 BoogieDeclarations]: Found implementation of procedure super_sync [2021-12-18 06:47:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 06:47:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2021-12-18 06:47:09,745 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2021-12-18 06:47:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure md_wakeup_thread [2021-12-18 06:47:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure md_wakeup_thread [2021-12-18 06:47:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 06:47:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 06:47:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 06:47:09,747 INFO L130 BoogieDeclarations]: Found specification of procedure raid_merge [2021-12-18 06:47:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_merge [2021-12-18 06:47:09,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 06:47:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 06:47:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure raid_map [2021-12-18 06:47:09,748 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_map [2021-12-18 06:47:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 06:47:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 06:47:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-12-18 06:47:09,748 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2021-12-18 06:47:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure md_stop [2021-12-18 06:47:09,748 INFO L138 BoogieDeclarations]: Found implementation of procedure md_stop [2021-12-18 06:47:09,748 INFO L130 BoogieDeclarations]: Found specification of procedure raid_status [2021-12-18 06:47:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_status [2021-12-18 06:47:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-18 06:47:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-18 06:47:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 06:47:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 06:47:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 06:47:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 06:47:09,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 06:47:09,750 INFO L130 BoogieDeclarations]: Found specification of procedure raid_dtr [2021-12-18 06:47:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_dtr [2021-12-18 06:47:09,750 INFO L130 BoogieDeclarations]: Found specification of procedure dm_get_device [2021-12-18 06:47:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_get_device [2021-12-18 06:47:09,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 06:47:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 06:47:09,751 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 06:47:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 06:47:10,198 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 06:47:10,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 06:47:10,500 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 06:47:12,195 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 06:47:12,217 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 06:47:12,217 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 06:47:12,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:47:12 BoogieIcfgContainer [2021-12-18 06:47:12,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 06:47:12,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 06:47:12,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 06:47:12,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 06:47:12,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 06:47:07" (1/3) ... [2021-12-18 06:47:12,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b64aabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:47:12, skipping insertion in model container [2021-12-18 06:47:12,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:47:09" (2/3) ... [2021-12-18 06:47:12,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b64aabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:47:12, skipping insertion in model container [2021-12-18 06:47:12,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:47:12" (3/3) ... [2021-12-18 06:47:12,228 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-12-18 06:47:12,232 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 06:47:12,233 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 06:47:12,271 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 06:47:12,276 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 06:47:12,277 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 06:47:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 1134 states, 873 states have (on average 1.4421534936998854) internal successors, (1259), 894 states have internal predecessors, (1259), 216 states have call successors, (216), 44 states have call predecessors, (216), 43 states have return successors, (212), 208 states have call predecessors, (212), 212 states have call successors, (212) [2021-12-18 06:47:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-18 06:47:12,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:47:12,334 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:47:12,335 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:47:12,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:47:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1014089832, now seen corresponding path program 1 times [2021-12-18 06:47:12,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:47:12,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013481178] [2021-12-18 06:47:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:47:12,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:47:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:47:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:47:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:47:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:47:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:47:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:47:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:47:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:47:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:47:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:47:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:47:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:12,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:47:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:47:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:47:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:47:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-18 06:47:13,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:47:13,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013481178] [2021-12-18 06:47:13,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013481178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:47:13,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:47:13,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 06:47:13,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292331822] [2021-12-18 06:47:13,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:47:13,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 06:47:13,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:47:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 06:47:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 06:47:13,139 INFO L87 Difference]: Start difference. First operand has 1134 states, 873 states have (on average 1.4421534936998854) internal successors, (1259), 894 states have internal predecessors, (1259), 216 states have call successors, (216), 44 states have call predecessors, (216), 43 states have return successors, (212), 208 states have call predecessors, (212), 212 states have call successors, (212) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 06:47:15,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:47:17,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:47:18,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:47:18,202 INFO L93 Difference]: Finished difference Result 2290 states and 3434 transitions. [2021-12-18 06:47:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 06:47:18,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 221 [2021-12-18 06:47:18,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:47:18,223 INFO L225 Difference]: With dead ends: 2290 [2021-12-18 06:47:18,224 INFO L226 Difference]: Without dead ends: 1149 [2021-12-18 06:47:18,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:47:18,238 INFO L933 BasicCegarLoop]: 1543 mSDtfsCounter, 862 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-18 06:47:18,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 2804 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-18 06:47:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2021-12-18 06:47:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1122. [2021-12-18 06:47:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 867 states have (on average 1.4359861591695502) internal successors, (1245), 882 states have internal predecessors, (1245), 212 states have call successors, (212), 43 states have call predecessors, (212), 42 states have return successors, (207), 203 states have call predecessors, (207), 207 states have call successors, (207) [2021-12-18 06:47:18,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1664 transitions. [2021-12-18 06:47:18,398 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1664 transitions. Word has length 221 [2021-12-18 06:47:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:47:18,399 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1664 transitions. [2021-12-18 06:47:18,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 06:47:18,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1664 transitions. [2021-12-18 06:47:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-18 06:47:18,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:47:18,402 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:47:18,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 06:47:18,403 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:47:18,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:47:18,403 INFO L85 PathProgramCache]: Analyzing trace with hash -814978680, now seen corresponding path program 1 times [2021-12-18 06:47:18,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:47:18,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228126874] [2021-12-18 06:47:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:47:18,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:47:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:47:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:47:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:47:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:47:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:47:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:47:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:47:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:47:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:47:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:47:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:47:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:47:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:47:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:47:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:47:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-18 06:47:18,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:47:18,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228126874] [2021-12-18 06:47:18,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228126874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:47:18,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:47:18,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:47:18,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636599919] [2021-12-18 06:47:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:47:18,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:47:18,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:47:18,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:47:18,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:47:18,780 INFO L87 Difference]: Start difference. First operand 1122 states and 1664 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:47:22,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:47:22,671 INFO L93 Difference]: Finished difference Result 3312 states and 4942 transitions. [2021-12-18 06:47:22,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 06:47:22,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 221 [2021-12-18 06:47:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:47:22,689 INFO L225 Difference]: With dead ends: 3312 [2021-12-18 06:47:22,689 INFO L226 Difference]: Without dead ends: 2229 [2021-12-18 06:47:22,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 06:47:22,695 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 3915 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 1663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4043 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1663 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-18 06:47:22,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4043 Valid, 3489 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1663 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-18 06:47:22,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2021-12-18 06:47:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2175. [2021-12-18 06:47:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 1693 states have (on average 1.442409923213231) internal successors, (2442), 1719 states have internal predecessors, (2442), 400 states have call successors, (400), 82 states have call predecessors, (400), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-12-18 06:47:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3237 transitions. [2021-12-18 06:47:22,797 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3237 transitions. Word has length 221 [2021-12-18 06:47:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:47:22,800 INFO L470 AbstractCegarLoop]: Abstraction has 2175 states and 3237 transitions. [2021-12-18 06:47:22,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:47:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3237 transitions. [2021-12-18 06:47:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-18 06:47:22,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:47:22,805 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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 06:47:22,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 06:47:22,805 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:47:22,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:47:22,806 INFO L85 PathProgramCache]: Analyzing trace with hash 993586167, now seen corresponding path program 1 times [2021-12-18 06:47:22,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:47:22,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364411680] [2021-12-18 06:47:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:47:22,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:47:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:47:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:47:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:47:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:47:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:47:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:47:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:47:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:47:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:47:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:47:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:47:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:47:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:47:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:47:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:47:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-18 06:47:23,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:47:23,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364411680] [2021-12-18 06:47:23,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364411680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:47:23,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:47:23,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:47:23,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692298914] [2021-12-18 06:47:23,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:47:23,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:47:23,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:47:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:47:23,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:47:23,257 INFO L87 Difference]: Start difference. First operand 2175 states and 3237 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 06:47:25,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:47:25,190 INFO L93 Difference]: Finished difference Result 2228 states and 3328 transitions. [2021-12-18 06:47:25,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 06:47:25,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 224 [2021-12-18 06:47:25,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:47:25,201 INFO L225 Difference]: With dead ends: 2228 [2021-12-18 06:47:25,201 INFO L226 Difference]: Without dead ends: 2225 [2021-12-18 06:47:25,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:47:25,204 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 2690 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-18 06:47:25,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 2161 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [919 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-18 06:47:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2021-12-18 06:47:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2174. [2021-12-18 06:47:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 1693 states have (on average 1.4418192557590077) internal successors, (2441), 1718 states have internal predecessors, (2441), 399 states have call successors, (399), 82 states have call predecessors, (399), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-12-18 06:47:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3235 transitions. [2021-12-18 06:47:25,320 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3235 transitions. Word has length 224 [2021-12-18 06:47:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:47:25,320 INFO L470 AbstractCegarLoop]: Abstraction has 2174 states and 3235 transitions. [2021-12-18 06:47:25,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 06:47:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3235 transitions. [2021-12-18 06:47:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-18 06:47:25,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:47:25,324 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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 06:47:25,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 06:47:25,325 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:47:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:47:25,325 INFO L85 PathProgramCache]: Analyzing trace with hash 736097576, now seen corresponding path program 1 times [2021-12-18 06:47:25,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:47:25,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928234499] [2021-12-18 06:47:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:47:25,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:47:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:47:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:47:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:47:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:47:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:47:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:47:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:47:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:47:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:47:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:47:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:47:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:47:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:47:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:47:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:47:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-18 06:47:25,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:47:25,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928234499] [2021-12-18 06:47:25,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928234499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:47:25,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:47:25,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:47:25,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403118294] [2021-12-18 06:47:25,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:47:25,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:47:25,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:47:25,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:47:25,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:47:25,705 INFO L87 Difference]: Start difference. First operand 2174 states and 3235 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 06:47:31,234 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 06:47:33,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:47:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:47:33,425 INFO L93 Difference]: Finished difference Result 2227 states and 3326 transitions. [2021-12-18 06:47:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 06:47:33,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 225 [2021-12-18 06:47:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:47:33,435 INFO L225 Difference]: With dead ends: 2227 [2021-12-18 06:47:33,435 INFO L226 Difference]: Without dead ends: 2224 [2021-12-18 06:47:33,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:47:33,436 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 2254 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 646 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2381 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-18 06:47:33,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2381 Valid, 3312 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 1332 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-12-18 06:47:33,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-12-18 06:47:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2173. [2021-12-18 06:47:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 1693 states have (on average 1.4412285883047844) internal successors, (2440), 1717 states have internal predecessors, (2440), 398 states have call successors, (398), 82 states have call predecessors, (398), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-12-18 06:47:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3233 transitions. [2021-12-18 06:47:33,495 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3233 transitions. Word has length 225 [2021-12-18 06:47:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:47:33,496 INFO L470 AbstractCegarLoop]: Abstraction has 2173 states and 3233 transitions. [2021-12-18 06:47:33,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 06:47:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3233 transitions. [2021-12-18 06:47:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-18 06:47:33,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:47:33,498 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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 06:47:33,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 06:47:33,499 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:47:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:47:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1343890714, now seen corresponding path program 1 times [2021-12-18 06:47:33,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:47:33,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538363072] [2021-12-18 06:47:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:47:33,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:47:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:47:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:47:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:47:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:47:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:47:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:47:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:47:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:47:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:47:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:47:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:47:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:47:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:47:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:47:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:47:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-18 06:47:33,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:47:33,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538363072] [2021-12-18 06:47:33,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538363072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:47:33,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:47:33,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:47:33,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471878654] [2021-12-18 06:47:33,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:47:33,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:47:33,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:47:33,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:47:33,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:47:33,811 INFO L87 Difference]: Start difference. First operand 2173 states and 3233 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 06:47:38,332 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 06:47:38,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:47:38,520 INFO L93 Difference]: Finished difference Result 2226 states and 3324 transitions. [2021-12-18 06:47:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 06:47:38,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 226 [2021-12-18 06:47:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:47:38,529 INFO L225 Difference]: With dead ends: 2226 [2021-12-18 06:47:38,529 INFO L226 Difference]: Without dead ends: 2223 [2021-12-18 06:47:38,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:47:38,531 INFO L933 BasicCegarLoop]: 1519 mSDtfsCounter, 2251 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 652 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-18 06:47:38,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2377 Valid, 2742 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 909 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-12-18 06:47:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2021-12-18 06:47:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2172. [2021-12-18 06:47:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 1693 states have (on average 1.440637920850561) internal successors, (2439), 1716 states have internal predecessors, (2439), 397 states have call successors, (397), 82 states have call predecessors, (397), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-12-18 06:47:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3231 transitions. [2021-12-18 06:47:38,585 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3231 transitions. Word has length 226 [2021-12-18 06:47:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:47:38,586 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 3231 transitions. [2021-12-18 06:47:38,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 06:47:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3231 transitions. [2021-12-18 06:47:38,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-12-18 06:47:38,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:47:38,588 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 1, 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 06:47:38,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 06:47:38,589 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:47:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:47:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1289353621, now seen corresponding path program 1 times [2021-12-18 06:47:38,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:47:38,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385954672] [2021-12-18 06:47:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:47:38,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:47:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:47:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:47:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:47:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:47:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:47:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:47:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:47:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:47:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:47:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:47:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:47:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:47:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:47:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:47:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:47:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-18 06:47:38,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:47:38,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385954672] [2021-12-18 06:47:38,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385954672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:47:38,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:47:38,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:47:38,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151152847] [2021-12-18 06:47:38,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:47:38,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:47:38,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:47:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:47:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:47:38,882 INFO L87 Difference]: Start difference. First operand 2172 states and 3231 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 06:47:42,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:47:46,805 WARN L534 Checker$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 06:47:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:47:48,740 INFO L93 Difference]: Finished difference Result 4370 states and 6538 transitions. [2021-12-18 06:47:48,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 06:47:48,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 227 [2021-12-18 06:47:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:47:48,768 INFO L225 Difference]: With dead ends: 4370 [2021-12-18 06:47:48,769 INFO L226 Difference]: Without dead ends: 4359 [2021-12-18 06:47:48,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 06:47:48,773 INFO L933 BasicCegarLoop]: 1649 mSDtfsCounter, 3076 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 1135 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1135 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-12-18 06:47:48,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3202 Valid, 4589 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1135 Valid, 2268 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2021-12-18 06:47:48,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4359 states. [2021-12-18 06:47:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4359 to 4260. [2021-12-18 06:47:48,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 3332 states have (on average 1.445078031212485) internal successors, (4815), 3375 states have internal predecessors, (4815), 770 states have call successors, (770), 160 states have call predecessors, (770), 157 states have return successors, (768), 750 states have call predecessors, (768), 768 states have call successors, (768) [2021-12-18 06:47:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 6353 transitions. [2021-12-18 06:47:48,891 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 6353 transitions. Word has length 227 [2021-12-18 06:47:48,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:47:48,891 INFO L470 AbstractCegarLoop]: Abstraction has 4260 states and 6353 transitions. [2021-12-18 06:47:48,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 06:47:48,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 6353 transitions. [2021-12-18 06:47:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-12-18 06:47:48,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:47:48,904 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:47:48,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 06:47:48,905 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:47:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:47:48,905 INFO L85 PathProgramCache]: Analyzing trace with hash -581469749, now seen corresponding path program 1 times [2021-12-18 06:47:48,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:47:48,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469434442] [2021-12-18 06:47:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:47:48,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:47:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:47:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:47:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:47:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:47:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:47:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:47:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:47:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:47:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:47:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:47:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:47:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:47:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:47:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:47:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:47:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 06:47:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 06:47:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-18 06:47:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-18 06:47:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:47:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-18 06:47:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-18 06:47:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-18 06:47:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-18 06:47:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-12-18 06:47:49,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:47:49,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469434442] [2021-12-18 06:47:49,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469434442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:47:49,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:47:49,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 06:47:49,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441449922] [2021-12-18 06:47:49,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:47:49,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 06:47:49,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:47:49,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 06:47:49,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 06:47:49,312 INFO L87 Difference]: Start difference. First operand 4260 states and 6353 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 06:47:56,774 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 06:47:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:47:56,972 INFO L93 Difference]: Finished difference Result 8771 states and 13091 transitions. [2021-12-18 06:47:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 06:47:56,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 333 [2021-12-18 06:47:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:47:56,987 INFO L225 Difference]: With dead ends: 8771 [2021-12-18 06:47:56,988 INFO L226 Difference]: Without dead ends: 4550 [2021-12-18 06:47:56,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-18 06:47:57,000 INFO L933 BasicCegarLoop]: 1507 mSDtfsCounter, 1536 mSDsluCounter, 3297 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 841 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 4804 SdHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-18 06:47:57,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 4804 Invalid, 3224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 2382 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-12-18 06:47:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-12-18 06:47:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4438. [2021-12-18 06:47:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4438 states, 3484 states have (on average 1.444316877152698) internal successors, (5032), 3527 states have internal predecessors, (5032), 788 states have call successors, (788), 168 states have call predecessors, (788), 165 states have return successors, (786), 768 states have call predecessors, (786), 786 states have call successors, (786) [2021-12-18 06:47:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 6606 transitions. [2021-12-18 06:47:57,126 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 6606 transitions. Word has length 333 [2021-12-18 06:47:57,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:47:57,127 INFO L470 AbstractCegarLoop]: Abstraction has 4438 states and 6606 transitions. [2021-12-18 06:47:57,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 06:47:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 6606 transitions. [2021-12-18 