./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.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 271771768c3380f5979c29c79a53c5e282857dcb6c4c2b744d0fa4e6e2c0dd66 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 05:18:10,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 05:18:10,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 05:18:10,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 05:18:10,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 05:18:10,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 05:18:10,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 05:18:10,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 05:18:10,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 05:18:10,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 05:18:10,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 05:18:10,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 05:18:10,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 05:18:10,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 05:18:10,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 05:18:10,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 05:18:10,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 05:18:10,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 05:18:10,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 05:18:10,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 05:18:10,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 05:18:10,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 05:18:10,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 05:18:10,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 05:18:10,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 05:18:10,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 05:18:10,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 05:18:10,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 05:18:10,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 05:18:10,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 05:18:10,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 05:18:10,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 05:18:10,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 05:18:10,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 05:18:10,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 05:18:10,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 05:18:10,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 05:18:10,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 05:18:10,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 05:18:10,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 05:18:10,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 05:18:10,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 05:18:10,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 05:18:10,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 05:18:10,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 05:18:10,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 05:18:10,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 05:18:10,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 05:18:10,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 05:18:10,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 05:18:10,708 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 05:18:10,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 05:18:10,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 05:18:10,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 05:18:10,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 05:18:10,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 05:18:10,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 05:18:10,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 05:18:10,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 05:18:10,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 05:18:10,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 05:18:10,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 05:18:10,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 05:18:10,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 05:18:10,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 05:18:10,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 05:18:10,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 05:18:10,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 05:18:10,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 05:18:10,709 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 05:18:10,709 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 05:18:10,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 05:18:10,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 05:18:10,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 271771768c3380f5979c29c79a53c5e282857dcb6c4c2b744d0fa4e6e2c0dd66 [2021-12-18 05:18:10,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 05:18:10,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 05:18:10,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 05:18:10,923 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 05:18:10,924 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 05:18:10,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-18 05:18:10,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcfffe39/1de8da43da1546a196b4f0ead0f71079/FLAG66224c48e [2021-12-18 05:18:11,555 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 05:18:11,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-18 05:18:11,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcfffe39/1de8da43da1546a196b4f0ead0f71079/FLAG66224c48e [2021-12-18 05:18:11,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcfffe39/1de8da43da1546a196b4f0ead0f71079 [2021-12-18 05:18:12,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 05:18:12,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 05:18:12,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 05:18:12,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 05:18:12,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 05:18:12,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:18:12" (1/1) ... [2021-12-18 05:18:12,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b72dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:12, skipping insertion in model container [2021-12-18 05:18:12,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:18:12" (1/1) ... [2021-12-18 05:18:12,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 05:18:12,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 05:18:12,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i[185985,185998] [2021-12-18 05:18:13,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 05:18:13,026 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 05:18:13,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i[185985,185998] [2021-12-18 05:18:13,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 05:18:13,346 INFO L208 MainTranslator]: Completed translation [2021-12-18 05:18:13,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13 WrapperNode [2021-12-18 05:18:13,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 05:18:13,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 05:18:13,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 05:18:13,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 05:18:13,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (1/1) ... [2021-12-18 05:18:13,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (1/1) ... [2021-12-18 05:18:13,501 INFO L137 Inliner]: procedures = 159, calls = 1227, calls flagged for inlining = 70, calls inlined = 70, statements flattened = 3009 [2021-12-18 05:18:13,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 05:18:13,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 05:18:13,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 05:18:13,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 05:18:13,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (1/1) ... [2021-12-18 05:18:13,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (1/1) ... [2021-12-18 05:18:13,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (1/1) ... [2021-12-18 05:18:13,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (1/1) ... [2021-12-18 05:18:13,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (1/1) ... [2021-12-18 05:18:13,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (1/1) ... [2021-12-18 05:18:13,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (1/1) ... [2021-12-18 05:18:13,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 05:18:13,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 05:18:13,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 05:18:13,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 05:18:13,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (1/1) ... [2021-12-18 05:18:13,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 05:18:13,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:18:13,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 05:18:13,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 05:18:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_radio_text [2021-12-18 05:18:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_radio_text [2021-12-18 05:18:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 05:18:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 05:18:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 05:18:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 05:18:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 05:18:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 05:18:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 05:18:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 05:18:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2021-12-18 05:18:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2021-12-18 05:18:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_wait_stc [2021-12-18 05:18:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_wait_stc [2021-12-18 05:18:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_usecs [2021-12-18 05:18:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_usecs [2021-12-18 05:18:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_mute [2021-12-18 05:18:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_mute [2021-12-18 05:18:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 05:18:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 05:18:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-12-18 05:18:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-12-18 05:18:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 05:18:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 05:18:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_power_state [2021-12-18 05:18:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_power_state [2021-12-18 05:18:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_choose_econtrol_action [2021-12-18 05:18:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_choose_econtrol_action [2021-12-18 05:18:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2021-12-18 05:18:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2021-12-18 05:18:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 05:18:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 05:18:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-18 05:18:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-18 05:18:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_tune [2021-12-18 05:18:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_tune [2021-12-18 05:18:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 05:18:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 05:18:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 05:18:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-18 05:18:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-18 05:18:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-18 05:18:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-18 05:18:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 05:18:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 05:18:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2021-12-18 05:18:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2021-12-18 05:18:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-12-18 05:18:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-12-18 05:18:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 05:18:13,816 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 05:18:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_rds_buff [2021-12-18 05:18:13,816 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_rds_buff [2021-12-18 05:18:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 05:18:13,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 05:18:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 05:18:13,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 05:18:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 05:18:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_query_fill [2021-12-18 05:18:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_query_fill [2021-12-18 05:18:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure validate_range [2021-12-18 05:18:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_range [2021-12-18 05:18:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_free [2021-12-18 05:18:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_free [2021-12-18 05:18:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_integers [2021-12-18 05:18:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_integers [2021-12-18 05:18:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 05:18:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-18 05:18:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-18 05:18:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 05:18:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-12-18 05:18:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-12-18 05:18:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 05:18:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-18 05:18:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-18 05:18:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-18 05:18:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-18 05:18:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_send_command [2021-12-18 05:18:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_send_command [2021-12-18 05:18:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-12-18 05:18:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-12-18 05:18:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure usecs_to_jiffies [2021-12-18 05:18:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure usecs_to_jiffies [2021-12-18 05:18:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_property [2021-12-18 05:18:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_property [2021-12-18 05:18:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 05:18:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-18 05:18:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-18 05:18:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 05:18:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 05:18:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_read_property [2021-12-18 05:18:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_read_property [2021-12-18 05:18:13,821 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-18 05:18:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-18 05:18:13,821 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_frequency [2021-12-18 05:18:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_frequency [2021-12-18 05:18:13,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2021-12-18 05:18:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2021-12-18 05:18:13,821 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 05:18:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 05:18:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-18 05:18:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-18 05:18:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 05:18:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_tune_status [2021-12-18 05:18:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_tune_status [2021-12-18 05:18:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2021-12-18 05:18:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2021-12-18 05:18:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_update_tune_status [2021-12-18 05:18:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_update_tune_status [2021-12-18 05:18:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_ps_name [2021-12-18 05:18:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_ps_name [2021-12-18 05:18:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_queryctrl [2021-12-18 05:18:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_queryctrl [2021-12-18 05:18:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_modulator [2021-12-18 05:18:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_modulator [2021-12-18 05:18:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 05:18:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-18 05:18:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 05:18:13,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 05:18:14,250 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 05:18:14,253 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 05:18:14,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 05:18:17,326 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 05:18:17,344 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 05:18:17,345 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 05:18:17,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:18:17 BoogieIcfgContainer [2021-12-18 05:18:17,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 05:18:17,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 05:18:17,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 05:18:17,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 05:18:17,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 05:18:12" (1/3) ... [2021-12-18 05:18:17,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c18daf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:18:17, skipping insertion in model container [2021-12-18 05:18:17,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:13" (2/3) ... [2021-12-18 05:18:17,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c18daf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:18:17, skipping insertion in model container [2021-12-18 05:18:17,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:18:17" (3/3) ... [2021-12-18 05:18:17,359 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-18 05:18:17,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 05:18:17,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 05:18:17,409 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 05:18:17,414 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 05:18:17,415 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 05:18:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 1039 states, 770 states have (on average 1.4025974025974026) internal successors, (1080), 786 states have internal predecessors, (1080), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (209), 209 states have call predecessors, (209), 209 states have call successors, (209) [2021-12-18 05:18:17,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-18 05:18:17,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:18:17,468 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:18:17,469 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:18:17,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:18:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1529596494, now seen corresponding path program 1 times [2021-12-18 05:18:17,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:18:17,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348940132] [2021-12-18 05:18:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:18:17,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:18:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:18:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:18:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:18:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:17,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 05:18:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 05:18:18,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:18:18,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348940132] [2021-12-18 05:18:18,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348940132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:18:18,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:18:18,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 05:18:18,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145845059] [2021-12-18 05:18:18,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:18:18,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 05:18:18,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:18:18,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 05:18:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 05:18:18,047 INFO L87 Difference]: Start difference. First operand has 1039 states, 770 states have (on average 1.4025974025974026) internal successors, (1080), 786 states have internal predecessors, (1080), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (209), 209 states have call predecessors, (209), 209 states have call successors, (209) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 05:18:21,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:23,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:18:23,516 INFO L93 Difference]: Finished difference Result 2153 states and 3163 transitions. [2021-12-18 05:18:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 05:18:23,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2021-12-18 05:18:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:18:23,541 INFO L225 Difference]: With dead ends: 2153 [2021-12-18 05:18:23,541 INFO L226 Difference]: Without dead ends: 1101 [2021-12-18 05:18:23,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 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 05:18:23,551 INFO L933 BasicCegarLoop]: 1407 mSDtfsCounter, 602 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-18 05:18:23,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 2732 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-18 05:18:23,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2021-12-18 05:18:23,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1022. [2021-12-18 05:18:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 762 states have (on average 1.3910761154855642) internal successors, (1060), 769 states have internal predecessors, (1060), 209 states have call successors, (209), 50 states have call predecessors, (209), 50 states have return successors, (209), 209 states have call predecessors, (209), 209 states have call successors, (209) [2021-12-18 05:18:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1478 transitions. [2021-12-18 05:18:23,663 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1478 transitions. Word has length 94 [2021-12-18 05:18:23,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:18:23,664 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 1478 transitions. [2021-12-18 05:18:23,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 05:18:23,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1478 transitions. [2021-12-18 05:18:23,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-18 05:18:23,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:18:23,670 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:18:23,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 05:18:23,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:18:23,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:18:23,671 INFO L85 PathProgramCache]: Analyzing trace with hash -390287148, now seen corresponding path program 1 times [2021-12-18 05:18:23,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:18:23,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076798236] [2021-12-18 05:18:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:18:23,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:18:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:18:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:18:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:18:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 05:18:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 05:18:23,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:18:23,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076798236] [2021-12-18 05:18:23,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076798236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:18:23,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:18:23,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 05:18:23,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519090483] [2021-12-18 05:18:23,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:18:23,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:18:23,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:18:23,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:18:23,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:18:23,841 INFO L87 Difference]: Start difference. First operand 1022 states and 1478 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 05:18:26,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:28,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:18:28,182 INFO L93 Difference]: Finished difference Result 2609 states and 3766 transitions. [2021-12-18 05:18:28,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:18:28,182 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), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2021-12-18 05:18:28,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:18:28,190 INFO L225 Difference]: With dead ends: 2609 [2021-12-18 05:18:28,190 INFO L226 Difference]: Without dead ends: 1599 [2021-12-18 05:18:28,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 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 05:18:28,200 INFO L933 BasicCegarLoop]: 1468 mSDtfsCounter, 1453 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 3960 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:18:28,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 3960 Invalid, 2130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-18 05:18:28,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-12-18 05:18:28,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1469. [2021-12-18 05:18:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1102 states have (on average 1.382032667876588) internal successors, (1523), 1114 states have internal predecessors, (1523), 286 states have call successors, (286), 80 states have call predecessors, (286), 80 states have return successors, (286), 285 states have call predecessors, (286), 286 states have call successors, (286) [2021-12-18 