./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:50:59,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:50:59,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:50:59,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:50:59,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:50:59,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:50:59,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:50:59,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:50:59,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:50:59,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:50:59,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:50:59,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:50:59,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:50:59,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:50:59,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:50:59,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:50:59,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:50:59,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:50:59,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:50:59,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:50:59,552 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:50:59,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:50:59,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:50:59,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:50:59,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:50:59,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:50:59,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:50:59,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:50:59,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:50:59,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:50:59,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:50:59,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:50:59,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:50:59,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:50:59,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:50:59,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:50:59,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:50:59,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:50:59,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:50:59,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:50:59,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:50:59,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:50:59,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:50:59,586 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:50:59,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:50:59,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:50:59,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:50:59,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:50:59,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:50:59,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:50:59,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:50:59,590 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:50:59,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:50:59,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:50:59,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:50:59,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:50:59,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:50:59,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:50:59,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:50:59,592 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:50:59,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:50:59,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:50:59,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:50:59,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:50:59,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:50:59,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:50:59,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:50:59,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:50:59,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:50:59,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:50:59,594 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:50:59,595 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:50:59,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:50:59,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 [2022-07-22 23:50:59,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:50:59,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:50:59,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:50:59,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:50:59,827 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:50:59,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-07-22 23:50:59,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47178216f/847c74417c21401295143a35a8056ac1/FLAG47815c0b8 [2022-07-22 23:51:00,559 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:51:00,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-07-22 23:51:00,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47178216f/847c74417c21401295143a35a8056ac1/FLAG47815c0b8 [2022-07-22 23:51:00,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47178216f/847c74417c21401295143a35a8056ac1 [2022-07-22 23:51:00,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:51:00,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:51:00,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:51:00,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:51:00,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:51:00,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:51:00" (1/1) ... [2022-07-22 23:51:00,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfb7b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:00, skipping insertion in model container [2022-07-22 23:51:00,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:51:00" (1/1) ... [2022-07-22 23:51:00,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:51:00,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:51:01,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2022-07-22 23:51:02,187 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-22 23:51:02,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:51:02,215 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:51:02,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2022-07-22 23:51:02,463 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-22 23:51:02,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:51:02,539 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:51:02,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02 WrapperNode [2022-07-22 23:51:02,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:51:02,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:51:02,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:51:02,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:51:02,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (1/1) ... [2022-07-22 23:51:02,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (1/1) ... [2022-07-22 23:51:02,698 INFO L137 Inliner]: procedures = 184, calls = 840, calls flagged for inlining = 74, calls inlined = 63, statements flattened = 2136 [2022-07-22 23:51:02,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:51:02,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:51:02,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:51:02,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:51:02,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (1/1) ... [2022-07-22 23:51:02,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (1/1) ... [2022-07-22 23:51:02,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (1/1) ... [2022-07-22 23:51:02,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (1/1) ... [2022-07-22 23:51:02,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (1/1) ... [2022-07-22 23:51:02,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (1/1) ... [2022-07-22 23:51:02,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (1/1) ... [2022-07-22 23:51:02,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:51:02,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:51:02,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:51:02,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:51:02,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (1/1) ... [2022-07-22 23:51:02,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:51:02,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:51:02,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 23:51:02,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 23:51:02,996 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2022-07-22 23:51:02,996 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2022-07-22 23:51:02,996 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-22 23:51:02,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-22 23:51:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2022-07-22 23:51:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2022-07-22 23:51:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-22 23:51:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-22 23:51:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2022-07-22 23:51:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2022-07-22 23:51:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-22 23:51:02,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-22 23:51:02,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:51:02,998 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-22 23:51:02,998 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-22 23:51:02,998 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2022-07-22 23:51:02,998 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2022-07-22 23:51:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-22 23:51:02,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-22 23:51:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2022-07-22 23:51:02,999 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2022-07-22 23:51:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:51:02,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:51:03,000 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-07-22 23:51:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-07-22 23:51:03,000 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2022-07-22 23:51:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2022-07-22 23:51:03,000 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2022-07-22 23:51:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2022-07-22 23:51:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2022-07-22 23:51:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2022-07-22 23:51:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-22 23:51:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-22 23:51:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:51:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2022-07-22 23:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2022-07-22 23:51:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2022-07-22 23:51:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2022-07-22 23:51:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-07-22 23:51:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-07-22 23:51:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-22 23:51:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-22 23:51:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:51:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:51:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:51:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:51:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:51:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2022-07-22 23:51:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2022-07-22 23:51:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:51:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:51:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2022-07-22 23:51:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2022-07-22 23:51:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 23:51:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 23:51:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 23:51:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 23:51:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:51:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2022-07-22 23:51:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2022-07-22 23:51:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 23:51:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 23:51:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-22 23:51:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-22 23:51:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:51:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2022-07-22 23:51:03,009 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2022-07-22 23:51:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:51:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:51:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-22 23:51:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-22 23:51:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-22 23:51:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2022-07-22 23:51:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2022-07-22 23:51:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-22 23:51:03,011 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-22 23:51:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:51:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-22 23:51:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-22 23:51:03,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-22 23:51:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-22 23:51:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-22 23:51:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-22 23:51:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-22 23:51:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-22 23:51:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-22 