06:47:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-12-18 06:47:57,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:47:57,139 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:47:57,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 06:47:57,139 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:47:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:47:57,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1932336199, now seen corresponding path program 1 times [2021-12-18 06:47:57,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:47:57,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483032380] [2021-12-18 06:47:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:47:57,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:47:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:47:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:47:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:47:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:47:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:47:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:47:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:47:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:47:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:47:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:47:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:47:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:47:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:47:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:47:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:47:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:47:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:47:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 06:47:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:47:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 06:47:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 06:47:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:47:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 06:47:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-18 06:47:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-18 06:47:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-18 06:47:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-18 06:47:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:47:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:47:57,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:47:57,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483032380] [2021-12-18 06:47:57,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483032380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:47:57,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:47:57,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 06:47:57,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645866150] [2021-12-18 06:47:57,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:47:57,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 06:47:57,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:47:57,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 06:47:57,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 06:47:57,498 INFO L87 Difference]: Start difference. First operand 4438 states and 6606 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:00,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:48:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:48:02,425 INFO L93 Difference]: Finished difference Result 8925 states and 13322 transitions. [2021-12-18 06:48:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 06:48:02,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 358 [2021-12-18 06:48:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:48:02,443 INFO L225 Difference]: With dead ends: 8925 [2021-12-18 06:48:02,443 INFO L226 Difference]: Without dead ends: 4544 [2021-12-18 06:48:02,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-18 06:48:02,457 INFO L933 BasicCegarLoop]: 1488 mSDtfsCounter, 1820 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 1074 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 3822 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1074 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-18 06:48:02,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 3822 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1074 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-18 06:48:02,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2021-12-18 06:48:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4442. [2021-12-18 06:48:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 3488 states have (on average 1.4438073394495412) internal successors, (5036), 3531 states have internal predecessors, (5036), 788 states have call successors, (788), 168 states have call predecessors, (788), 165 states have return successors, (786), 768 states have call predecessors, (786), 786 states have call successors, (786) [2021-12-18 06:48:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 6610 transitions. [2021-12-18 06:48:02,580 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 6610 transitions. Word has length 358 [2021-12-18 06:48:02,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:48:02,581 INFO L470 AbstractCegarLoop]: Abstraction has 4442 states and 6610 transitions. [2021-12-18 06:48:02,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 6610 transitions. [2021-12-18 06:48:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-12-18 06:48:02,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:48:02,592 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:48:02,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 06:48:02,593 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:48:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:48:02,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1305899895, now seen corresponding path program 1 times [2021-12-18 06:48:02,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:48:02,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43344261] [2021-12-18 06:48:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:02,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:48:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:48:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:48:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:48:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:48:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:48:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:48:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:48:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:48:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:48:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:48:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:48:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:48:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:48:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:48:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:48:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:48:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 06:48:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:48:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 06:48:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 06:48:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:02,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 06:48:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:03,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-18 06:48:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-18 06:48:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-18 06:48:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-18 06:48:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:48:03,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:48:03,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43344261] [2021-12-18 06:48:03,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43344261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:48:03,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:48:03,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 06:48:03,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984082780] [2021-12-18 06:48:03,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:48:03,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 06:48:03,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:48:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 06:48:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:48:03,033 INFO L87 Difference]: Start difference. First operand 4442 states and 6610 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:07,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:48:07,259 INFO L93 Difference]: Finished difference Result 11501 states and 17584 transitions. [2021-12-18 06:48:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 06:48:07,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 358 [2021-12-18 06:48:07,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:48:07,295 INFO L225 Difference]: With dead ends: 11501 [2021-12-18 06:48:07,295 INFO L226 Difference]: Without dead ends: 7116 [2021-12-18 06:48:07,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-18 06:48:07,313 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2792 mSDsluCounter, 4784 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 1218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 6841 SdHoareTripleChecker+Invalid, 3559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-18 06:48:07,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2942 Valid, 6841 Invalid, 3559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1218 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-18 06:48:07,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7116 states. [2021-12-18 06:48:07,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7116 to 4450. [2021-12-18 06:48:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 3496 states have (on average 1.44279176201373) internal successors, (5044), 3539 states have internal predecessors, (5044), 788 states have call successors, (788), 168 states have call predecessors, (788), 165 states have return successors, (786), 768 states have call predecessors, (786), 786 states have call successors, (786) [2021-12-18 06:48:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 6618 transitions. [2021-12-18 06:48:07,485 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 6618 transitions. Word has length 358 [2021-12-18 06:48:07,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:48:07,485 INFO L470 AbstractCegarLoop]: Abstraction has 4450 states and 6618 transitions. [2021-12-18 06:48:07,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 6618 transitions. [2021-12-18 06:48:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-12-18 06:48:07,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:48:07,498 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:48:07,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 06:48:07,498 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:48:07,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:48:07,499 INFO L85 PathProgramCache]: Analyzing trace with hash -893982665, now seen corresponding path program 1 times [2021-12-18 06:48:07,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:48:07,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500209999] [2021-12-18 06:48:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:07,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:48:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:48:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:48:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:48:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:48:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:48:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:48:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:48:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:48:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:48:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:48:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:48:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:48:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:48:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:48:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:48:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:48:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 06:48:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:48:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 06:48:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 06:48:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 06:48:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-18 06:48:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-18 06:48:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-12-18 06:48:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-18 06:48:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:48:07,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:48:07,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500209999] [2021-12-18 06:48:07,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500209999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:48:07,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:48:07,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 06:48:07,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715572442] [2021-12-18 06:48:07,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:48:07,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 06:48:07,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:48:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 06:48:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:48:07,927 INFO L87 Difference]: Start difference. First operand 4450 states and 6618 transitions. Second operand has 8 states, 8 states have (on average 19.75) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:15,460 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 06:48:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:48:15,627 INFO L93 Difference]: Finished difference Result 11537 states and 17616 transitions. [2021-12-18 06:48:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 06:48:15,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 377 [2021-12-18 06:48:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:48:15,654 INFO L225 Difference]: With dead ends: 11537 [2021-12-18 06:48:15,655 INFO L226 Difference]: Without dead ends: 7144 [2021-12-18 06:48:15,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-18 06:48:15,673 INFO L933 BasicCegarLoop]: 2095 mSDtfsCounter, 2377 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 2969 mSolverCounterSat, 956 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 7696 SdHoareTripleChecker+Invalid, 3926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 2969 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-18 06:48:15,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2485 Valid, 7696 Invalid, 3926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 2969 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-12-18 06:48:15,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7144 states. [2021-12-18 06:48:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7144 to 4458. [2021-12-18 06:48:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 3504 states have (on average 1.4417808219178083) internal successors, (5052), 3547 states have internal predecessors, (5052), 788 states have call successors, (788), 168 states have call predecessors, (788), 165 states have return successors, (786), 768 states have call predecessors, (786), 786 states have call successors, (786) [2021-12-18 06:48:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 6626 transitions. [2021-12-18 06:48:15,876 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 6626 transitions. Word has length 377 [2021-12-18 06:48:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:48:15,877 INFO L470 AbstractCegarLoop]: Abstraction has 4458 states and 6626 transitions. [2021-12-18 06:48:15,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:15,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 6626 transitions. [2021-12-18 06:48:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-12-18 06:48:15,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:48:15,888 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:48:15,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 06:48:15,888 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:48:15,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:48:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash -952720224, now seen corresponding path program 1 times [2021-12-18 06:48:15,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:48:15,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996479938] [2021-12-18 06:48:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:15,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:48:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:48:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:48:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:48:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:48:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:48:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:48:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:48:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:48:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:48:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:48:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:48:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:48:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:48:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:48:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:48:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:48:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 06:48:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:48:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 06:48:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 06:48:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 06:48:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-18 06:48:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 06:48:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-18 06:48:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-12-18 06:48:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:48:16,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:48:16,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996479938] [2021-12-18 06:48:16,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996479938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:48:16,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:48:16,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 06:48:16,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822203586] [2021-12-18 06:48:16,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:48:16,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 06:48:16,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:48:16,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 06:48:16,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 06:48:16,251 INFO L87 Difference]: Start difference. First operand 4458 states and 6626 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:19,135 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 06:48:21,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:48:21,937 INFO L93 Difference]: Finished difference Result 8965 states and 13362 transitions. [2021-12-18 06:48:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 06:48:21,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 378 [2021-12-18 06:48:21,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:48:21,959 INFO L225 Difference]: With dead ends: 8965 [2021-12-18 06:48:21,959 INFO L226 Difference]: Without dead ends: 4564 [2021-12-18 06:48:21,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-18 06:48:21,972 INFO L933 BasicCegarLoop]: 1491 mSDtfsCounter, 1388 mSDsluCounter, 2864 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 812 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 4355 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 812 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-18 06:48:21,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 4355 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [812 Valid, 1822 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-12-18 06:48:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-12-18 06:48:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4462. [2021-12-18 06:48:22,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 3508 states have (on average 1.4412770809578108) internal successors, (5056), 3551 states have internal predecessors, (5056), 788 states have call successors, (788), 168 states have call predecessors, (788), 165 states have return successors, (786), 768 states have call predecessors, (786), 786 states have call successors, (786) [2021-12-18 06:48:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 6630 transitions. [2021-12-18 06:48:22,086 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 6630 transitions. Word has length 378 [2021-12-18 06:48:22,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:48:22,086 INFO L470 AbstractCegarLoop]: Abstraction has 4462 states and 6630 transitions. [2021-12-18 06:48:22,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:22,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 6630 transitions. [2021-12-18 06:48:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-12-18 06:48:22,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:48:22,096 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:48:22,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 06:48:22,097 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:48:22,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:48:22,097 INFO L85 PathProgramCache]: Analyzing trace with hash 955737566, now seen corresponding path program 1 times [2021-12-18 06:48:22,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:48:22,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538068063] [2021-12-18 06:48:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:22,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:48:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:48:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:48:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:48:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:48:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:48:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:48:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:48:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:48:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:48:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:48:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:48:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:48:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:48:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:48:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:48:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:48:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 06:48:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:48:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 06:48:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 06:48:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 06:48:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-18 06:48:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 06:48:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-18 06:48:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-12-18 06:48:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:48:22,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:48:22,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538068063] [2021-12-18 06:48:22,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538068063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:48:22,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:48:22,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 06:48:22,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575571051] [2021-12-18 06:48:22,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:48:22,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 06:48:22,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:48:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 06:48:22,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 06:48:22,493 INFO L87 Difference]: Start difference. First operand 4462 states and 6630 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:30,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:48:32,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:48:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:48:32,707 INFO L93 Difference]: Finished difference Result 11383 states and 17273 transitions. [2021-12-18 06:48:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 06:48:32,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 378 [2021-12-18 06:48:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:48:32,730 INFO L225 Difference]: With dead ends: 11383 [2021-12-18 06:48:32,731 INFO L226 Difference]: Without dead ends: 6978 [2021-12-18 06:48:32,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-18 06:48:32,743 INFO L933 BasicCegarLoop]: 2130 mSDtfsCounter, 2084 mSDsluCounter, 4084 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 922 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 6214 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 922 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-12-18 06:48:32,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2231 Valid, 6214 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [922 Valid, 2343 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2021-12-18 06:48:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2021-12-18 06:48:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 4602. [2021-12-18 06:48:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4602 states, 3620 states have (on average 1.4397790055248618) internal successors, (5212), 3663 states have internal predecessors, (5212), 816 states have call successors, (816), 168 states have call predecessors, (816), 165 states have return successors, (814), 796 states have call predecessors, (814), 814 states have call successors, (814) [2021-12-18 06:48:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 6842 transitions. [2021-12-18 06:48:32,903 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 6842 transitions. Word has length 378 [2021-12-18 06:48:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:48:32,903 INFO L470 AbstractCegarLoop]: Abstraction has 4602 states and 6842 transitions. [2021-12-18 06:48:32,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 6842 transitions. [2021-12-18 06:48:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2021-12-18 06:48:32,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:48:32,913 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:48:32,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 06:48:32,914 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:48:32,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:48:32,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1816451105, now seen corresponding path program 1 times [2021-12-18 06:48:32,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:48:32,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556865466] [2021-12-18 06:48:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:32,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:48:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:48:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:48:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:48:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:48:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:48:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:48:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:48:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:48:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:48:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:48:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:48:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:48:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:48:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:48:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:48:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:48:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 06:48:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:48:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 06:48:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 06:48:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 06:48:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-12-18 06:48:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-18 06:48:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-18 06:48:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2021-12-18 06:48:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:48:33,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:48:33,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556865466] [2021-12-18 06:48:33,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556865466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:48:33,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:48:33,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 06:48:33,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406367163] [2021-12-18 06:48:33,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:48:33,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 06:48:33,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:48:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 06:48:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:48:33,319 INFO L87 Difference]: Start difference. First operand 4602 states and 6842 transitions. Second operand has 8 states, 8 states have (on average 20.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:35,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:48:37,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:48:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:48:40,496 INFO L93 Difference]: Finished difference Result 12337 states and 18908 transitions. [2021-12-18 06:48:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 06:48:40,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 379 [2021-12-18 06:48:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:48:40,524 INFO L225 Difference]: With dead ends: 12337 [2021-12-18 06:48:40,524 INFO L226 Difference]: Without dead ends: 7792 [2021-12-18 06:48:40,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-18 06:48:40,538 INFO L933 BasicCegarLoop]: 2253 mSDtfsCounter, 2967 mSDsluCounter, 5254 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 1193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 7507 SdHoareTripleChecker+Invalid, 3661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1193 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-18 06:48:40,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3140 Valid, 7507 Invalid, 3661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1193 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-12-18 06:48:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2021-12-18 06:48:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 4610. [2021-12-18 06:48:40,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 3628 states have (on average 1.4388092613009922) internal successors, (5220), 3671 states have internal predecessors, (5220), 816 states have call successors, (816), 168 states have call predecessors, (816), 165 states have return successors, (814), 796 states have call predecessors, (814), 814 states have call successors, (814) [2021-12-18 06:48:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 6850 transitions. [2021-12-18 06:48:40,737 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 6850 transitions. Word has length 379 [2021-12-18 06:48:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:48:40,737 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 6850 transitions. [2021-12-18 06:48:40,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 6850 transitions. [2021-12-18 06:48:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-18 06:48:40,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:48:40,747 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:48:40,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 06:48:40,748 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:48:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:48:40,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1348571080, now seen corresponding path program 1 times [2021-12-18 06:48:40,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:48:40,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312473477] [2021-12-18 06:48:40,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:40,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:48:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:48:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:48:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:48:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:48:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:48:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:48:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:48:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:48:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:48:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:48:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:48:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:48:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:48:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:48:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:48:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:48:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 06:48:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:48:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 06:48:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 06:48:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 06:48:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 06:48:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-18 06:48:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-18 06:48:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-18 06:48:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:48:41,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:48:41,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312473477] [2021-12-18 06:48:41,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312473477] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 06:48:41,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059352892] [2021-12-18 06:48:41,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:41,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 06:48:41,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 06:48:41,166 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 06:48:41,169 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 06:48:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:42,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 3952 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 06:48:42,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:48:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:48:42,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:48:42,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059352892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:48:42,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 06:48:42,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-18 06:48:42,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062836380] [2021-12-18 06:48:42,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:48:42,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 06:48:42,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:48:42,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 06:48:42,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-18 06:48:42,528 INFO L87 Difference]: Start difference. First operand 4610 states and 6850 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:48:42,771 INFO L93 Difference]: Finished difference Result 11737 states and 17732 transitions. [2021-12-18 06:48:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 06:48:42,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 380 [2021-12-18 06:48:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:48:42,791 INFO L225 Difference]: With dead ends: 11737 [2021-12-18 06:48:42,791 INFO L226 Difference]: Without dead ends: 7184 [2021-12-18 06:48:42,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-18 06:48:42,800 INFO L933 BasicCegarLoop]: 2288 mSDtfsCounter, 694 mSDsluCounter, 4017 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 6305 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:48:42,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 6305 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 06:48:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2021-12-18 06:48:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 4898. [2021-12-18 06:48:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 3860 states have (on average 1.4362694300518135) internal successors, (5544), 3903 states have internal predecessors, (5544), 872 states have call successors, (872), 168 states have call predecessors, (872), 165 states have return successors, (870), 852 states have call predecessors, (870), 870 states have call successors, (870) [2021-12-18 06:48:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 7286 transitions. [2021-12-18 06:48:42,973 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 7286 transitions. Word has length 380 [2021-12-18 06:48:42,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:48:42,973 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 7286 transitions. [2021-12-18 06:48:42,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:48:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 