05:18:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2095 transitions. [2021-12-18 05:18:28,253 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2095 transitions. Word has length 94 [2021-12-18 05:18:28,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:18:28,254 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 2095 transitions. [2021-12-18 05:18:28,254 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), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 05:18:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2095 transitions. [2021-12-18 05:18:28,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-18 05:18:28,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:18:28,261 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-12-18 05:18:28,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 05:18:28,262 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:18:28,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:18:28,262 INFO L85 PathProgramCache]: Analyzing trace with hash 606339028, now seen corresponding path program 1 times [2021-12-18 05:18:28,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:18:28,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951094614] [2021-12-18 05:18:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:18:28,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:18:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:18:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:18:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:18:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:18:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:18:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:18:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:18:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:18:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:18:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:18:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 05:18:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-12-18 05:18:28,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:18:28,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951094614] [2021-12-18 05:18:28,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951094614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:18:28,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:18:28,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 05:18:28,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058258369] [2021-12-18 05:18:28,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:18:28,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 05:18:28,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:18:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 05:18:28,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-18 05:18:28,743 INFO L87 Difference]: Start difference. First operand 1469 states and 2095 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:18:32,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:37,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:18:44,219 INFO L93 Difference]: Finished difference Result 3783 states and 5392 transitions. [2021-12-18 05:18:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 05:18:44,223 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) Word has length 222 [2021-12-18 05:18:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:18:44,234 INFO L225 Difference]: With dead ends: 3783 [2021-12-18 05:18:44,234 INFO L226 Difference]: Without dead ends: 2330 [2021-12-18 05:18:44,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-12-18 05:18:44,240 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 1299 mSDsluCounter, 8680 mSDsCounter, 0 mSdLazyCounter, 6959 mSolverCounterSat, 825 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 10311 SdHoareTripleChecker+Invalid, 7785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 6959 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-12-18 05:18:44,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 10311 Invalid, 7785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [825 Valid, 6959 Invalid, 1 Unknown, 0 Unchecked, 15.1s Time] [2021-12-18 05:18:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2021-12-18 05:18:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2186. [2021-12-18 05:18:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 1639 states have (on average 1.3746186699206833) internal successors, (2253), 1666 states have internal predecessors, (2253), 404 states have call successors, (404), 132 states have call predecessors, (404), 142 states have return successors, (457), 398 states have call predecessors, (457), 404 states have call successors, (457) [2021-12-18 05:18:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 3114 transitions. [2021-12-18 05:18:44,310 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 3114 transitions. Word has length 222 [2021-12-18 05:18:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:18:44,312 INFO L470 AbstractCegarLoop]: Abstraction has 2186 states and 3114 transitions. [2021-12-18 05:18:44,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:18:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 3114 transitions. [2021-12-18 05:18:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-18 05:18:44,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:18:44,320 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:18:44,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 05:18:44,323 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:18:44,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:18:44,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2079558733, now seen corresponding path program 1 times [2021-12-18 05:18:44,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:18:44,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259732735] [2021-12-18 05:18:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:18:44,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:18:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:18:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:18:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:18:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:18:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:18:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:18:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:18:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:18:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:18:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:18:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 05:18:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-18 05:18:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 05:18:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2021-12-18 05:18:44,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:18:44,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259732735] [2021-12-18 05:18:44,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259732735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:18:44,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:18:44,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 05:18:44,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341478182] [2021-12-18 05:18:44,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:18:44,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 05:18:44,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:18:44,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 05:18:44,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:18:44,727 INFO L87 Difference]: Start difference. First operand 2186 states and 3114 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 05:18:46,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:49,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:18:50,641 INFO L93 Difference]: Finished difference Result 2307 states and 3282 transitions. [2021-12-18 05:18:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:18:50,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 244 [2021-12-18 05:18:50,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:18:50,655 INFO L225 Difference]: With dead ends: 2307 [2021-12-18 05:18:50,655 INFO L226 Difference]: Without dead ends: 2305 [2021-12-18 05:18:50,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-18 05:18:50,661 INFO L933 BasicCegarLoop]: 1390 mSDtfsCounter, 608 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 550 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 5071 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-18 05:18:50,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 5071 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1470 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-12-18 05:18:50,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2021-12-18 05:18:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2190. [2021-12-18 05:18:50,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 1642 states have (on average 1.3733252131546894) internal successors, (2255), 1669 states have internal predecessors, (2255), 404 states have call successors, (404), 133 states have call predecessors, (404), 143 states have return successors, (457), 398 states have call predecessors, (457), 404 states have call successors, (457) [2021-12-18 05:18:50,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 3116 transitions. [2021-12-18 05:18:50,728 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 3116 transitions. Word has length 244 [2021-12-18 05:18:50,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:18:50,729 INFO L470 AbstractCegarLoop]: Abstraction has 2190 states and 3116 transitions. [2021-12-18 05:18:50,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-18 05:18:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 3116 transitions. [2021-12-18 05:18:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-12-18 05:18:50,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:18:50,737 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-12-18 05:18:50,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 05:18:50,738 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:18:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:18:50,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1521878376, now seen corresponding path program 1 times [2021-12-18 05:18:50,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:18:50,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109225432] [2021-12-18 05:18:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:18:50,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:18:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:50,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:50,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:50,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:18:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:18:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:18:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:18:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:18:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:18:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:18:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:18:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:18:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:18:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:18:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:18:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 05:18:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 05:18:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-18 05:18:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:18:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:18:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-12-18 05:18:51,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:18:51,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109225432] [2021-12-18 05:18:51,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109225432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:18:51,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:18:51,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 05:18:51,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514352775] [2021-12-18 05:18:51,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:18:51,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 05:18:51,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:18:51,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 05:18:51,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-18 05:18:51,309 INFO L87 Difference]: Start difference. First operand 2190 states and 3116 transitions. Second operand has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:18:55,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:57,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:18:59,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:01,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:06,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:11,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:13,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:19:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:19:15,059 INFO L93 Difference]: Finished difference Result 5010 states and 7233 transitions. [2021-12-18 05:19:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 05:19:15,060 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 243 [2021-12-18 05:19:15,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:19:15,071 INFO L225 Difference]: With dead ends: 5010 [2021-12-18 05:19:15,071 INFO L226 