7286 transitions. [2021-12-18 06:48:42,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-18 06:48:42,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:48:42,983 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:48:43,010 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 06:48:43,199 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,SelfDestructingSolverStorable13 [2021-12-18 06:48:43,200 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:48:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:48:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1294178182, now seen corresponding path program 1 times [2021-12-18 06:48:43,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:48:43,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155456231] [2021-12-18 06:48:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:43,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:48:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:48:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:48:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:48:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:48:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:48:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:48:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:48:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:48:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:48:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:48:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:48:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:48:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:48:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:48:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:48:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:48:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 06:48:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:48:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 06:48:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 06:48:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 06:48:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 06:48:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-18 06:48:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-18 06:48:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-18 06:48:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:48:43,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:48:43,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155456231] [2021-12-18 06:48:43,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155456231] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 06:48:43,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152468841] [2021-12-18 06:48:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:43,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 06:48:43,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 06:48:43,644 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 06:48:43,645 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 06:48:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:44,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 3949 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 06:48:44,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:48:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2021-12-18 06:48:45,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:48:45,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152468841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:48:45,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 06:48:45,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2021-12-18 06:48:45,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520394910] [2021-12-18 06:48:45,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:48:45,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 06:48:45,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:48:45,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 06:48:45,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-18 06:48:45,061 INFO L87 Difference]: Start difference. First operand 4898 states and 7286 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 3 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-18 06:48:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:48:46,183 INFO L93 Difference]: Finished difference Result 14586 states and 21721 transitions. [2021-12-18 06:48:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 06:48:46,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 3 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 380 [2021-12-18 06:48:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:48:46,234 INFO L225 Difference]: With dead ends: 14586 [2021-12-18 06:48:46,234 INFO L226 Difference]: Without dead ends: 14576 [2021-12-18 06:48:46,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-18 06:48:46,245 INFO L933 BasicCegarLoop]: 3435 mSDtfsCounter, 3097 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 6263 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 06:48:46,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3097 Valid, 6263 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 06:48:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14576 states. [2021-12-18 06:48:46,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14576 to 14542. [2021-12-18 06:48:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14542 states, 11480 states have (on average 1.4397212543554008) internal successors, (16528), 11623 states have internal predecessors, (16528), 2576 states have call successors, (2576), 492 states have call predecessors, (2576), 485 states have return successors, (2574), 2504 states have call predecessors, (2574), 2574 states have call successors, (2574) [2021-12-18 06:48:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14542 states to 14542 states and 21678 transitions. [2021-12-18 06:48:46,733 INFO L78 Accepts]: Start accepts. Automaton has 14542 states and 21678 transitions. Word has length 380 [2021-12-18 06:48:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:48:46,733 INFO L470 AbstractCegarLoop]: Abstraction has 14542 states and 21678 transitions. [2021-12-18 06:48:46,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 3 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-18 06:48:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 14542 states and 21678 transitions. [2021-12-18 06:48:46,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-18 06:48:46,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:48:46,757 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:48:46,782 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 06:48:46,967 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,SelfDestructingSolverStorable14 [2021-12-18 06:48:46,967 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:48:46,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:48:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash 273109828, now seen corresponding path program 1 times [2021-12-18 06:48:46,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:48:46,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743103859] [2021-12-18 06:48:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:46,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:48:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:48:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:48:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:48:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:48:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:48:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:48:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:48:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:48:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:48:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:48:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:48:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:48:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:48:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:48:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:48:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:48:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 06:48:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:48:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 06:48:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 06:48:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 06:48:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 06:48:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-18 06:48:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-18 06:48:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-18 06:48:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:48:47,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:48:47,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743103859] [2021-12-18 06:48:47,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743103859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:48:47,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:48:47,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 06:48:47,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679213975] [2021-12-18 06:48:47,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:48:47,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 06:48:47,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:48:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 06:48:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:48:47,324 INFO L87 Difference]: Start difference. First operand 14542 states and 21678 transitions. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-18 06:48:53,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:48:53,954 INFO L93 Difference]: Finished difference Result 38330 states and 57582 transitions. [2021-12-18 06:48:53,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 06:48:53,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 380 [2021-12-18 06:48:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:48:54,050 INFO L225 Difference]: With dead ends: 38330 [2021-12-18 06:48:54,050 INFO L226 Difference]: Without dead ends: 31031 [2021-12-18 06:48:54,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-12-18 06:48:54,081 INFO L933 BasicCegarLoop]: 1907 mSDtfsCounter, 5238 mSDsluCounter, 3989 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 2406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5404 SdHoareTripleChecker+Valid, 5896 SdHoareTripleChecker+Invalid, 4973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2406 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-18 06:48:54,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5404 Valid, 5896 Invalid, 4973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2406 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-18 06:48:54,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31031 states. [2021-12-18 06:48:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31031 to 14548. [2021-12-18 06:48:54,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14548 states, 11486 states have (on average 1.4394915549364444) internal successors, (16534), 11631 states have internal predecessors, (16534), 2576 states have call successors, (2576), 492 states have call predecessors, (2576), 485 states have return successors, (2574), 2502 states have call predecessors, (2574), 2574 states have call successors, (2574) [2021-12-18 06:48:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14548 states to 14548 states and 21684 transitions. [2021-12-18 06:48:54,841 INFO L78 Accepts]: Start accepts. Automaton has 14548 states and 21684 transitions. Word has length 380 [2021-12-18 06:48:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:48:54,842 INFO L470 AbstractCegarLoop]: Abstraction has 14548 states and 21684 transitions. [2021-12-18 06:48:54,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-18 06:48:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 14548 states and 21684 transitions. [2021-12-18 06:48:54,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-12-18 06:48:54,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:48:54,866 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:48:54,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 06:48:54,867 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:48:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:48:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1941666825, now seen corresponding path program 1 times [2021-12-18 06:48:54,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:48:54,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411982781] [2021-12-18 06:48:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:48:54,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:48:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:48:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:48:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:48:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:48:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:48:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:48:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:48:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:48:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:48:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:48:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:48:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:48:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:48:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:48:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:48:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:48:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:48:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 06:48:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 06:48:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 06:48:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 06:48:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:48:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 06:48:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 06:48:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-18 06:48:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-18 06:48:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-12-18 06:48:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:48:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:48:55,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:48:55,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411982781] [2021-12-18 06:48:55,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411982781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:48:55,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:48:55,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 06:48:55,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528438646] [2021-12-18 06:48:55,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:48:55,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 06:48:55,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:48:55,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 06:48:55,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:48:55,284 INFO L87 Difference]: Start difference. First operand 14548 states and 21684 transitions. Second operand has 8 states, 8 states have (on average 20.25) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:49:02,188 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 06:49:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:49:02,558 INFO L93 Difference]: Finished difference Result 37881 states and 57583 transitions. [2021-12-18 06:49:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 06:49:02,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 381 [2021-12-18 06:49:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:49:02,633 INFO L225 Difference]: With dead ends: 37881 [2021-12-18 06:49:02,633 INFO L226 Difference]: Without dead ends: 23390 [2021-12-18 06:49:02,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-18 06:49:02,673 INFO L933 BasicCegarLoop]: 1879 mSDtfsCounter, 2610 mSDsluCounter, 3734 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 1395 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1395 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-18 06:49:02,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2736 Valid, 5613 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1395 Valid, 1898 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-12-18 06:49:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23390 states. [2021-12-18 06:49:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23390 to 14560. [2021-12-18 06:49:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14560 states, 11498 states have (on average 1.4390328752826578) internal successors, (16546), 11643 states have internal predecessors, (16546), 2576 states have call successors, (2576), 492 states have call predecessors, (2576), 485 states have return successors, (2574), 2502 states have call predecessors, (2574), 2574 states have call successors, (2574) [2021-12-18 06:49:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14560 states to 14560 states and 21696 transitions. [2021-12-18 06:49:03,304 INFO L78 Accepts]: Start accepts. Automaton has 14560 states and 21696 transitions. Word has length 381 [2021-12-18 06:49:03,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:49:03,304 INFO L470 AbstractCegarLoop]: Abstraction has 14560 states and 21696 transitions. [2021-12-18 06:49:03,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:49:03,305 INFO L276 IsEmpty]: Start isEmpty. Operand 14560 states and 21696 transitions. [2021-12-18 06:49:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-12-18 06:49:03,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:49:03,323 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:49:03,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 06:49:03,323 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:49:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:49:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1972531690, now seen corresponding path program 1 times [2021-12-18 06:49:03,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:49:03,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832917315] [2021-12-18 06:49:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:49:03,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:49:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:49:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:49:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:49:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:49:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:49:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:49:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:49:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:49:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:49:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:49:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:49:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:49:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:49:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:49:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:49:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:49:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 06:49:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 06:49:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 06:49:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 06:49:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-18 06:49:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2021-12-18 06:49:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-12-18 06:49:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-18 06:49:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-18 06:49:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2021-12-18 06:49:04,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:49:04,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832917315] [2021-12-18 06:49:04,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832917315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:49:04,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:49:04,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-12-18 06:49:04,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863962830] [2021-12-18 06:49:04,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:49:04,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-18 06:49:04,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:49:04,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-18 06:49:04,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2021-12-18 06:49:04,260 INFO L87 Difference]: Start difference. First operand 14560 states and 21696 transitions. Second operand has 24 states, 23 states have (on average 7.521739130434782) internal successors, (173), 16 states have internal predecessors, (173), 6 states have call successors, (32), 7 states have call predecessors, (32), 4 states have return successors, (31), 8 states have call predecessors, (31), 6 states have call successors, (31) [2021-12-18 06:49:22,332 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 06:49:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:49:23,032 INFO L93 Difference]: Finished difference Result 34489 states and 53151 transitions. [2021-12-18 06:49:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-18 06:49:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.521739130434782) internal successors, (173), 16 states have internal predecessors, (173), 6 states have call successors, (32), 7 states have call predecessors, (32), 4 states have return successors, (31), 8 states have call predecessors, (31), 6 states have call successors, (31) Word has length 383 [2021-12-18 06:49:23,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:49:23,125 INFO L225 Difference]: With dead ends: 34489 [2021-12-18 06:49:23,125 INFO L226 Difference]: Without dead ends: 27148 [2021-12-18 06:49:23,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=383, Invalid=2923, Unknown=0, NotChecked=0, Total=3306 [2021-12-18 06:49:23,159 INFO L933 BasicCegarLoop]: 2004 mSDtfsCounter, 6876 mSDsluCounter, 23756 mSDsCounter, 0 mSdLazyCounter, 15057 mSolverCounterSat, 2993 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6935 SdHoareTripleChecker+Valid, 25760 SdHoareTripleChecker+Invalid, 18051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2993 IncrementalHoareTripleChecker+Valid, 15057 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2021-12-18 06:49:23,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6935 Valid, 25760 Invalid, 18051 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2993 Valid, 15057 Invalid, 1 Unknown, 0 Unchecked, 16.8s Time] [2021-12-18 06:49:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27148 states. [2021-12-18 06:49:24,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27148 to 19717. [2021-12-18 06:49:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19717 states, 15744 states have (on average 1.4526803861788617) internal successors, (22871), 15890 states have internal predecessors, (22871), 3483 states have call successors, (3483), 496 states have call predecessors, (3483), 489 states have return successors, (3481), 3408 states have call predecessors, (3481), 3481 states have call successors, (3481) [2021-12-18 06:49:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19717 states to 19717 states and 29835 transitions. [2021-12-18 06:49:24,284 INFO L78 Accepts]: Start accepts. Automaton has 19717 states and 29835 transitions. Word has length 383 [2021-12-18 06:49:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:49:24,285 INFO L470 AbstractCegarLoop]: Abstraction has 19717 states and 29835 transitions. [2021-12-18 06:49:24,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.521739130434782) internal successors, (173), 16 states have internal predecessors, (173), 6 states have call successors, (32), 7 states have call predecessors, (32), 4 states have return successors, (31), 8 states have call predecessors, (31), 6 states have call successors, (31) [2021-12-18 06:49:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 19717 states and 29835 transitions. [2021-12-18 06:49:24,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-12-18 06:49:24,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:49:24,313 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:49:24,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 06:49:24,313 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:49:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:49:24,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1425042328, now seen corresponding path program 1 times [2021-12-18 06:49:24,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:49:24,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374455831] [2021-12-18 06:49:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:49:24,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:49:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:49:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:49:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:49:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:49:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:49:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:49:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:49:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:49:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:49:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:49:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:49:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:49:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:49:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:49:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:49:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:49:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 06:49:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 06:49:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 06:49:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 06:49:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-18 06:49:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2021-12-18 06:49:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-12-18 06:49:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:25,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-18 06:49:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-18 06:49:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:49:25,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:49:25,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374455831] [2021-12-18 06:49:25,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374455831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:49:25,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:49:25,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 06:49:25,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264824380] [2021-12-18 06:49:25,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:49:25,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 06:49:25,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:49:25,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 06:49:25,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-12-18 06:49:25,116 INFO L87 Difference]: Start difference. First operand 19717 states and 29835 transitions. Second operand has 18 states, 16 states have (on average 10.25) internal successors, (164), 10 states have internal predecessors, (164), 4 states have call successors, (30), 7 states have call predecessors, (30), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-18 06:49:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:49:38,230 INFO L93 Difference]: Finished difference Result 40510 states and 61971 transitions. [2021-12-18 06:49:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 06:49:38,231 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 10.25) internal successors, (164), 10 states have internal predecessors, (164), 4 states have call successors, (30), 7 states have call predecessors, (30), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 383 [2021-12-18 06:49:38,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:49:38,287 INFO L225 Difference]: With dead ends: 40510 [2021-12-18 06:49:38,287 INFO L226 Difference]: Without dead ends: 20907 [2021-12-18 06:49:38,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2021-12-18 06:49:38,321 INFO L933 BasicCegarLoop]: 1936 mSDtfsCounter, 2891 mSDsluCounter, 19571 mSDsCounter, 0 mSdLazyCounter, 8846 mSolverCounterSat, 1315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2953 SdHoareTripleChecker+Valid, 21507 SdHoareTripleChecker+Invalid, 10161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1315 IncrementalHoareTripleChecker+Valid, 8846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-12-18 06:49:38,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2953 Valid, 21507 Invalid, 10161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1315 Valid, 8846 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2021-12-18 06:49:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20907 states. [2021-12-18 06:49:39,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20907 to 14665. [2021-12-18 06:49:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14665 states, 11580 states have (on average 1.4372193436960277) internal successors, (16643), 11726 states have internal predecessors, (16643), 2595 states have call successors, (2595), 496 states have call predecessors, (2595), 489 states have return successors, (2593), 2520 states have call predecessors, (2593), 2593 states have call successors, (2593) [2021-12-18 06:49:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14665 states to 14665 states and 21831 transitions. [2021-12-18 06:49:39,160 INFO L78 Accepts]: Start accepts. Automaton has 14665 states and 21831 transitions. Word has length 383 [2021-12-18 06:49:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:49:39,161 INFO L470 AbstractCegarLoop]: Abstraction has 14665 states and 21831 transitions. [2021-12-18 06:49:39,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 10.25) internal successors, (164), 10 states have internal predecessors, (164), 4 states have call successors, (30), 7 states have call predecessors, (30), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-18 06:49:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 14665 states and 21831 transitions. [2021-12-18 06:49:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-12-18 06:49:39,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:49:39,181 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:49:39,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-18 06:49:39,183 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:49:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:49:39,184 INFO L85 PathProgramCache]: Analyzing trace with hash -160902097, now seen corresponding path program 1 times [2021-12-18 06:49:39,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:49:39,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319112330] [2021-12-18 06:49:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:49:39,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:49:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:49:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:49:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:49:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:49:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:49:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:49:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:49:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:49:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:49:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:49:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:49:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:49:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:49:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:49:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:49:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:49:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 06:49:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 06:49:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 06:49:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-18 06:49:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-18 06:49:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-12-18 06:49:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-18 06:49:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-18 06:49:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-12-18 06:49:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:49:39,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:49:39,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319112330] [2021-12-18 06:49:39,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319112330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:49:39,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:49:39,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 06:49:39,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749855126] [2021-12-18 06:49:39,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:49:39,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 06:49:39,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:49:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 06:49:39,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-18 06:49:39,770 INFO L87 Difference]: Start difference. First operand 14665 states and 21831 transitions. Second operand has 14 states, 14 states have (on average 12.142857142857142) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (30), 8 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:49:49,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:49:49,333 INFO L93 Difference]: Finished difference Result 41134 states and 62901 transitions. [2021-12-18 06:49:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 06:49:49,334 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.142857142857142) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (30), 8 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 389 [2021-12-18 06:49:49,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:49:49,419 INFO L225 Difference]: With dead ends: 41134 [2021-12-18 06:49:49,419 INFO L226 Difference]: Without dead ends: 26583 [2021-12-18 06:49:49,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-12-18 06:49:49,547 INFO L933 BasicCegarLoop]: 1972 mSDtfsCounter, 5998 mSDsluCounter, 11306 mSDsCounter, 0 mSdLazyCounter, 5809 mSolverCounterSat, 2412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5999 SdHoareTripleChecker+Valid, 13278 SdHoareTripleChecker+Invalid, 8221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2412 IncrementalHoareTripleChecker+Valid, 5809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-18 06:49:49,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5999 Valid, 13278 Invalid, 8221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2412 Valid, 5809 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-12-18 06:49:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26583 states. [2021-12-18 06:49:50,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26583 to 14749. [2021-12-18 06:49:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14749 states, 11652 states have (on average 1.4345176793683487) internal successors, (16715), 11798 states have internal predecessors, (16715), 2595 states have call successors, (2595), 496 states have call predecessors, (2595), 501 states have return successors, (2653), 2532 states have call predecessors, (2653), 2593 states have call successors, (2653) [2021-12-18 06:49:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14749 states to 14749 states and 21963 transitions. [2021-12-18 06:49:50,502 INFO L78 Accepts]: Start accepts. Automaton has 14749 states and 21963 transitions. Word has length 389 [2021-12-18 06:49:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:49:50,503 INFO L470 AbstractCegarLoop]: Abstraction has 14749 states and 21963 transitions. [2021-12-18 06:49:50,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.142857142857142) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (30), 8 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:49:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 14749 states and 21963 transitions. [2021-12-18 06:49:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-12-18 06:49:50,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:49:50,520 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:49:50,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-18 06:49:50,520 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:49:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:49:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2092010551, now seen corresponding path program 1 times [2021-12-18 06:49:50,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:49:50,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272145432] [2021-12-18 06:49:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:49:50,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:49:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:49:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:49:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:49:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:49:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:49:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:49:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:49:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:49:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:49:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:49:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:49:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:49:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:49:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:49:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:49:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:50,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:49:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:49:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 06:49:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 06:49:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 06:49:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 06:49:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-18 06:49:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:49:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-18 06:49:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 06:49:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-18 06:49:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-18 06:49:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-12-18 06:49:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:49:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2021-12-18 06:49:51,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:49:51,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272145432] [2021-12-18 06:49:51,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272145432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:49:51,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:49:51,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-18 06:49:51,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998090430] [2021-12-18 06:49:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:49:51,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-18 06:49:51,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:49:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-18 06:49:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2021-12-18 06:49:51,216 INFO L87 Difference]: Start difference. First operand 14749 states and 21963 transitions. Second operand has 25 states, 24 states have (on average 7.541666666666667) internal successors, (181), 16 states have internal predecessors, (181), 6 states have call successors, (33), 8 states have call predecessors, (33), 4 states have return successors, (32), 8 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-18 06:50:10,855 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 06:50:11,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:50:11,359 INFO L93 Difference]: Finished difference Result 34663 states and 53367 transitions. [2021-12-18 06:50:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-18 06:50:11,359 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 7.541666666666667) internal successors, (181), 16 states have internal predecessors, (181), 6 states have call successors, (33), 8 states have call predecessors, (33), 4 states have return successors, (32), 8 states have call predecessors, (32), 6 states have call successors, (32) Word has length 393 [2021-12-18 06:50:11,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:50:11,438 INFO L225 Difference]: With dead ends: 34663 [2021-12-18 06:50:11,438 INFO L226 Difference]: Without dead ends: 27256 [2021-12-18 06:50:11,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=398, Invalid=3024, Unknown=0, NotChecked=0, Total=3422 [2021-12-18 06:50:11,463 INFO L933 BasicCegarLoop]: 2016 mSDtfsCounter, 7368 mSDsluCounter, 25435 mSDsCounter, 0 mSdLazyCounter, 16145 mSolverCounterSat, 3326 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7426 SdHoareTripleChecker+Valid, 27451 SdHoareTripleChecker+Invalid, 19472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3326 IncrementalHoareTripleChecker+Valid, 16145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-12-18 06:50:11,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7426 Valid, 27451 Invalid, 19472 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3326 Valid, 16145 Invalid, 1 Unknown, 0 Unchecked, 17.9s Time] [2021-12-18 06:50:11,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27256 states. [2021-12-18 06:50:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27256 to 19849. [2021-12-18 06:50:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19849 states, 15852 states have (on average 1.449596265455463) internal successors, (22979), 15998 states have internal predecessors, (22979), 3495 states have call successors, (3495), 496 states have call predecessors, (3495), 501 states have return successors, (3601), 3432 states have call predecessors, (3601), 3493 states have call successors, (3601) [2021-12-18 06:50:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19849 states to 19849 states and 30075 transitions. [2021-12-18 06:50:12,567 INFO L78 Accepts]: Start accepts. Automaton has 19849 states and 30075 transitions. Word has length 393 [2021-12-18 06:50:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:50:12,568 INFO L470 AbstractCegarLoop]: Abstraction has 19849 states and 30075 transitions. [2021-12-18 06:50:12,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 7.541666666666667) internal successors, (181), 16 states have internal predecessors, (181), 6 states have call successors, (33), 8 states have call predecessors, (33), 4 states have return successors, (32), 8 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-18 06:50:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 19849 states and 30075 transitions. [2021-12-18 06:50:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-12-18 06:50:12,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:50:12,589 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:50:12,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-18 06:50:12,589 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:50:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:50:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1194617273, now seen corresponding path program 1 times [2021-12-18 06:50:12,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:50:12,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933057057] [2021-12-18 06:50:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:50:12,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:50:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:50:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:50:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:50:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:50:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:50:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:50:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:50:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:50:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:50:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:50:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:50:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:50:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:50:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:50:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:50:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:50:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 06:50:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 06:50:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 06:50:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 06:50:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-18 06:50:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-18 06:50:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 06:50:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-18 06:50:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-18 06:50:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-12-18 06:50:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-18 06:50:13,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:50:13,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933057057] [2021-12-18 06:50:13,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933057057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:50:13,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:50:13,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-18 06:50:13,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886753110] [2021-12-18 06:50:13,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:50:13,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 06:50:13,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:50:13,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 06:50:13,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-12-18 06:50:13,337 INFO L87 Difference]: Start difference. First operand 19849 states and 30075 transitions. Second operand has 19 states, 17 states have (on average 10.117647058823529) internal successors, (172), 10 states have internal predecessors, (172), 4 states have call successors, (31), 8 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-18 06:50:17,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:50:20,913 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 06:50:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:50:30,250 INFO L93 Difference]: Finished difference Result 40750 states and 62331 transitions. [2021-12-18 06:50:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 06:50:30,252 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 10.117647058823529) internal successors, (172), 10 states have internal predecessors, (172), 4 states have call successors, (31), 8 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 393 [2021-12-18 06:50:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:50:30,325 INFO L225 Difference]: With dead ends: 40750 [2021-12-18 06:50:30,325 INFO L226 Difference]: Without dead ends: 21015 [2021-12-18 06:50:30,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2021-12-18 06:50:30,377 INFO L933 BasicCegarLoop]: 1962 mSDtfsCounter, 3309 mSDsluCounter, 20146 mSDsCounter, 0 mSdLazyCounter, 8331 mSolverCounterSat, 1597 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3371 SdHoareTripleChecker+Valid, 22108 SdHoareTripleChecker+Invalid, 9929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1597 IncrementalHoareTripleChecker+Valid, 8331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-12-18 06:50:30,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3371 Valid, 22108 Invalid, 9929 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1597 Valid, 8331 Invalid, 1 Unknown, 0 Unchecked, 15.2s Time] [2021-12-18 06:50:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21015 states. [2021-12-18 06:50:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21015 to 14749. [2021-12-18 06:50:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14749 states, 11652 states have (on average 1.4345176793683487) internal successors, (16715), 11798 states have internal predecessors, (16715), 2595 states have call successors, (2595), 496 states have call predecessors, (2595), 501 states have return successors, (2653), 2532 states have call predecessors, (2653), 2593 states have call successors, (2653) [2021-12-18 06:50:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14749 states to 14749 states and 21963 transitions. [2021-12-18 06:50:31,332 INFO L78 Accepts]: Start accepts. Automaton has 14749 states and 21963 transitions. Word has length 393 [2021-12-18 06:50:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:50:31,333 INFO L470 AbstractCegarLoop]: Abstraction has 14749 states and 21963 transitions. [2021-12-18 06:50:31,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 10.117647058823529) internal successors, (172), 10 states have internal predecessors, (172), 4 states have call successors, (31), 8 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-18 06:50:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 14749 states and 21963 transitions. [2021-12-18 06:50:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-12-18 06:50:31,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:50:31,351 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:50:31,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-18 06:50:31,351 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:50:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:50:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1534481643, now seen corresponding path program 1 times [2021-12-18 06:50:31,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:50:31,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779101459] [2021-12-18 06:50:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:50:31,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:50:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:50:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:50:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:50:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:50:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:50:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:50:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:50:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:50:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:50:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:50:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:50:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:50:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:50:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:50:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:50:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:50:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:50:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 06:50:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 06:50:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 06:50:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:50:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 06:50:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 06:50:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-18 06:50:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:50:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-18 06:50:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-18 06:50:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-12-18 06:50:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-18 06:50:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-12-18 06:50:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:50:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-12-18 06:50:32,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:50:32,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779101459] [2021-12-18 06:50:32,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779101459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:50:32,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:50:32,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-18 06:50:32,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767215791] [2021-12-18 06:50:32,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:50:32,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-18 06:50:32,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:50:32,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-18 06:50:32,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-12-18 06:50:32,189 INFO L87 Difference]: Start difference. First operand 14749 states and 21963 transitions. Second operand has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 18 states have internal predecessors, (177), 7 states have call successors, (35), 8 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 7 states have call successors, (34) [2021-12-18 06:50:38,823 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 06:50:41,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:51:04,737 WARN L534 Checker$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 06:51:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:51:05,432 INFO L93 Difference]: Finished difference Result 38530 states and 60248 transitions. [2021-12-18 06:51:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-18 06:51:05,434 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 18 states have internal predecessors, (177), 7 states have call successors, (35), 8 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 7 states have call successors, (34) Word has length 409 [2021-12-18 06:51:05,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:51:05,539 INFO L225 Difference]: With dead ends: 38530 [2021-12-18 06:51:05,540 INFO L226 Difference]: Without dead ends: 31123 [2021-12-18 06:51:05,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=455, Invalid=2967, Unknown=0, NotChecked=0, Total=3422 [2021-12-18 06:51:05,573 INFO L933 BasicCegarLoop]: 2523 mSDtfsCounter, 8685 mSDsluCounter, 30913 mSDsCounter, 0 mSdLazyCounter, 18763 mSolverCounterSat, 3655 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8766 SdHoareTripleChecker+Valid, 33436 SdHoareTripleChecker+Invalid, 22421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3655 IncrementalHoareTripleChecker+Valid, 18763 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2021-12-18 06:51:05,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8766 Valid, 33436 Invalid, 22421 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3655 Valid, 18763 Invalid, 3 Unknown, 0 Unchecked, 30.3s Time] [2021-12-18 06:51:05,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31123 states. [2021-12-18 06:51:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31123 to 14965. [2021-12-18 06:51:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14965 states, 11844 states have (on average 1.4355791962174942) internal successors, (17003), 11990 states have internal predecessors, (17003), 2619 states have call successors, (2619), 496 states have call predecessors, (2619), 501 states have return successors, (2677), 2556 states have call predecessors, (2677), 2617 states have call successors, (2677) [2021-12-18 06:51:06,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14965 states to 14965 states and 22299 transitions. [2021-12-18 06:51:06,753 INFO L78 Accepts]: Start accepts. Automaton has 14965 states and 22299 transitions. Word has length 409 [2021-12-18 06:51:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:51:06,753 INFO L470 AbstractCegarLoop]: Abstraction has 14965 states and 22299 transitions. [2021-12-18 06:51:06,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 18 states have internal predecessors, (177), 7 states have call successors, (35), 8 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 7 states have call successors, (34) [2021-12-18 06:51:06,754 INFO L276 IsEmpty]: Start isEmpty. Operand 14965 states and 22299 transitions. [2021-12-18 06:51:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-12-18 06:51:06,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:51:06,772 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:06,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-18 06:51:06,773 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:51:06,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:51:06,773 INFO L85 PathProgramCache]: Analyzing trace with hash 637088365, now seen corresponding path program 1 times [2021-12-18 06:51:06,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:51:06,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463946264] [2021-12-18 06:51:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:51:06,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:51:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:51:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:51:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:51:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:51:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:51:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:51:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:51:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:51:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:51:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:51:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:51:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:51:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:51:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:51:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:51:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:51:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 06:51:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 06:51:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 06:51:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:51:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 06:51:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 06:51:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-18 06:51:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-18 06:51:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-18 06:51:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-12-18 06:51:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-18 06:51:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-12-18 06:51:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2021-12-18 06:51:07,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:51:07,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463946264] [2021-12-18 06:51:07,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463946264] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 06:51:07,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126984310] [2021-12-18 06:51:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:51:07,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 06:51:07,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 06:51:07,543 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 06:51:07,563 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 06:51:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:08,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 4168 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-18 06:51:08,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:51:09,629 INFO L354 Elim1Store]: treesize reduction 776, result has 6.6 percent of original size [2021-12-18 06:51:09,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 64 [2021-12-18 06:51:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2021-12-18 06:51:09,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:51:09,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126984310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:51:09,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 06:51:09,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2021-12-18 06:51:09,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060729982] [2021-12-18 06:51:09,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:51:09,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 06:51:09,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:51:09,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 06:51:09,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-12-18 06:51:09,872 INFO L87 Difference]: Start difference. First operand 14965 states and 22299 transitions. Second operand has 12 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 4 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-12-18 06:51:18,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:51:18,013 INFO L93 Difference]: Finished difference Result 51244 states and 78809 transitions. [2021-12-18 06:51:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 06:51:18,014 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 4 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 409 [2021-12-18 06:51:18,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:51:18,129 INFO L225 Difference]: With dead ends: 51244 [2021-12-18 06:51:18,129 INFO L226 Difference]: Without dead ends: 36393 [2021-12-18 06:51:18,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2021-12-18 06:51:18,176 INFO L933 BasicCegarLoop]: 3352 mSDtfsCounter, 5289 mSDsluCounter, 17861 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 1121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5396 SdHoareTripleChecker+Valid, 21213 SdHoareTripleChecker+Invalid, 3956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1121 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-18 06:51:18,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5396 Valid, 21213 Invalid, 3956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1121 Valid, 2835 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-18 06:51:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36393 states. [2021-12-18 06:51:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36393 to 14977. [2021-12-18 06:51:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14977 states, 11856 states have (on average 1.435138326585695) internal successors, (17015), 12002 states have internal predecessors, (17015), 2619 states have call successors, (2619), 496 states have call predecessors, (2619), 501 states have return successors, (2677), 2556 states have call predecessors, (2677), 2617 states have call successors, (2677) [2021-12-18 06:51:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14977 states to 14977 states and 22311 transitions. [2021-12-18 06:51:19,523 INFO L78 Accepts]: Start accepts. Automaton has 14977 states and 22311 transitions. Word has length 409 [2021-12-18 06:51:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:51:19,523 INFO L470 AbstractCegarLoop]: Abstraction has 14977 states and 22311 transitions. [2021-12-18 06:51:19,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 4 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-12-18 06:51:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand 14977 states and 22311 transitions. [2021-12-18 06:51:19,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-12-18 06:51:19,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:51:19,542 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:19,570 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 06:51:19,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 06:51:19,748 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:51:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:51:19,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1865942319, now seen corresponding path program 1 times [2021-12-18 06:51:19,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:51:19,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113848560] [2021-12-18 06:51:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:51:19,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:51:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:51:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:51:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 06:51:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 06:51:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 06:51:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:51:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 06:51:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 06:51:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 06:51:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 06:51:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 06:51:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 06:51:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 06:51:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 06:51:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 06:51:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 06:51:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:51:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 06:51:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 06:51:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 06:51:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:51:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 06:51:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 06:51:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-18 06:51:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:51:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-18 06:51:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-18 06:51:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-18 06:51:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-12-18 06:51:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2021-12-18 06:51:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-12-18 06:51:20,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:51:20,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113848560] [2021-12-18 06:51:20,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113848560] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 06:51:20,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370030414] [2021-12-18 06:51:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:51:20,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 06:51:20,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 06:51:20,678 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 06:51:20,679 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 06:51:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:51:21,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 4183 conjuncts, 292 conjunts are in the unsatisfiable core [2021-12-18 06:51:21,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:51:22,211 INFO L354 Elim1Store]: treesize reduction 470, result has 19.4 percent of original size [2021-12-18 06:51:22,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 39 treesize of output 128 [2021-12-18 06:51:25,440 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 29 treesize of output 23 [2021-12-18 06:51:25,517 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 06:51:25,569 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 06:51:25,663 INFO L354 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2021-12-18 06:51:25,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 66 [2021-12-18 06:51:25,961 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 29 treesize of output 23 [2021-12-18 06:51:26,010 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 06:51:26,111 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 06:51:26,199 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-18 06:51:26,200 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 2 case distinctions, treesize of input 36 treesize of output 47 [2021-12-18 06:51:26,573 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 06:51:26,574 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 35 treesize of output 43 [2021-12-18 06:51:26,654 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 06:51:26,692 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 06:51:26,819 INFO L354 Elim1Store]: treesize reduction 54, result has 44.9 percent of original size [2021-12-18 06:51:26,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 46 treesize of output 78 [2021-12-18 06:51:27,437 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 06:51:27,439 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 35 treesize of output 43 [2021-12-18 06:51:27,499 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 06:51:27,529 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 06:51:27,634 INFO L354 Elim1Store]: treesize reduction 54, result has 44.9 percent of original size [2021-12-18 06:51:27,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 46 treesize of output 78 [2021-12-18 06:51:27,971 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 06:51:27,971 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 35 treesize of output 43 [2021-12-18 06:51:28,045 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 06:51:28,077 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 06:51:28,172 INFO L354 Elim1Store]: treesize reduction 54, result has 44.9 percent of original size [2021-12-18 06:51:28,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 46 treesize of output 78 [2021-12-18 06:51:28,541 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 06:51:28,542 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 35 treesize of output 43 [2021-12-18 06:51:28,584 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 06:51:28,634 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 06:51:28,747 INFO L354 Elim1Store]: treesize reduction 34, result has 54.1 percent of original size [2021-12-18 06:51:28,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 41 treesize of output 71 [2021-12-18 06:51:29,019 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 06:51:29,019 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 35 treesize of output 43 [2021-12-18 06:51:29,064 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 06:51:29,115 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 06:51:29,234 INFO L354 Elim1Store]: treesize reduction 34, result has 54.1 percent of original size [2021-12-18 06:51:29,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 41 treesize of output 71 [2021-12-18 06:51:29,590 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 06:51:29,591 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 35 treesize of output 43 [2021-12-18 06:51:29,689 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 06:51:29,719 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 06:51:29,815 INFO L354 Elim1Store]: treesize reduction 54, result has 44.9 percent of original size [2021-12-18 06:51:29,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 46 treesize of output 78 [2021-12-18 06:51:36,088 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 06:51:36,088 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 35 treesize of output 43 [2021-12-18 06:51:36,131 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 06:51:36,213 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 06:51:36,355 INFO L354 Elim1Store]: treesize reduction 34, result has 54.1 percent of original size [2021-12-18 06:51:36,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 41 treesize of output 71 [2021-12-18 06:51:37,388 INFO L354 Elim1Store]: treesize reduction 249, result has 29.5 percent of original size [2021-12-18 06:51:37,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 53 treesize of output 138 [2021-12-18 06:51:53,455 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 06:51:53,456 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 75 treesize of output 78 [2021-12-18 06:51:53,616 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 06:51:53,636 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 06:51:53,661 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 06:51:53,844 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-12-18 06:51:53,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 93 [2021-12-18 06:51:54,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,804 INFO L244 Elim1Store]: Index analysis took 141 ms [2021-12-18 06:51:54,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 38 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 80 [2021-12-18 06:51:54,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 23 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 104 [2021-12-18 06:51:54,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:54,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 38 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 80 [2021-12-18 06:51:57,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 06:51:57,493 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-12-18 06:51:57,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 06:51:57,502 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 55 [2021-12-18 06:51:58,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:58,079 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 06:51:58,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 40 [2021-12-18 06:51:58,140 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 23 treesize of output 15 [2021-12-18 06:51:58,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:58,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:58,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:58,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2021-12-18 06:51:59,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:59,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2021-12-18 06:51:59,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:59,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:59,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:59,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:59,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:59,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:51:59,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 69 [2021-12-18 06:52:00,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:52:00,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2021-12-18 06:52:00,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:52:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:52:00,595 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 06:52:00,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 62 [2021-12-18 06:52:00,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:52:00,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 62 treesize of output 64 [2021-12-18 06:52:00,610 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-12-18 06:52:00,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 06:52:00,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-12-18 06:52:00,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529104941] [2021-12-18 06:52:00,616 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 06:52:00,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 06:52:00,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:52:00,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 06:52:00,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2191, Unknown=1, NotChecked=0, Total=2352 [2021-12-18 06:52:00,618 INFO L87 Difference]: Start difference. First operand 14977 states and 22311 transitions. Second operand has 12 states, 11 states have (on average 16.0) internal successors, (176), 6 states have internal predecessors, (176), 3 states have call successors, (34), 8 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 06:52:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 06:52:00,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 399 SyntacticMatches, 24 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=160, Invalid=2191, Unknown=1, NotChecked=0, Total=2352 [2021-12-18 06:52:00,619 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:52:00,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 06:52:00,646 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 06:52:00,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 06:52:00,821 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5800b146 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-18 06:52:00,826 INFO L158 Benchmark]: Toolchain (without parser) took 293064.18ms. Allocated memory was 109.1MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 65.3MB in the beginning and 551.9MB in the end (delta: -486.5MB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2021-12-18 06:52:00,826 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory was 80.6MB in the beginning and 80.5MB in the end (delta: 26.