Difference]: Without dead ends: 2836 [2021-12-18 05:19:15,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-12-18 05:19:15,080 INFO L933 BasicCegarLoop]: 1769 mSDtfsCounter, 1240 mSDsluCounter, 6956 mSDsCounter, 0 mSdLazyCounter, 4502 mSolverCounterSat, 847 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 8725 SdHoareTripleChecker+Invalid, 5354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 4502 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2021-12-18 05:19:15,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 8725 Invalid, 5354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 4502 Invalid, 5 Unknown, 0 Unchecked, 23.4s Time] [2021-12-18 05:19:15,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2021-12-18 05:19:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2196. [2021-12-18 05:19:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 1647 states have (on average 1.3727990285367335) internal successors, (2261), 1674 states have internal predecessors, (2261), 404 states have call successors, (404), 133 states have call predecessors, (404), 144 states have return successors, (460), 399 states have call predecessors, (460), 404 states have call successors, (460) [2021-12-18 05:19:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3125 transitions. [2021-12-18 05:19:15,147 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3125 transitions. Word has length 243 [2021-12-18 05:19:15,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:19:15,147 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 3125 transitions. [2021-12-18 05:19:15,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:19:15,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3125 transitions. [2021-12-18 05:19:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-18 05:19:15,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:19:15,154 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-12-18 05:19:15,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 05:19:15,155 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:19:15,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:19:15,155 INFO L85 PathProgramCache]: Analyzing trace with hash 891996621, now seen corresponding path program 1 times [2021-12-18 05:19:15,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:19:15,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172750394] [2021-12-18 05:19:15,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:19:15,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:19:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:19:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:19:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:19:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:19:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:19:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:19:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:19:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:19:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:19:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:19:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:19:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:19:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:19:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:19:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:19:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:19:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:19:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:19:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:19:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:19:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:19:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:19:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 05:19:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 05:19:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-18 05:19:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:19:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 107 proven. 20 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2021-12-18 05:19:15,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:19:15,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172750394] [2021-12-18 05:19:15,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172750394] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:19:15,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770472727] [2021-12-18 05:19:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:19:15,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:19:15,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:19:15,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:19:16,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 05:19:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:19:16,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-18 05:19:16,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:19:16,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 05:19:17,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:19:17,137 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 05:19:17,164 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 05:19:17,213 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 05:19:17,213 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 05:19:17,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:19:17,270 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 05:19:17,295 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 05:19:17,344 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 05:19:17,344 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 05:19:17,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:19:17,404 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 05:19:17,426 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 05:19:17,470 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 05:19:17,470 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 05:19:17,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:19:17,509 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 7 treesize of output 6 [2021-12-18 05:19:17,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:19:31,746 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 05:19:31,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 05:19:31,859 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 13 treesize of output 15 [2021-12-18 05:19:31,957 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 13 treesize of output 15 [2021-12-18 05:19:32,100 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 16 treesize of output 12 [2021-12-18 05:19:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 263 proven. 72 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-12-18 05:19:32,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 05:20:21,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770472727] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:20:21,955 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 05:20:21,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 40 [2021-12-18 05:20:21,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115272705] [2021-12-18 05:20:21,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 05:20:21,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-18 05:20:21,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:20:21,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-18 05:20:21,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1732, Unknown=30, NotChecked=0, Total=1892 [2021-12-18 05:20:21,957 INFO L87 Difference]: Start difference. First operand 2196 states and 3125 transitions. Second operand has 40 states, 39 states have (on average 4.333333333333333) internal successors, (169), 30 states have internal predecessors, (169), 16 states have call successors, (44), 9 states have call predecessors, (44), 11 states have return successors, (36), 21 states have call predecessors, (36), 16 states have call successors, (36) [2021-12-18 05:20:43,260 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 05:20:44,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:45,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:47,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:48,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:49,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:51,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:52,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:54,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:56,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:20:58,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:00,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:01,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:03,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:05,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:46,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:48,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:50,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:53,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:21:58,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:01,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:03,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:22:13,522 INFO L93 Difference]: Finished difference Result 7633 states and 11402 transitions. [2021-12-18 05:22:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-18 05:22:13,523 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.333333333333333) internal successors, (169), 30 states have internal predecessors, (169), 16 states have call successors, (44), 9 states have call predecessors, (44), 11 states have return successors, (36), 21 states have call predecessors, (36), 16 states have call successors, (36) Word has length 244 [2021-12-18 05:22:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:22:13,546 INFO L225 Difference]: With dead ends: 7633 [2021-12-18 05:22:13,546 INFO L226 Difference]: Without dead ends: 5453 [2021-12-18 05:22:13,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 336 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 83.8s TimeCoverageRelationStatistics Valid=507, Invalid=5154, Unknown=39, NotChecked=0, Total=5700 [2021-12-18 05:22:13,555 INFO L933 BasicCegarLoop]: 3450 mSDtfsCounter, 5775 mSDsluCounter, 64786 mSDsCounter, 0 mSdLazyCounter, 35014 mSolverCounterSat, 3962 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5905 SdHoareTripleChecker+Valid, 68236 SdHoareTripleChecker+Invalid, 45264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3962 IncrementalHoareTripleChecker+Valid, 35014 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 6280 IncrementalHoareTripleChecker+Unchecked, 91.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:22:13,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5905 Valid, 68236 Invalid, 45264 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3962 Valid, 35014 Invalid, 8 Unknown, 6280 Unchecked, 91.2s Time] [2021-12-18 05:22:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2021-12-18 05:22:13,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 2834. [2021-12-18 05:22:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2834 states, 2141 states have (on average 1.3750583839327417) internal successors, (2944), 2172 states have internal predecessors, (2944), 499 states have call successors, (499), 182 states have call predecessors, (499), 193 states have return successors, (569), 490 states have call predecessors, (569), 499 states have call successors, (569) [2021-12-18 05:22:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 4012 transitions. [2021-12-18 05:22:13,706 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 4012 transitions. Word has length 244 [2021-12-18 05:22:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:22:13,706 INFO L470 AbstractCegarLoop]: Abstraction has 2834 states and 4012 transitions. [2021-12-18 05:22:13,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.333333333333333) internal successors, (169), 30 states have internal predecessors, (169), 16 states have call successors, (44), 9 states have call predecessors, (44), 11 states have return successors, (36), 21 states have call predecessors, (36), 16 states have call successors, (36) [2021-12-18 05:22:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 4012 transitions. [2021-12-18 05:22:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-18 05:22:13,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:22:13,716 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 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] [2021-12-18 05:22:13,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 05:22:13,935 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,SelfDestructingSolverStorable5 [2021-12-18 05:22:13,936 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:22:13,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:22:13,936 INFO L85 PathProgramCache]: Analyzing trace with hash 871349858, now seen corresponding path program 1 times [2021-12-18 05:22:13,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:22:13,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68969479] [2021-12-18 05:22:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:22:13,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:22:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:22:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:22:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:22:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:22:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:22:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:22:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:22:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:22:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:22:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:22:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:22:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 05:22:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 05:22:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 05:22:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:22:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 71 proven. 58 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2021-12-18 05:22:14,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:22:14,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68969479] [2021-12-18 05:22:14,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68969479] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:22:14,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743500109] [2021-12-18 05:22:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:22:14,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:22:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:22:14,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:22:14,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 05:22:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:15,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-18 05:22:15,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:22:15,494 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 05:22:15,495 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 15 treesize of output 15 [2021-12-18 05:22:15,505 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 9 treesize of output 3 [2021-12-18 05:22:15,763 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 05:22:15,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2021-12-18 05:22:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2021-12-18 05:22:15,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 05:22:15,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743500109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:22:15,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 05:22:15,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2021-12-18 05:22:15,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005276215] [2021-12-18 05:22:15,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:22:15,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 05:22:15,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:22:15,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 05:22:15,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-18 05:22:15,822 INFO L87 Difference]: Start difference. First operand 2834 states and 4012 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 9 states have internal predecessors, (86), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:22:17,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:19,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:22,901 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:24,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:22:24,318 INFO L93 Difference]: Finished difference Result 6914 states and 10005 transitions. [2021-12-18 05:22:24,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 05:22:24,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 9 states have internal predecessors, (86), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 245 [2021-12-18 05:22:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:22:24,337 INFO L225 Difference]: With dead ends: 6914 [2021-12-18 05:22:24,338 INFO L226 Difference]: Without dead ends: 4096 [2021-12-18 05:22:24,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 304 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2021-12-18 05:22:24,349 INFO L933 BasicCegarLoop]: 2126 mSDtfsCounter, 469 mSDsluCounter, 10908 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 13034 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 637 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:22:24,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 13034 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 707 Invalid, 1 Unknown, 637 Unchecked, 8.2s Time] [2021-12-18 05:22:24,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4096 states. [2021-12-18 05:22:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4096 to 2844. [2021-12-18 05:22:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2148 states have (on average 1.3738361266294228) internal successors, (2951), 2179 states have internal predecessors, (2951), 499 states have call successors, (499), 185 states have call predecessors, (499), 196 states have return successors, (569), 490 states have call predecessors, (569), 499 states have call successors, (569) [2021-12-18 05:22:24,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4019 transitions. [2021-12-18 05:22:24,474 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4019 transitions. Word has length 245 [2021-12-18 05:22:24,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:22:24,474 INFO L470 AbstractCegarLoop]: Abstraction has 2844 states and 4019 transitions. [2021-12-18 05:22:24,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 9 states have internal predecessors, (86), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:22:24,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4019 transitions. [2021-12-18 05:22:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-18 05:22:24,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:22:24,485 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 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] [2021-12-18 05:22:24,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-18 05:22:24,723 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,SelfDestructingSolverStorable6 [2021-12-18 05:22:24,724 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:22:24,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:22:24,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1785717740, now seen corresponding path program 1 times [2021-12-18 05:22:24,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:22:24,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641635023] [2021-12-18 05:22:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:22:24,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:22:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:22:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:22:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:22:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:22:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:22:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:22:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:22:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:22:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:22:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:22:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:22:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 05:22:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 05:22:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 05:22:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 05:22:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2021-12-18 05:22:25,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:22:25,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641635023] [2021-12-18 05:22:25,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641635023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:22:25,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:22:25,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 05:22:25,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835626020] [2021-12-18 05:22:25,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:22:25,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 05:22:25,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:22:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 05:22:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-18 05:22:25,187 INFO L87 Difference]: Start difference. First operand 2844 states and 4019 transitions. Second operand has 12 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:22:28,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:30,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:32,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:34,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:45,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:48,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:49,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:51,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:53,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:22:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:22:53,583 INFO L93 Difference]: Finished difference Result 6354 states and 9086 transitions. [2021-12-18 05:22:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 05:22:53,584 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 245 [2021-12-18 05:22:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:22:53,598 INFO L225 Difference]: With dead ends: 6354 [2021-12-18 05:22:53,599 INFO L226 Difference]: Without dead ends: 3526 [2021-12-18 05:22:53,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-12-18 05:22:53,606 INFO L933 BasicCegarLoop]: 1736 mSDtfsCounter, 1028 mSDsluCounter, 10037 mSDsCounter, 0 mSdLazyCounter, 6163 mSolverCounterSat, 747 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 11773 SdHoareTripleChecker+Invalid, 6913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 6163 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2021-12-18 05:22:53,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1094 Valid, 11773 Invalid, 6913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 6163 Invalid, 3 Unknown, 0 Unchecked, 28.1s Time] [2021-12-18 05:22:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2021-12-18 05:22:53,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 2850. [2021-12-18 05:22:53,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2153 states have (on average 1.3734324198792383) internal successors, (2957), 2184 states have internal predecessors, (2957), 499 states have call successors, (499), 185 states have call predecessors, (499), 197 states have return successors, (572), 491 states have call predecessors, (572), 499 states have call successors, (572) [2021-12-18 05:22:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 4028 transitions. [2021-12-18 05:22:53,779 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 4028 transitions. Word has length 245 [2021-12-18 05:22:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:22:53,780 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 4028 transitions. [2021-12-18 05:22:53,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:22:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 4028 transitions. [2021-12-18 05:22:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-12-18 05:22:53,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:22:53,800 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:22:53,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 05:22:53,800 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:22:53,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:22:53,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1435732129, now seen corresponding path program 1 times [2021-12-18 05:22:53,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:22:53,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488707015] [2021-12-18 05:22:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:22:53,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:22:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:22:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:53,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:22:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:22:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:22:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:22:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:22:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:22:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:22:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:22:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:22:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:22:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:22:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:22:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 05:22:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 05:22:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 05:22:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 05:22:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:22:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2021-12-18 05:22:54,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:22:54,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488707015] [2021-12-18 05:22:54,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488707015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:22:54,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:22:54,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 05:22:54,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67105158] [2021-12-18 05:22:54,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:22:54,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 05:22:54,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:22:54,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 