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 06:52:00,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1519.87ms. Allocated memory was 109.1MB in the beginning and 148.9MB in the end (delta: 39.8MB). Free memory was 65.1MB in the beginning and 62.9MB in the end (delta: 2.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2021-12-18 06:52:00,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 189.04ms. Allocated memory is still 148.9MB. Free memory was 62.9MB in the beginning and 77.4MB in the end (delta: -14.5MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2021-12-18 06:52:00,826 INFO L158 Benchmark]: Boogie Preprocessor took 163.73ms. Allocated memory is still 148.9MB. Free memory was 77.4MB in the beginning and 55.4MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-18 06:52:00,827 INFO L158 Benchmark]: RCFGBuilder took 2582.23ms. Allocated memory was 148.9MB in the beginning and 260.0MB in the end (delta: 111.1MB). Free memory was 55.4MB in the beginning and 99.9MB in the end (delta: -44.5MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2021-12-18 06:52:00,827 INFO L158 Benchmark]: TraceAbstraction took 288602.31ms. Allocated memory was 260.0MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 99.9MB in the beginning and 551.9MB in the end (delta: -452.0MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2021-12-18 06:52:00,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory was 80.6MB in the beginning and 80.5MB in the end (delta: 26.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1519.87ms. Allocated memory was 109.1MB in the beginning and 148.9MB in the end (delta: 39.8MB). Free memory was 65.1MB in the beginning and 62.9MB in the end (delta: 2.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 189.04ms. Allocated memory is still 148.9MB. Free memory was 62.9MB in the beginning and 77.4MB in the end (delta: -14.5MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 163.73ms. Allocated memory is still 148.9MB. Free memory was 77.4MB in the beginning and 55.4MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * RCFGBuilder took 2582.23ms. Allocated memory was 148.9MB in the beginning and 260.0MB in the end (delta: 111.1MB). Free memory was 55.4MB in the beginning and 99.9MB in the end (delta: -44.5MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. * TraceAbstraction took 288602.31ms. Allocated memory was 260.0MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 99.9MB in the beginning and 551.9MB in the end (delta: -452.0MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5800b146 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5800b146: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-18 06:52:01,034 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-12-18 06:52:01,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 06:52:02,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 06:52:02,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 06:52:02,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 06:52:02,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 06:52:02,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 06:52:02,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 06:52:02,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 06:52:02,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 06:52:02,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 06:52:02,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 06:52:02,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 06:52:02,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 06:52:02,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 06:52:02,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 06:52:02,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 06:52:02,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 06:52:02,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 06:52:02,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 06:52:02,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 06:52:02,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 06:52:02,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 06:52:02,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 06:52:02,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 06:52:02,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 06:52:02,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 06:52:02,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 06:52:02,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 06:52:02,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 06:52:02,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 06:52:02,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 06:52:02,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 06:52:02,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 06:52:02,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 06:52:02,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 06:52:02,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 06:52:02,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 06:52:02,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 06:52:02,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 06:52:02,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 06:52:02,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 06:52:02,794 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-18 06:52:02,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 06:52:02,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 06:52:02,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 06:52:02,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 06:52:02,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 06:52:02,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 06:52:02,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 06:52:02,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 06:52:02,824 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 06:52:02,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 06:52:02,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 06:52:02,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 06:52:02,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 06:52:02,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 06:52:02,825 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 06:52:02,826 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-18 06:52:02,826 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-18 06:52:02,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 06:52:02,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 06:52:02,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 06:52:02,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 06:52:02,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 06:52:02,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 06:52:02,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 06:52:02,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 06:52:02,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 06:52:02,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 06:52:02,827 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-18 06:52:02,827 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-18 06:52:02,828 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 06:52:02,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 06:52:02,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 06:52:02,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 06:52:02,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-18 06:52:02,828 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2021-12-18 06:52:03,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 06:52:03,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 06:52:03,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 06:52:03,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 06:52:03,163 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 06:52:03,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-12-18 06:52:03,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df300bbd/d228ef55980b40c39f41c4c45a982b4b/FLAG6291a5a89 [2021-12-18 06:52:03,863 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 06:52:03,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-12-18 06:52:03,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df300bbd/d228ef55980b40c39f41c4c45a982b4b/FLAG6291a5a89 [2021-12-18 06:52:04,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df300bbd/d228ef55980b40c39f41c4c45a982b4b [2021-12-18 06:52:04,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 06:52:04,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 06:52:04,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 06:52:04,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 06:52:04,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 06:52:04,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:52:04" (1/1) ... [2021-12-18 06:52:04,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161de66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:04, skipping insertion in model container [2021-12-18 06:52:04,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:52:04" (1/1) ... [2021-12-18 06:52:04,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 06:52:04,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 06:52:05,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-12-18 06:52:05,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 06:52:05,671 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-18 06:52:05,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 06:52:05,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-12-18 06:52:05,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 06:52:05,958 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 06:52:06,179 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-12-18 06:52:06,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 06:52:06,254 INFO L208 MainTranslator]: Completed translation [2021-12-18 06:52:06,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06 WrapperNode [2021-12-18 06:52:06,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 06:52:06,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 06:52:06,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 06:52:06,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 06:52:06,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (1/1) ... [2021-12-18 06:52:06,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (1/1) ... [2021-12-18 06:52:06,441 INFO L137 Inliner]: procedures = 229, calls = 1591, calls flagged for inlining = 84, calls inlined = 76, statements flattened = 4304 [2021-12-18 06:52:06,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 06:52:06,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 06:52:06,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 06:52:06,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 06:52:06,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (1/1) ... [2021-12-18 06:52:06,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (1/1) ... [2021-12-18 06:52:06,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (1/1) ... [2021-12-18 06:52:06,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (1/1) ... [2021-12-18 06:52:06,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (1/1) ... [2021-12-18 06:52:06,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (1/1) ... [2021-12-18 06:52:06,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (1/1) ... [2021-12-18 06:52:06,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 06:52:06,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 06:52:06,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 06:52:06,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 06:52:06,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (1/1) ... [2021-12-18 06:52:06,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 06:52:06,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 06:52:06,646 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 06:52:06,670 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 06:52:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_get_mode [2021-12-18 06:52:06,684 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_get_mode [2021-12-18 06:52:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-18 06:52:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2021-12-18 06:52:06,685 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2021-12-18 06:52:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-18 06:52:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-18 06:52:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-18 06:52:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 06:52:06,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 06:52:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 06:52:06,685 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 06:52:06,686 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-12-18 06:52:06,686 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-12-18 06:52:06,686 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_format [2021-12-18 06:52:06,686 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_format [2021-12-18 06:52:06,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 06:52:06,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 06:52:06,686 INFO L130 BoogieDeclarations]: Found specification of procedure raid_io_hints [2021-12-18 06:52:06,686 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_io_hints [2021-12-18 06:52:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure raid_message [2021-12-18 06:52:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_message [2021-12-18 06:52:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 06:52:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 06:52:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-18 06:52:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-18 06:52:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_copies [2021-12-18 06:52:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_copies [2021-12-18 06:52:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 06:52:06,688 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 06:52:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 06:52:06,688 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 06:52:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure context_free [2021-12-18 06:52:06,689 INFO L138 BoogieDeclarations]: Found implementation of procedure context_free [2021-12-18 06:52:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 06:52:06,689 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 06:52:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-18 06:52:06,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-18 06:52:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure super_validate [2021-12-18 06:52:06,689 INFO L138 BoogieDeclarations]: Found implementation of procedure super_validate [2021-12-18 06:52:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure do_table_event [2021-12-18 06:52:06,689 INFO L138 BoogieDeclarations]: Found implementation of procedure do_table_event [2021-12-18 06:52:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 06:52:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 06:52:06,690 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 06:52:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 06:52:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure sync_page_io [2021-12-18 06:52:06,690 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_page_io [2021-12-18 06:52:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-18 06:52:06,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-18 06:52:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure to_sector [2021-12-18 06:52:06,692 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sector [2021-12-18 06:52:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-18 06:52:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-18 06:52:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 06:52:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-18 06:52:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 06:52:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-18 06:52:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-18 06:52:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-18 06:52:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure raid_iterate_devices [2021-12-18 06:52:06,693 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_iterate_devices [2021-12-18 06:52:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_device [2021-12-18 06:52:06,693 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_device [2021-12-18 06:52:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2021-12-18 06:52:06,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2021-12-18 06:52:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_suspend [2021-12-18 06:52:06,694 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_suspend [2021-12-18 06:52:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 06:52:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 06:52:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure super_sync [2021-12-18 06:52:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure super_sync [2021-12-18 06:52:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2021-12-18 06:52:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2021-12-18 06:52:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-18 06:52:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-18 06:52:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure md_wakeup_thread [2021-12-18 06:52:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure md_wakeup_thread [2021-12-18 06:52:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 06:52:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 06:52:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 06:52:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure raid_merge [2021-12-18 06:52:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_merge [2021-12-18 06:52:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 06:52:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 06:52:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure raid_map [2021-12-18 06:52:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_map [2021-12-18 06:52:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 06:52:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 06:52:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-12-18 06:52:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2021-12-18 06:52:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure md_stop [2021-12-18 06:52:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure md_stop [2021-12-18 06:52:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure raid_status [2021-12-18 06:52:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_status [2021-12-18 06:52:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-18 06:52:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-18 06:52:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 06:52:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 06:52:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure raid_dtr [2021-12-18 06:52:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_dtr [2021-12-18 06:52:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure dm_get_device [2021-12-18 06:52:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_get_device [2021-12-18 06:52:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 06:52:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 06:52:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 06:52:06,701 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 06:52:07,199 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 06:52:07,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 06:52:08,653 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 06:52:32,246 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 06:52:32,262 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 06:52:32,264 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 06:52:32,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:52:32 BoogieIcfgContainer [2021-12-18 06:52:32,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 06:52:32,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 06:52:32,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 06:52:32,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 06:52:32,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 06:52:04" (1/3) ... [2021-12-18 06:52:32,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400ae2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:52:32, skipping insertion in model container [2021-12-18 06:52:32,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:52:06" (2/3) ... [2021-12-18 06:52:32,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400ae2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:52:32, skipping insertion in model container [2021-12-18 06:52:32,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:52:32" (3/3) ... [2021-12-18 06:52:32,273 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-12-18 06:52:32,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 06:52:32,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 06:52:32,321 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 06:52:32,326 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 06:52:32,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 06:52:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 1134 states, 873 states have (on average 1.4421534936998854) internal successors, (1259), 894 states have internal predecessors, (1259), 216 states have call successors, (216), 44 states have call predecessors, (216), 43 states have return successors, (212), 208 states have call predecessors, (212), 212 states have call successors, (212) [2021-12-18 06:52:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-18 06:52:32,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:52:32,368 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:52:32,369 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:52:32,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:52:32,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1014089832, now seen corresponding path program 1 times [2021-12-18 06:52:32,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:52:32,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759769742] [2021-12-18 06:52:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:52:32,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:52:32,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:52:32,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:52:32,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-18 06:52:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:52:33,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-18 06:52:33,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:52:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2021-12-18 06:52:33,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:52:33,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:52:33,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759769742] [2021-12-18 06:52:33,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759769742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:52:33,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:52:33,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 06:52:33,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407306632] [2021-12-18 06:52:33,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:52:33,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 06:52:33,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:52:33,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 06:52:33,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 06:52:33,947 INFO L87 Difference]: Start difference. First operand has 1134 states, 873 states have (on average 1.4421534936998854) internal successors, (1259), 894 states have internal predecessors, (1259), 216 states have call successors, (216), 44 states have call predecessors, (216), 43 states have return successors, (212), 208 states have call predecessors, (212), 212 states have call successors, (212) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 06:52:34,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:52:34,049 INFO L93 Difference]: Finished difference Result 2263 states and 3384 transitions. [2021-12-18 06:52:34,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 06:52:34,051 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 221 [2021-12-18 06:52:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:52:34,064 INFO L225 Difference]: With dead ends: 2263 [2021-12-18 06:52:34,065 INFO L226 Difference]: Without dead ends: 1122 [2021-12-18 06:52:34,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 06:52:34,074 INFO L933 BasicCegarLoop]: 1679 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:52:34,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 06:52:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-12-18 06:52:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2021-12-18 06:52:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 867 states have (on average 1.4359861591695502) internal successors, (1245), 882 states have internal predecessors, (1245), 212 states have call successors, (212), 43 states have call predecessors, (212), 42 states have return successors, (207), 203 states have call predecessors, (207), 207 states have call successors, (207) [2021-12-18 06:52:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1664 transitions. [2021-12-18 06:52:34,149 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1664 transitions. Word has length 221 [2021-12-18 06:52:34,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:52:34,150 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1664 transitions. [2021-12-18 06:52:34,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 06:52:34,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1664 transitions. [2021-12-18 06:52:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-18 06:52:34,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:52:34,153 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:52:34,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-18 06:52:34,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:52:34,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:52:34,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:52:34,381 INFO L85 PathProgramCache]: Analyzing trace with hash -814978680, now seen corresponding path program 1 times [2021-12-18 06:52:34,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:52:34,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322254557] [2021-12-18 06:52:34,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:52:34,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:52:34,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:52:34,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:52:34,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-18 06:52:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:52:35,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 06:52:35,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:52:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2021-12-18 06:52:35,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:52:35,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:52:35,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322254557] [2021-12-18 06:52:35,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322254557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:52:35,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:52:35,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:52:35,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60680938] [2021-12-18 06:52:35,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:52:35,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:52:35,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:52:35,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:52:35,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:52:35,693 INFO L87 Difference]: Start difference. First operand 1122 states and 1664 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-18 06:52:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:52:36,151 INFO L93 Difference]: Finished difference Result 2230 states and 3313 transitions. [2021-12-18 06:52:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 06:52:36,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 221 [2021-12-18 06:52:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:52:36,158 INFO L225 Difference]: With dead ends: 2230 [2021-12-18 06:52:36,158 INFO L226 Difference]: Without dead ends: 1125 [2021-12-18 06:52:36,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:52:36,162 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 6 mSDsluCounter, 6591 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8244 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 06:52:36,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 8244 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 06:52:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-12-18 06:52:36,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1125. [2021-12-18 06:52:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 869 states have (on average 1.4361334867663982) internal successors, (1248), 885 states have internal predecessors, (1248), 212 states have call successors, (212), 43 states have call predecessors, (212), 43 states have return successors, (208), 203 states have call predecessors, (208), 207 states have call successors, (208) [2021-12-18 06:52:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1668 transitions. [2021-12-18 06:52:36,194 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1668 transitions. Word has length 221 [2021-12-18 06:52:36,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:52:36,195 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1668 transitions. [2021-12-18 06:52:36,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-18 06:52:36,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1668 transitions. [2021-12-18 06:52:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-18 06:52:36,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:52:36,198 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:52:36,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-18 06:52:36,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:52:36,420 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:52:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:52:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1060024339, now seen corresponding path program 1 times [2021-12-18 06:52:36,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:52:36,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560033419] [2021-12-18 06:52:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:52:36,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:52:36,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:52:36,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:52:36,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-18 06:52:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:52:37,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 06:52:37,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:52:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-12-18 06:52:37,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 06:52:38,741 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2021-12-18 06:52:38,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:52:38,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560033419] [2021-12-18 06:52:38,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560033419] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 06:52:38,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 06:52:38,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-18 06:52:38,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556078993] [2021-12-18 06:52:38,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 06:52:38,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 06:52:38,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:52:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 06:52:38,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-18 06:52:38,744 INFO L87 Difference]: Start difference. First operand 1125 states and 1668 transitions. Second operand has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 06:52:39,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:52:39,560 INFO L93 Difference]: Finished difference Result 2241 states and 3327 transitions. [2021-12-18 06:52:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 06:52:39,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 228 [2021-12-18 06:52:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:52:39,570 INFO L225 Difference]: With dead ends: 2241 [2021-12-18 06:52:39,570 INFO L226 Difference]: Without dead ends: 1133 [2021-12-18 06:52:39,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-18 06:52:39,580 INFO L933 BasicCegarLoop]: 1655 mSDtfsCounter, 12 mSDsluCounter, 11541 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13196 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 06:52:39,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 13196 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 06:52:39,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-12-18 06:52:39,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1131. [2021-12-18 06:52:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 873 states have (on average 1.4352806414662085) internal successors, (1253), 889 states have internal predecessors, (1253), 213 states have call successors, (213), 44 states have call predecessors, (213), 44 states have return successors, (209), 204 states have call predecessors, (209), 208 states have call successors, (209) [2021-12-18 06:52:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1675 transitions. [2021-12-18 06:52:39,614 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1675 transitions. Word has length 228 [2021-12-18 06:52:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:52:39,615 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 1675 transitions. [2021-12-18 06:52:39,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 06:52:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1675 transitions. [2021-12-18 06:52:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-18 06:52:39,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:52:39,618 INFO L514 BasicCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:52:39,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-18 06:52:39,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:52:39,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:52:39,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:52:39,844 INFO L85 PathProgramCache]: Analyzing trace with hash -383604248, now seen corresponding path program 2 times [2021-12-18 06:52:39,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:52:39,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998141781] [2021-12-18 06:52:39,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 06:52:39,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:52:39,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:52:39,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:52:39,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-18 06:52:40,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 06:52:40,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 06:52:40,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 06:52:40,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:52:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2021-12-18 06:52:40,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:52:40,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:52:40,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998141781] [2021-12-18 06:52:40,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998141781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:52:40,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:52:40,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 06:52:40,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884408] [2021-12-18 06:52:40,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:52:40,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 06:52:40,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:52:40,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 06:52:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:52:40,738 INFO L87 Difference]: Start difference. First operand 1131 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:52:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:52:40,896 INFO L93 Difference]: Finished difference Result 3278 states and 4875 transitions. [2021-12-18 06:52:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 06:52:40,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 235 [2021-12-18 06:52:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:52:40,907 INFO L225 Difference]: With dead ends: 3278 [2021-12-18 06:52:40,907 INFO L226 Difference]: Without dead ends: 2191 [2021-12-18 06:52:40,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:52:40,912 INFO L933 BasicCegarLoop]: 1857 mSDtfsCounter, 1572 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 06:52:40,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 3507 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 06:52:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2021-12-18 06:52:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2184. [2021-12-18 06:52:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 1699 states have (on average 1.4420247204237786) internal successors, (2450), 1726 states have internal predecessors, (2450), 401 states have call successors, (401), 83 states have call predecessors, (401), 83 states have return successors, (397), 388 states have call predecessors, (397), 396 states have call successors, (397) [2021-12-18 06:52:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3248 transitions. [2021-12-18 06:52:40,971 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3248 transitions. Word has length 235 [2021-12-18 06:52:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:52:40,972 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 3248 transitions. [2021-12-18 06:52:40,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:52:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3248 transitions. [2021-12-18 06:52:40,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-12-18 06:52:40,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:52:40,975 INFO L514 BasicCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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 06:52:40,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-18 06:52:41,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:52:41,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:52:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:52:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1527140247, now seen corresponding path program 1 times [2021-12-18 06:52:41,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:52:41,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292981693] [2021-12-18 06:52:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:52:41,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:52:41,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:52:41,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:52:41,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-18 06:52:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:52:42,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 06:52:42,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:52:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 102 proven. 