05:22:54,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-18 05:22:54,318 INFO L87 Difference]: Start difference. First operand 2850 states and 4028 transitions. Second operand has 13 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:22:59,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:00,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:02,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:03,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:05,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:06,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:08,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:10,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:20,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:22,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:24,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:26,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:28,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:30,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:37,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:38,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:41,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:43,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:44,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:45,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:47,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:49,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:50,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:52,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:54,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:55,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:57,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:23:58,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:24:00,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:24:02,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:24:03,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:24:05,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:24:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:24:06,185 INFO L93 Difference]: Finished difference Result 8123 states and 11957 transitions. [2021-12-18 05:24:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 05:24:06,186 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 246 [2021-12-18 05:24:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:24:06,213 INFO L225 Difference]: With dead ends: 8123 [2021-12-18 05:24:06,213 INFO L226 Difference]: Without dead ends: 5289 [2021-12-18 05:24:06,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-12-18 05:24:06,226 INFO L933 BasicCegarLoop]: 2605 mSDtfsCounter, 1572 mSDsluCounter, 17884 mSDsCounter, 0 mSdLazyCounter, 9396 mSolverCounterSat, 872 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 20489 SdHoareTripleChecker+Invalid, 10282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 872 IncrementalHoareTripleChecker+Valid, 9396 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:24:06,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1759 Valid, 20489 Invalid, 10282 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [872 Valid, 9396 Invalid, 14 Unknown, 0 Unchecked, 71.2s Time] [2021-12-18 05:24:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2021-12-18 05:24:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 2856. [2021-12-18 05:24:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2158 states have (on average 1.3734939759036144) internal successors, (2964), 2189 states have internal predecessors, (2964), 499 states have call successors, (499), 185 states have call predecessors, (499), 198 states have return successors, (575), 492 states have call predecessors, (575), 499 states have call successors, (575) [2021-12-18 05:24:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4038 transitions. [2021-12-18 05:24:06,419 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4038 transitions. Word has length 246 [2021-12-18 05:24:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:24:06,423 INFO L470 AbstractCegarLoop]: Abstraction has 2856 states and 4038 transitions. [2021-12-18 05:24:06,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:24:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4038 transitions. [2021-12-18 05:24:06,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-12-18 05:24:06,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:24:06,436 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:24:06,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 05:24:06,436 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:24:06,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:24:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash -341851867, now seen corresponding path program 1 times [2021-12-18 05:24:06,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:24:06,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637204743] [2021-12-18 05:24:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:24:06,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:24:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:24:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:24:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:24:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:24:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:24:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:24:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:24:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:24:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:24:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:24:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:24:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:24:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:24:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:24:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:24:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:24:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:06,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:24:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:24:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:24:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:24:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:24:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 05:24:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 05:24:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 05:24:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:24:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 73 proven. 56 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2021-12-18 05:24:07,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:24:07,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637204743] [2021-12-18 05:24:07,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637204743] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:24:07,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899295810] [2021-12-18 05:24:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:24:07,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:24:07,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:24:07,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:24:07,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 05:24:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:24:07,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-18 05:24:07,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:24:08,219 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 7 treesize of output 6 [2021-12-18 05:24:18,685 INFO L354 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2021-12-18 05:24:18,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 20 treesize of output 32 [2021-12-18 05:24:18,709 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 10 treesize of output 9 [2021-12-18 05:24:35,140 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 32 treesize of output 26 [2021-12-18 05:24:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 104 proven. 62 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2021-12-18 05:24:35,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 05:24:53,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899295810] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:24:53,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 05:24:53,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 37 [2021-12-18 05:24:53,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538993720] [2021-12-18 05:24:53,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 05:24:53,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-18 05:24:53,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:24:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-18 05:24:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1478, Unknown=16, NotChecked=0, Total=1640 [2021-12-18 05:24:53,721 INFO L87 Difference]: Start difference. First operand 2856 states and 4038 transitions. Second operand has 37 states, 36 states have (on average 5.222222222222222) internal successors, (188), 28 states have internal predecessors, (188), 15 states have call successors, (42), 8 states have call predecessors, (42), 10 states have return successors, (40), 20 states have call predecessors, (40), 15 states have call successors, (40) [2021-12-18 05:25:07,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:25:10,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:25:12,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:25:13,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:25:15,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:25:18,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:25:19,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:25:27,672 WARN L227 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 30 DAG size of output: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 05:25:37,621 WARN L227 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 28 DAG size of output: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 05:25:44,431 WARN L227 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 41 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 05:25:54,606 WARN L227 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 26 DAG size of output: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 05:26:14,064 WARN L227 SmtUtils]: Spent 14.54s on a formula simplification. DAG size of input: 39 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 05:26:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:26:23,402 INFO L93 Difference]: Finished difference Result 7986 states and 11599 transitions. [2021-12-18 05:26:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-18 05:26:23,403 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 5.222222222222222) internal successors, (188), 28 states have internal predecessors, (188), 15 states have call successors, (42), 8 states have call predecessors, (42), 10 states have return successors, (40), 20 states have call predecessors, (40), 15 states have call successors, (40) Word has length 248 [2021-12-18 05:26:23,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:26:23,435 INFO L225 Difference]: With dead ends: 7986 [2021-12-18 05:26:23,436 INFO L226 Difference]: Without dead ends: 5146 [2021-12-18 05:26:23,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 101.0s TimeCoverageRelationStatistics Valid=351, Invalid=2933, Unknown=22, NotChecked=0, Total=3306 [2021-12-18 05:26:23,443 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 3349 mSDsluCounter, 34257 mSDsCounter, 0 mSdLazyCounter, 16392 mSolverCounterSat, 1526 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3508 SdHoareTripleChecker+Valid, 36257 SdHoareTripleChecker+Invalid, 23246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1526 IncrementalHoareTripleChecker+Valid, 16392 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 5325 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:26:23,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3508 Valid, 36257 Invalid, 23246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1526 Valid, 16392 Invalid, 3 Unknown, 5325 Unchecked, 33.2s Time] [2021-12-18 05:26:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5146 states. [2021-12-18 05:26:23,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5146 to 4562. [2021-12-18 05:26:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4562 states, 3505 states have (on average 1.395435092724679) internal successors, (4891), 3552 states have internal predecessors, (4891), 808 states have call successors, (808), 233 states have call predecessors, (808), 248 states have return successors, (945), 796 states have call predecessors, (945), 808 states have call successors, (945) [2021-12-18 05:26:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4562 states to 4562 states and 6644 transitions. [2021-12-18 05:26:23,609 INFO L78 Accepts]: Start accepts. Automaton has 4562 states and 6644 transitions. Word has length 248 [2021-12-18 05:26:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:26:23,609 INFO L470 AbstractCegarLoop]: Abstraction has 4562 states and 6644 transitions. [2021-12-18 05:26:23,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 5.222222222222222) internal successors, (188), 28 states have internal predecessors, (188), 15 states have call successors, (42), 8 states have call predecessors, (42), 10 states have return successors, (40), 20 states have call predecessors, (40), 15 states have call successors, (40) [2021-12-18 05:26:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4562 states and 6644 