3 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2021-12-18 06:52:42,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 06:52:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-12-18 06:52:43,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:52:43,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292981693] [2021-12-18 06:52:43,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292981693] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 06:52:43,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 06:52:43,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-18 06:52:43,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430242229] [2021-12-18 06:52:43,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 06:52:43,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 06:52:43,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:52:43,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 06:52:43,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-18 06:52:43,760 INFO L87 Difference]: Start difference. First operand 2184 states and 3248 transitions. Second operand has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 13 states have internal predecessors, (71), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 06:52:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:52:44,767 INFO L93 Difference]: Finished difference Result 4368 states and 6498 transitions. [2021-12-18 06:52:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 06:52:44,768 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 13 states have internal predecessors, (71), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 238 [2021-12-18 06:52:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:52:44,782 INFO L225 Difference]: With dead ends: 4368 [2021-12-18 06:52:44,783 INFO L226 Difference]: Without dead ends: 2198 [2021-12-18 06:52:44,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-12-18 06:52:44,791 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 22 mSDsluCounter, 11563 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 13219 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 06:52:44,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 13219 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 06:52:44,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2021-12-18 06:52:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2185. [2021-12-18 06:52:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2185 states, 1700 states have (on average 1.4423529411764706) internal successors, (2452), 1727 states have internal predecessors, (2452), 401 states have call successors, (401), 83 states have call predecessors, (401), 83 states have return successors, (397), 388 states have call predecessors, (397), 396 states have call successors, (397) [2021-12-18 06:52:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 3250 transitions. [2021-12-18 06:52:44,864 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 3250 transitions. Word has length 238 [2021-12-18 06:52:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:52:44,865 INFO L470 AbstractCegarLoop]: Abstraction has 2185 states and 3250 transitions. [2021-12-18 06:52:44,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 13 states have internal predecessors, (71), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 06:52:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 3250 transitions. [2021-12-18 06:52:44,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-18 06:52:44,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:52:44,867 INFO L514 BasicCegarLoop]: trace histogram [21, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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 06:52:44,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-18 06:52:45,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:52:45,091 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:52:45,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:52:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1541225938, now seen corresponding path program 2 times [2021-12-18 06:52:45,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:52:45,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070936599] [2021-12-18 06:52:45,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 06:52:45,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:52:45,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:52:45,094 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:52:45,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-18 06:52:45,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 06:52:45,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 06:52:45,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 06:52:45,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:52:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2021-12-18 06:52:47,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:52:47,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:52:47,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070936599] [2021-12-18 06:52:47,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070936599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:52:47,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:52:47,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 06:52:47,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149551745] [2021-12-18 06:52:47,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:52:47,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 06:52:47,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:52:47,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 06:52:47,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:52:47,008 INFO L87 Difference]: Start difference. First operand 2185 states and 3250 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:52:47,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:52:47,048 INFO L93 Difference]: Finished difference Result 2187 states and 3251 transitions. [2021-12-18 06:52:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 06:52:47,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 245 [2021-12-18 06:52:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:52:47,058 INFO L225 Difference]: With dead ends: 2187 [2021-12-18 06:52:47,058 INFO L226 Difference]: Without dead ends: 2184 [2021-12-18 06:52:47,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:52:47,060 INFO L933 BasicCegarLoop]: 1661 mSDtfsCounter, 1579 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:52:47,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 1661 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 06:52:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2021-12-18 06:52:47,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2184. [2021-12-18 06:52:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 1700 states have (on average 1.4417647058823528) internal successors, (2451), 1726 states have internal predecessors, (2451), 400 states have call successors, (400), 83 states have call predecessors, (400), 83 states have return successors, (397), 388 states have call predecessors, (397), 396 states have call successors, (397) [2021-12-18 06:52:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3248 transitions. [2021-12-18 06:52:47,146 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3248 transitions. Word has length 245 [2021-12-18 06:52:47,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:52:47,151 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 3248 transitions. [2021-12-18 06:52:47,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:52:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3248 transitions. [2021-12-18 06:52:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-12-18 06:52:47,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:52:47,154 INFO L514 BasicCegarLoop]: trace histogram [21, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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 06:52:47,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-18 06:52:47,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:52:47,371 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:52:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:52:47,372 INFO L85 PathProgramCache]: Analyzing trace with hash 533061293, now seen corresponding path program 1 times [2021-12-18 06:52:47,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:52:47,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157972065] [2021-12-18 06:52:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:52:47,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:52:47,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:52:47,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:52:47,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-18 06:52:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:52:48,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 06:52:48,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:52:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 144 proven. 6 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-12-18 06:52:48,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 06:52:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-12-18 06:52:50,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:52:50,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157972065] [2021-12-18 06:52:50,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157972065] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 06:52:50,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 06:52:50,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-18 06:52:50,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685108332] [2021-12-18 06:52:50,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 06:52:50,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 06:52:50,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:52:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 06:52:50,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-18 06:52:50,242 INFO L87 Difference]: Start difference. First operand 2184 states and 3248 transitions. Second operand has 15 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 15 states have internal predecessors, (74), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 06:52:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:52:51,485 INFO L93 Difference]: Finished difference Result 4373 states and 6504 transitions. [2021-12-18 06:52:51,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 06:52:51,487 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 15 states have internal predecessors, (74), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 246 [2021-12-18 06:52:51,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:52:51,497 INFO L225 Difference]: With dead ends: 4373 [2021-12-18 06:52:51,498 INFO L226 Difference]: Without dead ends: 2203 [2021-12-18 06:52:51,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-12-18 06:52:51,507 INFO L933 BasicCegarLoop]: 1655 mSDtfsCounter, 33 mSDsluCounter, 11549 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 13204 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 06:52:51,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 13204 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 06:52:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2021-12-18 06:52:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2185. [2021-12-18 06:52:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2185 states, 1701 states have (on average 1.442092886537331) internal successors, (2453), 1727 states have internal predecessors, (2453), 400 states have call successors, (400), 83 states have call predecessors, (400), 83 states have return successors, (397), 388 states have call predecessors, (397), 396 states have call successors, (397) [2021-12-18 06:52:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 3250 transitions. [2021-12-18 06:52:51,617 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 3250 transitions. Word has length 246 [2021-12-18 06:52:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:52:51,617 INFO L470 AbstractCegarLoop]: Abstraction has 2185 states and 3250 transitions. [2021-12-18 06:52:51,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 15 states have internal predecessors, (74), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 06:52:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 3250 transitions. [2021-12-18 06:52:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-12-18 06:52:51,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:52:51,620 INFO L514 BasicCegarLoop]: trace histogram [28, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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 06:52:51,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-18 06:52:51,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:52:51,835 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:52:51,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:52:51,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1786998248, now seen corresponding path program 2 times [2021-12-18 06:52:51,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:52:51,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606665517] [2021-12-18 06:52:51,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 06:52:51,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:52:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:52:51,837 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:52:51,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-18 06:52:52,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 06:52:52,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 06:52:52,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 06:52:52,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:52:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2021-12-18 06:52:53,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:52:53,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:52:53,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606665517] [2021-12-18 06:52:53,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606665517] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:52:53,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:52:53,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 06:52:53,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395117178] [2021-12-18 06:52:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:52:53,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 06:52:53,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:52:53,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 06:52:53,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:52:53,672 INFO L87 Difference]: Start difference. First operand 2185 states and 3250 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:52:53,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:52:53,708 INFO L93 Difference]: Finished difference Result 2187 states and 3251 transitions. [2021-12-18 06:52:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 06:52:53,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 253 [2021-12-18 06:52:53,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:52:53,717 INFO L225 Difference]: With dead ends: 2187 [2021-12-18 06:52:53,718 INFO L226 Difference]: Without dead ends: 2184 [2021-12-18 06:52:53,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:52:53,719 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1576 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:52:53,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 1659 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 06:52:53,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2021-12-18 06:52:53,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2184. [2021-12-18 06:52:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 1701 states have (on average 1.4415049970605527) internal successors, (2452), 1726 states have internal predecessors, (2452), 399 states have call successors, (399), 83 states have call predecessors, (399), 83 states have return successors, (397), 388 states have call predecessors, (397), 396 states have call successors, (397) [2021-12-18 06:52:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3248 transitions. [2021-12-18 06:52:53,773 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3248 transitions. Word has length 253 [2021-12-18 06:52:53,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:52:53,774 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 3248 transitions. [2021-12-18 06:52:53,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:52:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3248 transitions. [2021-12-18 06:52:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-12-18 06:52:53,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:52:53,776 INFO L514 BasicCegarLoop]: trace histogram [28, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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 06:52:53,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-18 06:52:53,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:52:53,990 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:52:53,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:52:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash -437926822, now seen corresponding path program 1 times [2021-12-18 06:52:53,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:52:53,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678549549] [2021-12-18 06:52:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:52:53,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:52:53,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:52:53,993 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:52:53,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-18 06:52:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:52:54,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 06:52:54,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:52:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 361 proven. 10 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-12-18 06:52:55,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 06:52:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 31 proven. 165 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2021-12-18 06:52:57,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:52:57,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678549549] [2021-12-18 06:52:57,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678549549] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 06:52:57,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 06:52:57,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-12-18 06:52:57,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547939995] [2021-12-18 06:52:57,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 06:52:57,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-18 06:52:57,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:52:57,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-18 06:52:57,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-12-18 06:52:57,452 INFO L87 Difference]: Start difference. First operand 2184 states and 3248 transitions. Second operand has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 06:52:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:52:59,034 INFO L93 Difference]: Finished difference Result 4381 states and 6519 transitions. [2021-12-18 06:52:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 06:52:59,040 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 254 [2021-12-18 06:52:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:52:59,054 INFO L225 Difference]: With dead ends: 4381 [2021-12-18 06:52:59,055 INFO L226 Difference]: Without dead ends: 2214 [2021-12-18 06:52:59,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-12-18 06:52:59,065 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 47 mSDsluCounter, 18127 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 19780 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 06:52:59,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 19780 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 06:52:59,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-12-18 06:52:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2193. [2021-12-18 06:52:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1709 states have (on average 1.4423639555295495) internal successors, (2465), 1734 states have internal predecessors, (2465), 399 states have call successors, (399), 84 states have call predecessors, (399), 84 states have return successors, (398), 388 states have call predecessors, (398), 396 states have call successors, (398) [2021-12-18 06:52:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3262 transitions. [2021-12-18 06:52:59,146 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3262 transitions. Word has length 254 [2021-12-18 06:52:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:52:59,146 INFO L470 AbstractCegarLoop]: Abstraction has 2193 states and 3262 transitions. [2021-12-18 06:52:59,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 06:52:59,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3262 transitions. [2021-12-18 06:52:59,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-12-18 06:52:59,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:52:59,149 INFO L514 BasicCegarLoop]: trace histogram [29, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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 06:52:59,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-18 06:52:59,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:52:59,363 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:52:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:52:59,364 INFO L85 PathProgramCache]: Analyzing trace with hash 707059745, now seen corresponding path program 2 times [2021-12-18 06:52:59,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:52:59,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050801685] [2021-12-18 06:52:59,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 06:52:59,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:52:59,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:52:59,366 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:52:59,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-18 06:52:59,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 06:52:59,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 06:52:59,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 06:52:59,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:53:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2021-12-18 06:53:01,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:53:01,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:53:01,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050801685] [2021-12-18 06:53:01,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050801685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:53:01,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:53:01,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 06:53:01,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759619747] [2021-12-18 06:53:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:53:01,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 06:53:01,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:53:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 06:53:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:53:01,248 INFO L87 Difference]: Start difference. First operand 2193 states and 3262 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:53:01,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:53:01,282 INFO L93 Difference]: Finished difference Result 2195 states and 3263 transitions. [2021-12-18 06:53:01,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 06:53:01,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 255 [2021-12-18 06:53:01,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:53:01,291 INFO L225 Difference]: With dead ends: 2195 [2021-12-18 06:53:01,292 INFO L226 Difference]: Without dead ends: 2192 [2021-12-18 06:53:01,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:53:01,294 INFO L933 BasicCegarLoop]: 1657 mSDtfsCounter, 1573 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:53:01,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 1657 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 06:53:01,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2021-12-18 06:53:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2192. [2021-12-18 06:53:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2192 states, 1709 states have (on average 1.4417788180222353) internal successors, (2464), 1733 states have internal predecessors, (2464), 398 states have call successors, (398), 84 states have call predecessors, (398), 84 states have return successors, (398), 388 states have call predecessors, (398), 396 states have call successors, (398) [2021-12-18 06:53:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 3260 transitions. [2021-12-18 06:53:01,351 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 3260 transitions. Word has length 255 [2021-12-18 06:53:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:53:01,352 INFO L470 AbstractCegarLoop]: Abstraction has 2192 states and 3260 transitions. [2021-12-18 06:53:01,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:53:01,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 3260 transitions. [2021-12-18 06:53:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-12-18 06:53:01,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:53:01,354 INFO L514 BasicCegarLoop]: trace histogram [29, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 1, 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 06:53:01,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-18 06:53:01,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:53:01,569 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:53:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:53:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash 443722820, now seen corresponding path program 1 times [2021-12-18 06:53:01,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:53:01,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647892177] [2021-12-18 06:53:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:53:01,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:53:01,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:53:01,572 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:53:01,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-18 06:53:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:53:02,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1955 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 06:53:02,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:53:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 391 proven. 15 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-12-18 06:53:03,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 06:53:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 36 proven. 195 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2021-12-18 06:53:05,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:53:05,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647892177] [2021-12-18 06:53:05,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647892177] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 06:53:05,232 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 06:53:05,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-18 06:53:05,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647444036] [2021-12-18 06:53:05,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 06:53:05,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 06:53:05,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:53:05,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 06:53:05,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-12-18 06:53:05,234 INFO L87 Difference]: Start difference. First operand 2192 states and 3260 transitions. Second operand has 19 states, 17 states have (on average 4.705882352941177) internal successors, (80), 19 states have internal predecessors, (80), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 06:53:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:53:06,881 INFO L93 Difference]: Finished difference Result 4387 states and 6521 transitions. [2021-12-18 06:53:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 06:53:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.705882352941177) internal successors, (80), 19 states have internal predecessors, (80), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 256 [2021-12-18 06:53:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:53:06,894 INFO L225 Difference]: With dead ends: 4387 [2021-12-18 06:53:06,895 INFO L226 Difference]: Without dead ends: 2219 [2021-12-18 06:53:06,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2021-12-18 06:53:06,903 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 95 mSDsluCounter, 13182 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 14833 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 06:53:06,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 14833 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 06:53:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2021-12-18 06:53:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2193. [2021-12-18 06:53:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1710 states have (on average 1.4421052631578948) internal successors, (2466), 1734 states have internal predecessors, (2466), 398 states have call successors, (398), 84 states have call predecessors, (398), 84 states have return successors, (398), 388 states have call predecessors, (398), 396 states have call successors, (398) [2021-12-18 06:53:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3262 transitions. [2021-12-18 06:53:06,973 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3262 transitions. Word has length 256 [2021-12-18 06:53:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:53:06,973 INFO L470 AbstractCegarLoop]: Abstraction has 2193 states and 3262 transitions. [2021-12-18 06:53:06,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.705882352941177) internal successors, (80), 19 states have internal predecessors, (80), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 06:53:06,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3262 transitions. [2021-12-18 06:53:06,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-18 06:53:06,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:53:06,975 INFO L514 BasicCegarLoop]: trace histogram [30, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 1, 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 06:53:07,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-18 06:53:07,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:53:07,191 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:53:07,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:53:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1264185931, now seen corresponding path program 2 times [2021-12-18 06:53:07,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:53:07,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920552416] [2021-12-18 06:53:07,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 06:53:07,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:53:07,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:53:07,194 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:53:07,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-18 06:53:07,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 06:53:07,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 06:53:07,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 06:53:07,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:53:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2021-12-18 06:53:09,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:53:09,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:53:09,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920552416] [2021-12-18 06:53:09,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920552416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:53:09,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:53:09,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 06:53:09,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910621539] [2021-12-18 06:53:09,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:53:09,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 06:53:09,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:53:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 06:53:09,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:53:09,222 INFO L87 Difference]: Start difference. First operand 2193 states and 3262 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:53:09,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:53:09,306 INFO L93 Difference]: Finished difference Result 4302 states and 6415 transitions. [2021-12-18 06:53:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 06:53:09,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 257 [2021-12-18 06:53:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:53:09,327 INFO L225 Difference]: With dead ends: 4302 [2021-12-18 06:53:09,327 INFO L226 Difference]: Without dead ends: 4291 [2021-12-18 06:53:09,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:53:09,331 INFO L933 BasicCegarLoop]: 1846 mSDtfsCounter, 1546 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 3447 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:53:09,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 3447 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 06:53:09,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2021-12-18 06:53:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 4281. [2021-12-18 06:53:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 3349 states have (on average 1.4458047178262168) internal successors, (4842), 3393 states have internal predecessors, (4842), 771 states have call successors, (771), 162 states have call predecessors, (771), 160 states have return successors, (771), 751 states have call predecessors, (771), 769 states have call successors, (771) [2021-12-18 06:53:09,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 6384 transitions. [2021-12-18 06:53:09,501 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 6384 transitions. Word has length 257 [2021-12-18 06:53:09,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:53:09,502 INFO L470 AbstractCegarLoop]: Abstraction has 4281 states and 6384 transitions. [2021-12-18 06:53:09,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 06:53:09,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 6384 transitions. [2021-12-18 06:53:09,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-12-18 06:53:09,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:53:09,512 INFO L514 BasicCegarLoop]: trace histogram [30, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:53:09,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-18 06:53:09,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:53:09,728 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:53:09,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:53:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash -181957205, now seen corresponding path program 1 times [2021-12-18 06:53:09,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:53:09,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95914988] [2021-12-18 06:53:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:53:09,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:53:09,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:53:09,731 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:53:09,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-18 06:53:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:53:11,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 06:53:11,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:53:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 421 proven. 21 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2021-12-18 06:53:12,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 06:53:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 41 proven. 226 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2021-12-18 06:53:14,823 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:53:14,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95914988] [2021-12-18 06:53:14,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95914988] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 06:53:14,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 06:53:14,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-12-18 06:53:14,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669440422] [2021-12-18 06:53:14,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 06:53:14,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 06:53:14,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:53:14,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 06:53:14,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-12-18 06:53:14,825 INFO L87 Difference]: Start difference. First operand 4281 states and 6384 transitions. Second operand has 21 states, 19 states have (on average 9.526315789473685) internal successors, (181), 21 states have internal predecessors, (181), 4 states have call successors, (47), 2 states have call predecessors, (47), 5 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-18 06:53:16,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:53:16,836 INFO L93 Difference]: Finished difference Result 8612 states and 12831 transitions. [2021-12-18 06:53:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 06:53:16,839 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 9.526315789473685) internal successors, (181), 21 states have internal predecessors, (181), 4 states have call successors, (47), 2 states have call predecessors, (47), 5 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 363 [2021-12-18 06:53:16,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:53:16,864 INFO L225 Difference]: With dead ends: 8612 [2021-12-18 06:53:16,864 INFO L226 Difference]: Without dead ends: 4355 [2021-12-18 06:53:16,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2021-12-18 06:53:16,880 INFO L933 BasicCegarLoop]: 1652 mSDtfsCounter, 101 mSDsluCounter, 16482 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 18134 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-18 06:53:16,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 18134 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-18 06:53:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4355 states. [2021-12-18 06:53:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4355 to 4282. [2021-12-18 06:53:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 3350 states have (on average 1.4459701492537314) internal successors, (4844), 3394 states have internal predecessors, (4844), 771 states have call successors, (771), 162 states have call predecessors, (771), 160 states have return successors, (771), 751 states have call predecessors, (771), 769 states have call successors, (771) [2021-12-18 06:53:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 6386 transitions. [2021-12-18 06:53:17,061 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 6386 transitions. Word has length 363 [2021-12-18 06:53:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:53:17,061 INFO L470 AbstractCegarLoop]: Abstraction has 4282 states and 6386 transitions. [2021-12-18 06:53:17,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 9.526315789473685) internal successors, (181), 21 states have internal predecessors, (181), 4 states have call successors, (47), 2 states have call predecessors, (47), 5 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-18 06:53:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 6386 transitions. [2021-12-18 06:53:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2021-12-18 06:53:17,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:53:17,072 INFO L514 BasicCegarLoop]: trace histogram [31, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:53:17,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-18 06:53:17,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:53:17,288 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:53:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:53:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1640095420, now seen corresponding path program 2 times [2021-12-18 06:53:17,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:53:17,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544467754] [2021-12-18 06:53:17,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 06:53:17,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:53:17,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:53:17,291 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:53:17,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-18 06:53:29,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 06:53:29,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 06:53:29,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 06:53:29,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:53:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 451 proven. 28 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2021-12-18 06:53:30,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 06:53:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 46 proven. 258 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2021-12-18 06:53:33,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:53:33,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544467754] [2021-12-18 06:53:33,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544467754] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 06:53:33,463 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 06:53:33,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-12-18 06:53:33,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725085400] [2021-12-18 06:53:33,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 06:53:33,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-18 06:53:33,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:53:33,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-18 06:53:33,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-12-18 06:53:33,465 INFO L87 Difference]: Start difference. First operand 4282 states and 6386 transitions. Second operand has 23 states, 21 states have (on average 8.714285714285714) internal successors, (183), 23 states have internal predecessors, (183), 4 states have call successors, (47), 2 states have call predecessors, (47), 5 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-18 06:53:35,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:53:35,632 INFO L93 Difference]: Finished difference Result 8625 states and 12849 transitions. [2021-12-18 06:53:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 06:53:35,634 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 8.714285714285714) internal successors, (183), 23 states have internal predecessors, (183), 4 states have call successors, (47), 2 states have call predecessors, (47), 5 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 364 [2021-12-18 06:53:35,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:53:35,648 INFO L225 Difference]: With dead ends: 8625 [2021-12-18 06:53:35,649 INFO L226 Difference]: Without dead ends: 4367 [2021-12-18 06:53:35,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2021-12-18 06:53:35,662 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 134 mSDsluCounter, 19786 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 21439 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-18 06:53:35,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 21439 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-18 06:53:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4367 states. [2021-12-18 06:53:35,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4367 to 4283. [2021-12-18 06:53:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4283 states, 3351 states have (on average 1.4461354819456878) internal successors, (4846), 3395 states have internal predecessors, (4846), 771 states have call successors, (771), 162 states have call predecessors, (771), 160 states have return successors, (771), 751 states have call predecessors, (771), 769 states have call successors, (771) [2021-12-18 06:53:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 6388 transitions. [2021-12-18 06:53:35,798 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 6388 transitions. Word has length 364 [2021-12-18 06:53:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:53:35,799 INFO L470 AbstractCegarLoop]: Abstraction has 4283 states and 6388 transitions. [2021-12-18 06:53:35,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 8.714285714285714) internal successors, (183), 23 states have internal predecessors, (183), 4 states have call successors, (47), 2 states have call predecessors, (47), 5 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-18 06:53:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 6388 transitions. [2021-12-18 06:53:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-12-18 06:53:35,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:53:35,809 INFO L514 BasicCegarLoop]: trace histogram [32, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:53:35,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-18 06:53:36,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:53:36,023 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:53:36,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:53:36,024 INFO L85 PathProgramCache]: Analyzing trace with hash 402260171, now seen corresponding path program 3 times [2021-12-18 06:53:36,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:53:36,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870407917] [2021-12-18 06:53:36,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 06:53:36,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:53:36,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:53:36,028 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:53:36,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-18 06:53:46,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-18 06:53:46,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 06:53:46,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 06:53:46,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:53:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1313 trivial. 0 not checked. [2021-12-18 06:53:47,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:53:47,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:53:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870407917] [2021-12-18 06:53:47,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870407917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:53:47,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:53:47,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 06:53:47,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404322133] [2021-12-18 06:53:47,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:53:47,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 06:53:47,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:53:47,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 06:53:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 06:53:47,228 INFO L87 Difference]: Start difference. First operand 4283 states and 6388 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 06:53:49,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:53:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:53:49,746 INFO L93 Difference]: Finished difference Result 10724 states and 16290 transitions. [2021-12-18 06:53:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 06:53:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 365 [2021-12-18 06:53:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:53:49,769 INFO L225 Difference]: With dead ends: 10724 [2021-12-18 06:53:49,769 INFO L226 Difference]: Without dead ends: 6491 [2021-12-18 06:53:49,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 363 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 06:53:49,784 INFO L933 BasicCegarLoop]: 2197 mSDtfsCounter, 994 mSDsluCounter, 4034 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 6231 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-18 06:53:49,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 6231 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-18 06:53:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6491 states. [2021-12-18 06:53:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6491 to 4291. [2021-12-18 06:53:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4291 states, 3359 states have (on average 1.4450729383745162) internal successors, (4854), 3403 states have internal predecessors, (4854), 771 states have call successors, (771), 162 states have call predecessors, (771), 160 states have return successors, (771), 751 states have call predecessors, (771), 769 states have call successors, (771) [2021-12-18 06:53:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4291 states to 4291 states and 6396 transitions. [2021-12-18 06:53:49,980 INFO L78 Accepts]: Start accepts. Automaton has 4291 states and 6396 transitions. Word has length 365 [2021-12-18 06:53:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:53:49,981 INFO L470 AbstractCegarLoop]: Abstraction has 4291 states and 6396 transitions. [2021-12-18 06:53:49,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 06:53:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4291 states and 6396 transitions. [2021-12-18 06:53:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-12-18 06:53:49,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:53:49,991 INFO L514 BasicCegarLoop]: trace histogram [32, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:53:50,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-18 06:53:50,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:53:50,204 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:53:50,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:53:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1629587087, now seen corresponding path program 1 times [2021-12-18 06:53:50,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:53:50,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686574316] [2021-12-18 06:53:50,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:53:50,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:53:50,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:53:50,207 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:53:50,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-18 06:53:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:53:52,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2925 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 06:53:52,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:53:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1313 trivial. 0 not checked. [2021-12-18 06:53:53,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:53:53,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:53:53,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686574316] [2021-12-18 06:53:53,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686574316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:53:53,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:53:53,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 06:53:53,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008757957] [2021-12-18 06:53:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:53:53,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 06:53:53,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:53:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 06:53:53,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:53:53,304 INFO L87 Difference]: Start difference. First operand 4291 states and 6396 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 06:53:53,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:53:53,879 INFO L93 Difference]: Finished difference Result 8732 states and 13007 transitions. [2021-12-18 06:53:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 06:53:53,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 384 [2021-12-18 06:53:53,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:53:53,891 INFO L225 Difference]: With dead ends: 8732 [2021-12-18 06:53:53,892 INFO L226 Difference]: Without dead ends: 4489 [2021-12-18 06:53:53,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:53:53,903 INFO L933 BasicCegarLoop]: 1676 mSDtfsCounter, 137 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 06:53:53,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 3163 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 06:53:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2021-12-18 06:53:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4467. [2021-12-18 06:53:54,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 3510 states have (on average 1.4413105413105414) internal successors, (5059), 3553 states have internal predecessors, (5059), 789 states have call successors, (789), 170 states have call predecessors, (789), 167 states have return successors, (787), 769 states have call predecessors, (787), 787 states have call successors, (787) [2021-12-18 06:53:54,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6635 transitions. [2021-12-18 06:53:54,050 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6635 transitions. Word has length 384 [2021-12-18 06:53:54,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:53:54,050 INFO L470 AbstractCegarLoop]: Abstraction has 4467 states and 6635 transitions. [2021-12-18 06:53:54,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 06:53:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6635 transitions. [2021-12-18 06:53:54,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-12-18 06:53:54,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:53:54,061 INFO L514 BasicCegarLoop]: trace histogram [32, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:53:54,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-18 06:53:54,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:53:54,288 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:53:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:53:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1844560821, now seen corresponding path program 1 times [2021-12-18 06:53:54,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:53:54,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672927612] [2021-12-18 06:53:54,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:53:54,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:53:54,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:53:54,291 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:53:54,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-18 06:53:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:53:57,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 06:53:57,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:53:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2021-12-18 06:53:57,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:53:57,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:53:57,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672927612] [2021-12-18 06:53:57,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672927612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:53:57,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:53:57,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 06:53:57,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640928981] [2021-12-18 06:53:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:53:57,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 06:53:57,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:53:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 06:53:57,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:53:57,655 INFO L87 Difference]: Start difference. First operand 4467 states and 6635 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:53:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:53:57,825 INFO L93 Difference]: Finished difference Result 11262 states and 17037 transitions. [2021-12-18 06:53:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 06:53:57,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 409 [2021-12-18 06:53:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:53:57,847 INFO L225 Difference]: With dead ends: 11262 [2021-12-18 06:53:57,847 INFO L226 Difference]: Without dead ends: 6873 [2021-12-18 06:53:57,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:53:57,862 INFO L933 BasicCegarLoop]: 2039 mSDtfsCounter, 697 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 3741 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:53:57,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 3741 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 06:53:57,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6873 states. [2021-12-18 06:53:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6873 to 4471. [2021-12-18 06:53:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4471 states, 3514 states have (on average 1.4408081957882755) internal successors, (5063), 3557 states have internal predecessors, (5063), 789 states have call successors, (789), 170 states have call predecessors, (789), 167 states have return successors, (787), 769 states have call predecessors, (787), 787 states have call successors, (787) [2021-12-18 06:53:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4471 states to 4471 states and 6639 transitions. [2021-12-18 06:53:58,041 INFO L78 Accepts]: Start accepts. Automaton has 4471 states and 6639 transitions. Word has length 409 [2021-12-18 06:53:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:53:58,042 INFO L470 AbstractCegarLoop]: Abstraction has 4471 states and 6639 transitions. [2021-12-18 06:53:58,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:53:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4471 states and 6639 transitions. [2021-12-18 06:53:58,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-12-18 06:53:58,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:53:58,052 INFO L514 BasicCegarLoop]: trace histogram [32, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:53:58,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-18 06:53:58,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:53:58,280 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:53:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:53:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1179972948, now seen corresponding path program 1 times [2021-12-18 06:53:58,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:53:58,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421450816] [2021-12-18 06:53:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:53:58,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:53:58,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:53:58,283 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:53:58,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-18 06:54:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:54:01,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 06:54:01,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:54:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2021-12-18 06:54:01,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:54:01,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:54:01,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421450816] [2021-12-18 06:54:01,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421450816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:54:01,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:54:01,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 06:54:01,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829993450] [2021-12-18 06:54:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:54:01,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 06:54:01,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:54:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 06:54:01,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:54:01,644 INFO L87 Difference]: Start difference. First operand 4471 states and 6639 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:54:01,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:54:01,789 INFO L93 Difference]: Finished difference Result 8868 states and 13194 transitions. [2021-12-18 06:54:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 06:54:01,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 411 [2021-12-18 06:54:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:54:01,804 INFO L225 Difference]: With dead ends: 8868 [2021-12-18 06:54:01,804 INFO L226 Difference]: Without dead ends: 4475 [2021-12-18 06:54:01,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:54:01,814 INFO L933 BasicCegarLoop]: 1657 mSDtfsCounter, 0 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:54:01,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3309 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 06:54:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2021-12-18 06:54:01,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4475. [2021-12-18 06:54:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4475 states, 3518 states have (on average 1.4403069926094372) internal successors, (5067), 3561 states have internal predecessors, (5067), 789 states have call successors, (789), 170 states have call predecessors, (789), 167 states have return successors, (787), 769 states have call predecessors, (787), 787 states have call successors, (787) [2021-12-18 06:54:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6643 transitions. [2021-12-18 06:54:01,968 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6643 transitions. Word has length 411 [2021-12-18 06:54:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:54:01,968 INFO L470 AbstractCegarLoop]: Abstraction has 4475 states and 6643 transitions. [2021-12-18 06:54:01,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:54:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6643 transitions. [2021-12-18 06:54:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-12-18 06:54:01,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:54:01,982 INFO L514 BasicCegarLoop]: trace histogram [32, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:54:02,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-18 06:54:02,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:54:02,196 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:54:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:54:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1186062122, now seen corresponding path program 1 times [2021-12-18 06:54:02,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:54:02,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264893059] [2021-12-18 06:54:02,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:54:02,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:54:02,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:54:02,199 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:54:02,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-18 06:54:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:54:05,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-18 06:54:05,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:54:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2021-12-18 06:54:06,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:54:06,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:54:06,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264893059] [2021-12-18 06:54:06,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264893059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:54:06,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:54:06,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 06:54:06,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303642294] [2021-12-18 06:54:06,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:54:06,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 06:54:06,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:54:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 06:54:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-18 06:54:06,724 INFO L87 Difference]: Start difference. First operand 4475 states and 6643 transitions. Second operand has 13 states, 11 states have (on average 14.909090909090908) internal successors, (164), 10 states have internal predecessors, (164), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-18 06:54:10,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:54:10,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:54:10,894 INFO L93 Difference]: Finished difference Result 10884 states and 16448 transitions. [2021-12-18 06:54:10,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 06:54:10,895 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 14.909090909090908) internal successors, (164), 10 states have internal predecessors, (164), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 411 [2021-12-18 06:54:10,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:54:10,913 INFO L225 Difference]: With dead ends: 10884 [2021-12-18 06:54:10,913 INFO L226 Difference]: Without dead ends: 6487 [2021-12-18 06:54:10,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-12-18 06:54:10,922 INFO L933 BasicCegarLoop]: 2095 mSDtfsCounter, 989 mSDsluCounter, 22456 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 152 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 24551 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-18 06:54:10,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 24551 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 167 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-12-18 06:54:10,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6487 states. [2021-12-18 06:54:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6487 to 4491. [2021-12-18 06:54:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 3530 states have (on average 1.4388101983002832) internal successors, (5079), 3573 states have internal predecessors, (5079), 793 states have call successors, (793), 170 states have call predecessors, (793), 167 states have return successors, (791), 773 states have call predecessors, (791), 791 states have call successors, (791) [2021-12-18 06:54:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 6663 transitions. [2021-12-18 06:54:11,077 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 6663 transitions. Word has length 411 [2021-12-18 06:54:11,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:54:11,077 INFO L470 AbstractCegarLoop]: Abstraction has 4491 states and 6663 transitions. [2021-12-18 06:54:11,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 14.909090909090908) internal successors, (164), 10 states have internal predecessors, (164), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-18 06:54:11,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 6663 transitions. [2021-12-18 06:54:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-12-18 06:54:11,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:54:11,120 INFO L514 BasicCegarLoop]: trace histogram [32, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:54:11,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-18 06:54:11,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:54:11,332 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:54:11,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:54:11,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1854334097, now seen corresponding path program 1 times [2021-12-18 06:54:11,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:54:11,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852764990] [2021-12-18 06:54:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:54:11,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:54:11,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:54:11,335 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:54:11,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-18 06:54:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:54:18,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 7935 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-18 06:54:18,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:54:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2021-12-18 06:54:19,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:54:19,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:54:19,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852764990] [2021-12-18 06:54:19,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852764990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:54:19,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:54:19,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 06:54:19,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932262004] [2021-12-18 06:54:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:54:19,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 06:54:19,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:54:19,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 06:54:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:54:19,663 INFO L87 Difference]: Start difference. First operand 4491 states and 6663 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:54:22,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:54:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:54:22,860 INFO L93 Difference]: Finished difference Result 12358 states and 18784 transitions. [2021-12-18 06:54:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 06:54:22,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 417 [2021-12-18 06:54:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:54:22,883 INFO L225 Difference]: With dead ends: 12358 [2021-12-18 06:54:22,884 INFO L226 Difference]: Without dead ends: 7945 [2021-12-18 06:54:22,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-18 06:54:22,897 INFO L933 BasicCegarLoop]: 2137 mSDtfsCounter, 3578 mSDsluCounter, 11411 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 607 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3578 SdHoareTripleChecker+Valid, 13548 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-18 06:54:22,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3578 Valid, 13548 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 43 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-12-18 06:54:22,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7945 states. [2021-12-18 06:54:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7945 to 4519. [2021-12-18 06:54:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4519 states, 3554 states have (on average 1.435846933033202) internal successors, (5103), 3597 states have internal predecessors, (5103), 793 states have call successors, (793), 170 states have call predecessors, (793), 171 states have return successors, (799), 777 states have call predecessors, (799), 791 states have call successors, (799) [2021-12-18 06:54:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 6695 transitions. [2021-12-18 06:54:23,152 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 6695 transitions. Word has length 417 [2021-12-18 06:54:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:54:23,153 INFO L470 AbstractCegarLoop]: Abstraction has 4519 states and 6695 transitions. [2021-12-18 06:54:23,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 06:54:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 6695 transitions. [2021-12-18 06:54:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-12-18 06:54:23,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:54:23,163 INFO L514 BasicCegarLoop]: trace histogram [32, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:54:23,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-18 06:54:23,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:54:23,384 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:54:23,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:54:23,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1456707447, now seen corresponding path program 1 times [2021-12-18 06:54:23,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:54:23,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395933890] [2021-12-18 06:54:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:54:23,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:54:23,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:54:23,387 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:54:23,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-18 06:54:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:54:26,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 3035 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-18 06:54:26,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:54:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2021-12-18 06:54:28,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:54:28,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:54:28,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395933890] [2021-12-18 06:54:28,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395933890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:54:28,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:54:28,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 06:54:28,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882549812] [2021-12-18 06:54:28,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:54:28,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 06:54:28,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:54:28,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 06:54:28,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-18 06:54:28,132 INFO L87 Difference]: Start difference. First operand 4519 states and 6695 transitions. Second operand has 13 states, 11 states have (on average 15.636363636363637) internal successors, (172), 10 states have internal predecessors, (172), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-18 06:54:31,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:54:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:54:32,377 INFO L93 Difference]: Finished difference Result 10972 states and 16552 transitions. [2021-12-18 06:54:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 