transitions. [2021-12-18 05:26:23,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-12-18 05:26:23,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:26:23,621 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:26:23,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 05:26:23,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:26:23,836 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:26:23,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:26:23,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2033903198, now seen corresponding path program 1 times [2021-12-18 05:26:23,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:26:23,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223426921] [2021-12-18 05:26:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:26:23,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:26:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:26:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:26:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:26:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:26:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:26:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:26:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:26:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:26:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:26:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:26:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:26:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-18 05:26:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-12-18 05:26:24,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:26:24,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223426921] [2021-12-18 05:26:24,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223426921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:26:24,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:26:24,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 05:26:24,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104750657] [2021-12-18 05:26:24,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:26:24,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 05:26:24,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:26:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 05:26:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-18 05:26:24,117 INFO L87 Difference]: Start difference. First operand 4562 states and 6644 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:26:30,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:26:31,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:26:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:26:40,109 INFO L93 Difference]: Finished difference Result 9185 states and 13398 transitions. [2021-12-18 05:26:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 05:26:40,109 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) Word has length 246 [2021-12-18 05:26:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:26:40,138 INFO L225 Difference]: With dead ends: 9185 [2021-12-18 05:26:40,142 INFO L226 Difference]: Without dead ends: 4639 [2021-12-18 05:26:40,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-12-18 05:26:40,156 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1174 mSDsluCounter, 8885 mSDsCounter, 0 mSdLazyCounter, 6780 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 10550 SdHoareTripleChecker+Invalid, 7556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 6780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-12-18 05:26:40,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 10550 Invalid, 7556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 6780 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2021-12-18 05:26:40,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2021-12-18 05:26:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 4414. [2021-12-18 05:26:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4414 states, 3393 states have (on average 1.3972885352195696) internal successors, (4741), 3440 states have internal predecessors, (4741), 784 states have call successors, (784), 221 states have call predecessors, (784), 236 states have return successors, (921), 772 states have call predecessors, (921), 784 states have call successors, (921) [2021-12-18 05:26:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 6446 transitions. [2021-12-18 05:26:40,307 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 6446 transitions. Word has length 246 [2021-12-18 05:26:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:26:40,307 INFO L470 AbstractCegarLoop]: Abstraction has 4414 states and 6446 transitions. [2021-12-18 05:26:40,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 05:26:40,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 6446 transitions. [2021-12-18 05:26:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-12-18 05:26:40,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:26:40,343 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:26:40,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 05:26:40,344 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:26:40,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:26:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1151648279, now seen corresponding path program 1 times [2021-12-18 05:26:40,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:26:40,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531764340] [2021-12-18 05:26:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:26:40,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:26:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:26:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:26:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:26:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:26:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:26:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:26:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:26:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:26:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:26:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:26:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:26:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 05:26:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 05:26:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-18 05:26:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2021-12-18 05:26:40,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:26:40,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531764340] [2021-12-18 05:26:40,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531764340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:26:40,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:26:40,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 05:26:40,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757121441] [2021-12-18 05:26:40,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:26:40,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:26:40,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:26:40,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:26:40,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:26:40,615 INFO L87 Difference]: Start difference. First operand 4414 states and 6446 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 05:26:45,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:26:45,303 INFO L93 Difference]: Finished difference Result 11502 states and 17213 transitions. [2021-12-18 05:26:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 05:26:45,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 250 [2021-12-18 05:26:45,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:26:45,325 INFO L225 Difference]: With dead ends: 11502 [2021-12-18 05:26:45,326 INFO L226 Difference]: Without dead ends: 7104 [2021-12-18 05:26:45,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:26:45,340 INFO L933 BasicCegarLoop]: 2088 mSDtfsCounter, 1314 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 4486 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-18 05:26:45,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 4486 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-18 05:26:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7104 states. [2021-12-18 05:26:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7104 to 4414. [2021-12-18 05:26:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4414 states, 3393 states have (on average 1.3966990863542588) internal successors, (4739), 3440 states have internal predecessors, (4739), 784 states have call successors, (784), 221 states have call predecessors, (784), 236 states have return successors, (921), 772 states have call predecessors, (921), 784 states have call successors, (921) [2021-12-18 05:26:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 6444 transitions. [2021-12-18 05:26:45,563 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 6444 transitions. Word has length 250 [2021-12-18 05:26:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:26:45,563 INFO L470 AbstractCegarLoop]: Abstraction has 4414 states and 6444 transitions. [2021-12-18 05:26:45,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 05:26:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 6444 transitions. [2021-12-18 05:26:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-18 05:26:45,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:26:45,577 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:26:45,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 05:26:45,577 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:26:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:26:45,577 INFO L85 PathProgramCache]: Analyzing trace with hash -150599698, now seen corresponding path program 1 times [2021-12-18 05:26:45,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:26:45,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872760157] [2021-12-18 05:26:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:26:45,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:26:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:26:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:26:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:26:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:26:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:26:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:26:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:26:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:26:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:26:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:26:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:26:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:46,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:26:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:46,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:46,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 05:26:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-18 05:26:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:46,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-18 05:26:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:46,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:26:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 139 proven. 8 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2021-12-18 05:26:46,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:26:46,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872760157] [2021-12-18 05:26:46,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872760157] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:26:46,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009037625] [2021-12-18 05:26:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:26:46,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:26:46,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:26:46,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:26:46,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 05:26:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:26:46,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-18 05:26:46,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:26:46,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 05:26:46,871 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 7 treesize of output 6 [2021-12-18 05:26:47,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:26:47,059 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 6 treesize of output 4 [2021-12-18 05:26:47,111 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2101 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_2101))) is different from true [2021-12-18 05:26:47,168 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 05:26:47,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 05:26:47,199 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 13 treesize of output 15 [2021-12-18 05:26:47,205 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 05:26:47,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 05:27:03,358 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 28 treesize of output 22 [2021-12-18 05:27:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 196 proven. 11 refuted. 0 times theorem prover too weak. 432 trivial. 2 not checked. [2021-12-18 05:27:03,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 05:27:04,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009037625] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:27:04,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 05:27:04,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 29 [2021-12-18 05:27:04,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136529666] [2021-12-18 05:27:04,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 05:27:04,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-18 05:27:04,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:27:04,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-18 05:27:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=702, Unknown=11, NotChecked=54, Total=870 [2021-12-18 05:27:04,375 INFO L87 Difference]: Start difference. First operand 4414 states and 6444 transitions. Second operand has 29 states, 25 states have (on average 6.08) internal successors, (152), 22 states have internal predecessors, (152), 12 states have call successors, (43), 9 states have call predecessors, (43), 11 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2021-12-18 05:27:18,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:27:20,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:27:22,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:27:49,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:27:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:27:50,767 INFO L93 Difference]: Finished difference Result 16119 states and 24273 transitions. [2021-12-18 05:27:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-18 05:27:50,767 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 6.08) internal successors, (152), 22 states have internal predecessors, (152), 12 states have call successors, (43), 9 states have call predecessors, (43), 11 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) Word has length 251 [2021-12-18 05:27:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:27:50,799 INFO L225 Difference]: With dead ends: 16119 [2021-12-18 05:27:50,800 INFO L226 Difference]: Without dead ends: 11721 [2021-12-18 05:27:50,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 363 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=329, Invalid=2407, Unknown=24, NotChecked=102, Total=2862 [2021-12-18 05:27:50,815 INFO L933 BasicCegarLoop]: 2765 mSDtfsCounter, 3255 mSDsluCounter, 22175 mSDsCounter, 0 mSdLazyCounter, 9359 mSolverCounterSat, 1181 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3400 SdHoareTripleChecker+Valid, 24940 SdHoareTripleChecker+Invalid, 16501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1181 IncrementalHoareTripleChecker+Valid, 9359 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 5960 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:27:50,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3400 Valid, 24940 Invalid, 16501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1181 Valid, 9359 Invalid, 1 Unknown, 5960 Unchecked, 19.2s Time] [2021-12-18 05:27:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11721 states. [2021-12-18 05:27:51,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11721 to 10399. [2021-12-18 05:27:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10399 states, 8250 states have (on average 1.4303030303030304) internal successors, (11800), 8380 states have internal predecessors, (11800), 1672 states have call successors, (1672), 438 states have call predecessors, (1672), 476 states have return successors, (2036), 1620 states have call predecessors, (2036), 1672 states have call successors, (2036) [2021-12-18 05:27:51,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10399 states to 10399 states and 15508 transitions. [2021-12-18 05:27:51,281 INFO L78 Accepts]: Start accepts. Automaton has 10399 states and 15508 transitions. Word has length 251 [2021-12-18 05:27:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:27:51,282 INFO L470 AbstractCegarLoop]: Abstraction has 10399 states and 15508 transitions. [2021-12-18 05:27:51,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 6.08) internal successors, (152), 22 states have internal predecessors, (152), 12 states have call successors, (43), 9 states have call predecessors, (43), 11 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2021-12-18 05:27:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10399 states and 15508 transitions. [2021-12-18 05:27:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-12-18 05:27:51,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:27:51,408 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-12-18 05:27:51,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 05:27:51,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:27:51,627 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:27:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:27:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash -539410518, now seen corresponding path program 1 times [2021-12-18 05:27:51,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:27:51,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244794380] [2021-12-18 05:27:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:27:51,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:27:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:27:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:27:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:27:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:27:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:27:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:27:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 05:27:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 05:27:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:27:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:51,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 05:27:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:27:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 05:27:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:27:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:27:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:27:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 05:27:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:27:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 05:27:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:27:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 05:27:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:27:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 05:27:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:53,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:27:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:53,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 05:27:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:53,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-18 05:27:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:53,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:27:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 162 proven. 80 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-18 05:27:53,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:27:53,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244794380] [2021-12-18 05:27:53,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244794380] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:27:53,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046554704] [2021-12-18 05:27:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:27:53,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:27:53,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:27:53,073 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:27:53,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 05:27:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:27:53,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 2167 conjuncts, 105 conjunts are in the unsatisfiable core [2021-12-18 05:27:53,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:27:53,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 05:27:54,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:27:54,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 05:27:54,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 05:27:54,387 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 05:27:54,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-18 05:27:54,470 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 05:27:54,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 05:27:54,546 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 05:27:54,564 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 05:27:54,613 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-18 05:27:54,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-18 05:27:54,668 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 05:27:54,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 05:27:54,744 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 05:27:54,764 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 05:27:54,813 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-18 05:27:54,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-18 05:27:54,900 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 05:27:54,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 05:27:54,979 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 05:27:54,998 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 05:27:55,048 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-18 05:27:55,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-18 05:27:55,076 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 05:27:55,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 05:27:55,128 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 7 treesize of output 6 [2021-12-18 05:27:55,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 05:28:15,466 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-18 05:28:15,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 05:28:15,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-18 05:28:21,949 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-12-18 05:28:21,964 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 05:28:21,964 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 25 treesize of output 29 [2021-12-18 05:28:22,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2021-12-18 05:28:22,018 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 12 treesize of output 11 [2021-12-18 05:28:22,041 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 05:28:22,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 38 [2021-12-18 05:28:22,210 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 16 treesize of output 12 [2021-12-18 05:28:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 279 proven. 124 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-18 05:28:22,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 05:29:34,216 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_si4713_s_ext_ctrls_~ctrls#1.offset| Int) (|v_si4713_s_frequency_~frequency~1#1_10| Int) (v_ArrVal_2377 (Array Int Int)) (|v_si4713_s_frequency_~sdev~9#1.offset_12| Int)) (<= (mod (select (select (store (store |c_#memory_int| c_~si4713_subdev_tuner_ops_group0~0.base (store (select |c_#memory_int| c_~si4713_subdev_tuner_ops_group0~0.base) (+ |v_si4713_s_frequency_~sdev~9#1.offset_12| 2424) (mod |v_si4713_s_frequency_~frequency~1#1_10| 65536))) c_~si4713_subdev_tuner_ops_group1~0.base v_ArrVal_2377) c_~si4713_subdev_core_ops_group0~0.base) (+ |ULTIMATE.start_si4713_s_ext_ctrls_~ctrls#1.offset| 4)) 4294967296) 0)) is different from false [2021-12-18 05:29:34,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046554704] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:29:34,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 05:29:34,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 58 [2021-12-18 05:29:34,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54238986] [2021-12-18 05:29:34,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 05:29:34,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-18 05:29:34,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:29:34,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-18 05:29:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3518, Unknown=46, NotChecked=120, Total=3906 [2021-12-18 05:29:34,221 INFO L87 Difference]: Start difference. First operand 10399 states and 15508 transitions. Second operand has 58 states, 53 states have (on average 3.849056603773585) internal successors, (204), 44 states have internal predecessors, (204), 25 states have call successors, (53), 11 states have call predecessors, (53), 15 states have return successors, (45), 29 states have call predecessors, (45), 25 states have call successors, (45) [2021-12-18 05:29:52,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:29:58,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:01,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:03,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:27,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:28,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:29,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:32,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:34,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:36,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:41,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:48,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:50,777 WARN L534 Checker$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 05:31:06,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:31:33,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:31:42,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:32:19,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15