06:54:32,378 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 15.636363636363637) internal successors, (172), 10 states have internal predecessors, (172), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 421 [2021-12-18 06:54:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:54:32,393 INFO L225 Difference]: With dead ends: 10972 [2021-12-18 06:54:32,393 INFO L226 Difference]: Without dead ends: 6531 [2021-12-18 06:54:32,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-12-18 06:54:32,402 INFO L933 BasicCegarLoop]: 2110 mSDtfsCounter, 982 mSDsluCounter, 22582 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 152 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 24692 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-18 06:54:32,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 24692 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 171 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-12-18 06:54:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6531 states. [2021-12-18 06:54:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6531 to 4519. [2021-12-18 06:54:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4519 states, 3554 states have (on average 1.435846933033202) internal successors, (5103), 3597 states have internal predecessors, (5103), 793 states have call successors, (793), 170 states have call predecessors, (793), 171 states have return successors, (799), 777 states have call predecessors, (799), 791 states have call successors, (799) [2021-12-18 06:54:32,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 6695 transitions. [2021-12-18 06:54:32,606 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 6695 transitions. Word has length 421 [2021-12-18 06:54:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:54:32,607 INFO L470 AbstractCegarLoop]: Abstraction has 4519 states and 6695 transitions. [2021-12-18 06:54:32,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 15.636363636363637) internal successors, (172), 10 states have internal predecessors, (172), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-18 06:54:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 6695 transitions. [2021-12-18 06:54:32,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-12-18 06:54:32,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:54:32,620 INFO L514 BasicCegarLoop]: trace histogram [32, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:32,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-18 06:54:32,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:54:32,848 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:54:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:54:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1439507925, now seen corresponding path program 1 times [2021-12-18 06:54:32,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:54:32,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910228643] [2021-12-18 06:54:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:54:32,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:54:32,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:54:32,851 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:54:32,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-18 06:54:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:54:41,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 7978 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 06:54:41,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:54:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-12-18 06:54:42,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:54:42,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:54:42,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910228643] [2021-12-18 06:54:42,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910228643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:54:42,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:54:42,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 06:54:42,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815690444] [2021-12-18 06:54:42,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:54:42,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 06:54:42,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:54:42,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 06:54:42,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 06:54:42,137 INFO L87 Difference]: Start difference. First operand 4519 states and 6695 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-18 06:54:43,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:54:43,117 INFO L93 Difference]: Finished difference Result 16066 states and 24623 transitions. [2021-12-18 06:54:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 06:54:43,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 437 [2021-12-18 06:54:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:54:43,143 INFO L225 Difference]: With dead ends: 16066 [2021-12-18 06:54:43,144 INFO L226 Difference]: Without dead ends: 11625 [2021-12-18 06:54:43,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 435 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 06:54:43,154 INFO L933 BasicCegarLoop]: 2765 mSDtfsCounter, 2314 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 7274 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 06:54:43,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2534 Valid, 7274 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 06:54:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11625 states. [2021-12-18 06:54:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11625 to 4795. [2021-12-18 06:54:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4795 states, 3770 states have (on average 1.4469496021220158) internal successors, (5455), 3813 states have internal predecessors, (5455), 853 states have call successors, (853), 170 states have call predecessors, (853), 171 states have return successors, (859), 837 states have call predecessors, (859), 851 states have call successors, (859) [2021-12-18 06:54:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4795 states to 4795 states and 7167 transitions. [2021-12-18 06:54:43,461 INFO L78 Accepts]: Start accepts. Automaton has 4795 states and 7167 transitions. Word has length 437 [2021-12-18 06:54:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:54:43,462 INFO L470 AbstractCegarLoop]: Abstraction has 4795 states and 7167 transitions. [2021-12-18 06:54:43,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-18 06:54:43,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4795 states and 7167 transitions. [2021-12-18 06:54:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-12-18 06:54:43,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:54:43,472 INFO L514 BasicCegarLoop]: trace histogram [32, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:43,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-18 06:54:43,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:54:43,699 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:54:43,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:54:43,700 INFO L85 PathProgramCache]: Analyzing trace with hash -684134100, now seen corresponding path program 1 times [2021-12-18 06:54:43,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:54:43,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83556172] [2021-12-18 06:54:43,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:54:43,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:54:43,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:54:43,703 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:54:43,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-18 06:54:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:54:52,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 7997 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 06:54:52,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:54:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-12-18 06:54:52,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:54:52,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:54:52,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83556172] [2021-12-18 06:54:52,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83556172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:54:52,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:54:52,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 06:54:52,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565909380] [2021-12-18 06:54:52,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:54:52,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 06:54:52,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:54:52,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 06:54:52,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:54:52,939 INFO L87 Difference]: Start difference. First operand 4795 states and 7167 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 06:54:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:54:53,303 INFO L93 Difference]: Finished difference Result 9516 states and 14250 transitions. [2021-12-18 06:54:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 06:54:53,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 438 [2021-12-18 06:54:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:54:53,316 INFO L225 Difference]: With dead ends: 9516 [2021-12-18 06:54:53,316 INFO L226 Difference]: Without dead ends: 4799 [2021-12-18 06:54:53,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:54:53,326 INFO L933 BasicCegarLoop]: 1657 mSDtfsCounter, 0 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 06:54:53,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3309 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 06:54:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2021-12-18 06:54:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4799. [2021-12-18 06:54:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4799 states, 3774 states have (on average 1.4464758876523582) internal successors, (5459), 3817 states have internal predecessors, (5459), 853 states have call successors, (853), 170 states have call predecessors, (853), 171 states have return successors, (859), 837 states have call predecessors, (859), 851 states have call successors, (859) [2021-12-18 06:54:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4799 states to 4799 states and 7171 transitions. [2021-12-18 06:54:53,560 INFO L78 Accepts]: Start accepts. Automaton has 4799 states and 7171 transitions. Word has length 438 [2021-12-18 06:54:53,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:54:53,561 INFO L470 AbstractCegarLoop]: Abstraction has 4799 states and 7171 transitions. [2021-12-18 06:54:53,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 06:54:53,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4799 states and 7171 transitions. [2021-12-18 06:54:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-12-18 06:54:53,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:54:53,569 INFO L514 BasicCegarLoop]: trace histogram [32, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:53,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-12-18 06:54:53,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:54:53,795 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:54:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:54:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1224323690, now seen corresponding path program 1 times [2021-12-18 06:54:53,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:54:53,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655831675] [2021-12-18 06:54:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:54:53,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:54:53,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:54:53,798 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:54:53,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-18 06:55:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:55:02,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 8001 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 06:55:02,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:55:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-12-18 06:55:03,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:55:03,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:55:03,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655831675] [2021-12-18 06:55:03,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655831675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:55:03,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:55:03,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 06:55:03,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365556577] [2021-12-18 06:55:03,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:55:03,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 06:55:03,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:55:03,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 06:55:03,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:55:03,419 INFO L87 Difference]: Start difference. First operand 4799 states and 7171 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 06:55:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:55:04,571 INFO L93 Difference]: Finished difference Result 12242 states and 18625 transitions. [2021-12-18 06:55:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 06:55:04,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 438 [2021-12-18 06:55:04,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:55:04,609 INFO L225 Difference]: With dead ends: 12242 [2021-12-18 06:55:04,609 INFO L226 Difference]: Without dead ends: 7521 [2021-12-18 06:55:04,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 06:55:04,620 INFO L933 BasicCegarLoop]: 2294 mSDtfsCounter, 695 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 4023 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 06:55:04,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 4023 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 06:55:04,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7521 states. [2021-12-18 06:55:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7521 to 4939. [2021-12-18 06:55:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 3886 states have (on average 1.4449305198147195) internal successors, (5615), 3929 states have internal predecessors, (5615), 881 states have call successors, (881), 170 states have call predecessors, (881), 171 states have return successors, (891), 865 states have call predecessors, (891), 879 states have call successors, (891) [2021-12-18 06:55:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 7387 transitions. [2021-12-18 06:55:04,868 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 7387 transitions. Word has length 438 [2021-12-18 06:55:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:55:04,868 INFO L470 AbstractCegarLoop]: Abstraction has 4939 states and 7387 transitions. [2021-12-18 06:55:04,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 06:55:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 7387 transitions. [2021-12-18 06:55:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2021-12-18 06:55:04,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:55:04,894 INFO L514 BasicCegarLoop]: trace histogram [32, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:04,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-18 06:55:05,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:55:05,120 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:55:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:55:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2080215853, now seen corresponding path program 1 times [2021-12-18 06:55:05,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:55:05,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521210758] [2021-12-18 06:55:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:55:05,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:55:05,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:55:05,123 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:55:05,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-18 06:55:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:55:14,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 7965 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 06:55:14,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:55:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-12-18 06:55:15,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:55:15,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:55:15,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521210758] [2021-12-18 06:55:15,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521210758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:55:15,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:55:15,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 06:55:15,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501144220] [2021-12-18 06:55:15,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:55:15,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 06:55:15,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:55:15,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 06:55:15,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 06:55:15,133 INFO L87 Difference]: Start difference. First operand 4939 states and 7387 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 06:55:15,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:55:15,588 INFO L93 Difference]: Finished difference Result 12674 states and 19297 transitions. [2021-12-18 06:55:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 06:55:15,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 439 [2021-12-18 06:55:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:55:15,613 INFO L225 Difference]: With dead ends: 12674 [2021-12-18 06:55:15,614 INFO L226 Difference]: Without dead ends: 7813 [2021-12-18 06:55:15,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 436 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 06:55:15,625 INFO L933 BasicCegarLoop]: 2288 mSDtfsCounter, 694 mSDsluCounter, 4017 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 6305 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 06:55:15,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 6305 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 06:55:15,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2021-12-18 06:55:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 5227. [2021-12-18 06:55:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 4118 states have (on average 1.4422049538610977) internal successors, (5939), 4161 states have internal predecessors, (5939), 937 states have call successors, (937), 170 states have call predecessors, (937), 171 states have return successors, (955), 921 states have call predecessors, (955), 935 states have call successors, (955) [2021-12-18 06:55:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 7831 transitions. [2021-12-18 06:55:15,905 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 7831 transitions. Word has length 439 [2021-12-18 06:55:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:55:15,905 INFO L470 AbstractCegarLoop]: Abstraction has 5227 states and 7831 transitions. [2021-12-18 06:55:15,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 06:55:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 7831 transitions. [2021-12-18 06:55:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2021-12-18 06:55:15,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:55:15,912 INFO L514 BasicCegarLoop]: trace histogram [32, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:16,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-18 06:55:16,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:55:16,113 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:55:16,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:55:16,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1707405586, now seen corresponding path program 1 times [2021-12-18 06:55:16,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:55:16,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031605409] [2021-12-18 06:55:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:55:16,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:55:16,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:55:16,116 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:55:16,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-18 06:55:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:55:26,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 7954 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 06:55:26,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:55:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 176 proven. 8 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2021-12-18 06:55:27,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 06:55:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-12-18 06:55:28,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:55:28,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031605409] [2021-12-18 06:55:28,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031605409] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 06:55:28,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 06:55:28,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-18 06:55:28,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209089393] [2021-12-18 06:55:28,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 06:55:28,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:55:28,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:55:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:55:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:55:28,954 INFO L87 Difference]: Start difference. First operand 5227 states and 7831 transitions. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 4 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-12-18 06:55:41,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:55:41,429 INFO L93 Difference]: Finished difference Result 30972 states and 46525 transitions. [2021-12-18 06:55:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 06:55:41,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 4 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 440 [2021-12-18 06:55:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:55:41,505 INFO L225 Difference]: With dead ends: 30972 [2021-12-18 06:55:41,506 INFO L226 Difference]: Without dead ends: 30962 [2021-12-18 06:55:41,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 06:55:41,518 INFO L933 BasicCegarLoop]: 4010 mSDtfsCounter, 9717 mSDsluCounter, 5439 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 1183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9717 SdHoareTripleChecker+Valid, 9449 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1183 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-12-18 06:55:41,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9717 Valid, 9449 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1183 Valid, 2575 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2021-12-18 06:55:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30962 states. [2021-12-18 06:55:43,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30962 to 30885. [2021-12-18 06:55:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30885 states, 24376 states have (on average 1.4475713816869051) internal successors, (35286), 24661 states have internal predecessors, (35286), 5517 states have call successors, (5517), 980 states have call predecessors, (5517), 991 states have return successors, (5635), 5399 states have call predecessors, (5635), 5515 states have call successors, (5635) [2021-12-18 06:55:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30885 states to 30885 states and 46438 transitions. [2021-12-18 06:55:43,124 INFO L78 Accepts]: Start accepts. Automaton has 30885 states and 46438 transitions. Word has length 440 [2021-12-18 06:55:43,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:55:43,124 INFO L470 AbstractCegarLoop]: Abstraction has 30885 states and 46438 transitions. [2021-12-18 06:55:43,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 4 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-12-18 06:55:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 30885 states and 46438 transitions. [2021-12-18 06:55:43,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2021-12-18 06:55:43,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:55:43,160 INFO L514 BasicCegarLoop]: trace histogram [32, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:43,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-12-18 06:55:43,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:55:43,378 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:55:43,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:55:43,378 INFO L85 PathProgramCache]: Analyzing trace with hash 686337232, now seen corresponding path program 1 times [2021-12-18 06:55:43,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:55:43,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33011971] [2021-12-18 06:55:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:55:43,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:55:43,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:55:43,381 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:55:43,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-18 06:55:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:55:53,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 7952 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 06:55:53,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:55:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-12-18 06:55:54,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:55:54,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:55:54,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33011971] [2021-12-18 06:55:54,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33011971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:55:54,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:55:54,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 06:55:54,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990632741] [2021-12-18 06:55:54,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:55:54,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 06:55:54,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:55:54,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 06:55:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 06:55:54,275 INFO L87 Difference]: Start difference. First operand 30885 states and 46438 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-12-18 06:55:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:55:57,571 INFO L93 Difference]: Finished difference Result 80039 states and 120706 transitions. [2021-12-18 06:55:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 06:55:57,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 440 [2021-12-18 06:55:57,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:55:57,765 INFO L225 Difference]: With dead ends: 80039 [2021-12-18 06:55:57,765 INFO L226 Difference]: Without dead ends: 64528 [2021-12-18 06:55:57,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 438 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 06:55:57,815 INFO L933 BasicCegarLoop]: 2138 mSDtfsCounter, 1953 mSDsluCounter, 3491 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 06:55:57,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1953 Valid, 5629 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 06:55:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64528 states. [2021-12-18 06:55:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64528 to 30897. [2021-12-18 06:55:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30897 states, 24388 states have (on average 1.4473511563063801) internal successors, (35298), 24677 states have internal predecessors, (35298), 5517 states have call successors, (5517), 980 states have call predecessors, (5517), 991 states have return successors, (5635), 5395 states have call predecessors, (5635), 5515 states have call successors, (5635) [2021-12-18 06:56:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30897 states to 30897 states and 46450 transitions. [2021-12-18 06:56:00,076 INFO L78 Accepts]: Start accepts. Automaton has 30897 states and 46450 transitions. Word has length 440 [2021-12-18 06:56:00,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:56:00,077 INFO L470 AbstractCegarLoop]: Abstraction has 30897 states and 46450 transitions. [2021-12-18 06:56:00,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-12-18 06:56:00,077 INFO L276 IsEmpty]: Start isEmpty. Operand 30897 states and 46450 transitions. [2021-12-18 06:56:00,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-12-18 06:56:00,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:56:00,111 INFO L514 BasicCegarLoop]: trace histogram [32, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:00,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-18 06:56:00,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:56:00,312 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:56:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:56:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2016519189, now seen corresponding path program 1 times [2021-12-18 06:56:00,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:56:00,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897226522] [2021-12-18 06:56:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:56:00,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:56:00,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:56:00,316 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:56:00,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-18 06:56:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:56:11,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 7948 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 06:56:11,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:56:12,199 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-12-18 06:56:12,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 37 [2021-12-18 06:56:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1496 trivial. 0 not checked. [2021-12-18 06:56:13,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 06:56:13,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 06:56:13,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897226522] [2021-12-18 06:56:13,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897226522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:56:13,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:56:13,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 06:56:13,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757392454] [2021-12-18 06:56:13,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:56:13,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 06:56:13,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 06:56:13,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 06:56:13,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-18 06:56:13,151 INFO L87 Difference]: Start difference. First operand 30897 states and 46450 transitions. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 06:56:16,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:18,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:22,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:24,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:28,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:30,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:32,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:34,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:36,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:40,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:41,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:43,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:49,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:53,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:55,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:57,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:56:59,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:57:02,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:57:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:57:04,130 INFO L93 Difference]: Finished difference Result 61740 states and 92856 transitions. [2021-12-18 06:57:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 06:57:04,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 441 [2021-12-18 06:57:04,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:57:04,209 INFO L225 Difference]: With dead ends: 61740 [2021-12-18 06:57:04,210 INFO L226 Difference]: Without dead ends: 30921 [2021-12-18 06:57:04,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:57:04,261 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 7 mSDsluCounter, 7728 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 9379 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 49.2s IncrementalHoareTripleChecker+Time [2021-12-18 06:57:04,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 9379 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 495 Invalid, 12 Unknown, 15 Unchecked, 49.2s Time] [2021-12-18 06:57:04,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30921 states. [2021-12-18 06:57:05,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30921 to 30921. [2021-12-18 06:57:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30921 states, 24412 states have (on average 1.4469113550712764) internal successors, (35322), 24701 states have internal predecessors, (35322), 5517 states have call successors, (5517), 980 states have call predecessors, (5517), 991 states have return successors, (5635), 5395 states have call predecessors, (5635), 5515 states have call successors, (5635) [2021-12-18 06:57:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30921 states to 30921 states and 46474 transitions. [2021-12-18 06:57:05,997 INFO L78 Accepts]: Start accepts. Automaton has 30921 states and 46474 transitions. Word has length 441 [2021-12-18 06:57:05,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:57:05,997 INFO L470 AbstractCegarLoop]: Abstraction has 30921 states and 46474 transitions. [2021-12-18 06:57:05,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 06:57:05,998 INFO L276 IsEmpty]: Start isEmpty. Operand 30921 states and 46474 transitions. [2021-12-18 06:57:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2021-12-18 06:57:06,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:57:06,032 INFO L514 BasicCegarLoop]: trace histogram [32, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:06,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-18 06:57:06,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 06:57:06,232 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:57:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:57:06,233 INFO L85 PathProgramCache]: Analyzing trace with hash 505132623, now seen corresponding path program 1 times [2021-12-18 06:57:06,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 06:57:06,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884061426] [2021-12-18 06:57:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:57:06,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 06:57:06,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 06:57:06,236 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 06:57:06,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-18 06:59:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:05,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 7954 conjuncts, 176 conjunts are in the unsatisfiable core [2021-12-18 06:59:05,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:59:05,416 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 213494 treesize of output 212982 [2021-12-18 06:59:13,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-18 06:59:13,875 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-12-18 06:59:13,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-18 06:59:14,021 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-12-18 06:59:14,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-18 06:59:14,155 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-18 06:59:14,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-18 06:59:14,612 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 7 treesize of output 3 [2021-12-18 06:59:14,934 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (_ bv0 64) (bvadd |c_#StackHeapBarrier| (_ bv1 64)))) (exists ((v_ArrVal_57139 (Array (_ BitVec 64) (_ BitVec 8)))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_57139)))) is different from true [2021-12-18 06:59:15,166 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (_ bv0 64) (bvadd |c_#StackHeapBarrier| (_ bv1 64)))) (exists ((v_ArrVal_57141 (Array (_ BitVec 64) (_ BitVec 8)))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_57141)))) is different from true [2021-12-18 06:59:15,194 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (_ bv0 64) (bvadd |c_#StackHeapBarrier| (_ bv1 64)))) (exists ((v_ArrVal_57142 (Array (_ BitVec 64) (_ BitVec 8)))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_57142)))) is different from true [2021-12-18 06:59:15,251 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (_ bv0 64) (bvadd |c_#StackHeapBarrier| (_ bv1 64)))) (exists ((v_ArrVal_57142 (Array (_ BitVec 64) (_ BitVec 8)))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ldv_memset_#in~s.base| v_ArrVal_57142)))) is different from true [2021-12-18 06:59:15,312 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 06:59:15,768 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 7 treesize of output 3 [2021-12-18 06:59:15,809 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 06:59:17,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 06:59:17,924 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 06:59:17,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-18 06:59:17,950 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 06:59:18,864 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 06:59:18,864 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 14 treesize of output 14 Killed by 15