23:51:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2022-07-22 23:51:03,013 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2022-07-22 23:51:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2022-07-22 23:51:03,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2022-07-22 23:51:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-22 23:51:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-22 23:51:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2022-07-22 23:51:03,015 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2022-07-22 23:51:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-22 23:51:03,015 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-22 23:51:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:51:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:51:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-22 23:51:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-22 23:51:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-22 23:51:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-22 23:51:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2022-07-22 23:51:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2022-07-22 23:51:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2022-07-22 23:51:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2022-07-22 23:51:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2022-07-22 23:51:03,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2022-07-22 23:51:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-22 23:51:03,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-22 23:51:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 23:51:03,018 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 23:51:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-22 23:51:03,018 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-22 23:51:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-22 23:51:03,019 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-22 23:51:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2022-07-22 23:51:03,021 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2022-07-22 23:51:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2022-07-22 23:51:03,022 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2022-07-22 23:51:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:51:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2022-07-22 23:51:03,024 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2022-07-22 23:51:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-22 23:51:03,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-22 23:51:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-22 23:51:03,030 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-22 23:51:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:51:03,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:51:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2022-07-22 23:51:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2022-07-22 23:51:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2022-07-22 23:51:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2022-07-22 23:51:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 23:51:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 23:51:03,547 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:51:03,550 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:51:03,992 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-22 23:51:05,427 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:51:05,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:51:05,439 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 23:51:05,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:51:05 BoogieIcfgContainer [2022-07-22 23:51:05,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:51:05,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:51:05,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:51:05,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:51:05,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:51:00" (1/3) ... [2022-07-22 23:51:05,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d769f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:51:05, skipping insertion in model container [2022-07-22 23:51:05,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:51:02" (2/3) ... [2022-07-22 23:51:05,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d769f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:51:05, skipping insertion in model container [2022-07-22 23:51:05,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:51:05" (3/3) ... [2022-07-22 23:51:05,450 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-07-22 23:51:05,463 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:51:05,463 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:51:05,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:51:05,542 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@577a58d3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75eb1858 [2022-07-22 23:51:05,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:51:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 883 states, 628 states have (on average 1.3678343949044587) internal successors, (859), 645 states have internal predecessors, (859), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2022-07-22 23:51:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 23:51:05,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:05,562 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:51:05,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:05,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1822953326, now seen corresponding path program 1 times [2022-07-22 23:51:05,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:05,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740816010] [2022-07-22 23:51:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:05,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:05,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:51:06,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:06,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740816010] [2022-07-22 23:51:06,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740816010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:06,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:06,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:51:06,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401582063] [2022-07-22 23:51:06,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:06,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:51:06,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:06,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:51:06,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:51:06,053 INFO L87 Difference]: Start difference. First operand has 883 states, 628 states have (on average 1.3678343949044587) internal successors, (859), 645 states have internal predecessors, (859), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 23:51:09,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:09,582 INFO L93 Difference]: Finished difference Result 2819 states and 4163 transitions. [2022-07-22 23:51:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:51:09,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-22 23:51:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:09,610 INFO L225 Difference]: With dead ends: 2819 [2022-07-22 23:51:09,611 INFO L226 Difference]: Without dead ends: 1895 [2022-07-22 23:51:09,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:51:09,627 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 1780 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 3985 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:09,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1934 Valid, 3985 Invalid, 3091 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [583 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 23:51:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2022-07-22 23:51:09,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1715. [2022-07-22 23:51:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1225 states have (on average 1.3061224489795917) internal successors, (1600), 1250 states have internal predecessors, (1600), 370 states have call successors, (370), 118 states have call predecessors, (370), 119 states have return successors, (383), 368 states have call predecessors, (383), 369 states have call successors, (383) [2022-07-22 23:51:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2353 transitions. [2022-07-22 23:51:09,820 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2353 transitions. Word has length 32 [2022-07-22 23:51:09,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:09,820 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2353 transitions. [2022-07-22 23:51:09,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 23:51:09,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2353 transitions. [2022-07-22 23:51:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 23:51:09,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:09,836 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 23:51:09,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:51:09,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:09,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:09,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1119313245, now seen corresponding path program 1 times [2022-07-22 23:51:09,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:09,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097295547] [2022-07-22 23:51:09,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:09,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:09,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:09,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:09,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:51:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:10,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:10,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:51:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:10,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:51:10,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:10,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097295547] [2022-07-22 23:51:10,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097295547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:10,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:10,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:51:10,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144166259] [2022-07-22 23:51:10,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:10,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:51:10,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:10,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:51:10,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:51:10,069 INFO L87 Difference]: Start difference. First operand 1715 states and 2353 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 23:51:13,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:13,762 INFO L93 Difference]: Finished difference Result 3891 states and 5498 transitions. [2022-07-22 23:51:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:51:13,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2022-07-22 23:51:13,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:13,778 INFO L225 Difference]: With dead ends: 3891 [2022-07-22 23:51:13,778 INFO L226 Difference]: Without dead ends: 2184 [2022-07-22 23:51:13,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:51:13,787 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 902 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:13,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 2424 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-22 23:51:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-07-22 23:51:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1825. [2022-07-22 23:51:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1311 states have (on average 1.3043478260869565) internal successors, (1710), 1339 states have internal predecessors, (1710), 382 states have call successors, (382), 127 states have call predecessors, (382), 131 states have return successors, (401), 380 states have call predecessors, (401), 381 states have call successors, (401) [2022-07-22 23:51:13,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2493 transitions. [2022-07-22 23:51:13,896 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2493 transitions. Word has length 77 [2022-07-22 23:51:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:13,897 INFO L495 AbstractCegarLoop]: Abstraction has 1825 states and 2493 transitions. [2022-07-22 23:51:13,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 23:51:13,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2493 transitions. [2022-07-22 23:51:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 23:51:13,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:13,903 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-07-22 23:51:13,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:51:13,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash 549574912, now seen corresponding path program 1 times [2022-07-22 23:51:13,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:13,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765479472] [2022-07-22 23:51:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:13,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:14,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:51:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:14,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:51:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 23:51:14,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:14,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765479472] [2022-07-22 23:51:14,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765479472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:14,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:14,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:51:14,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513862781] [2022-07-22 23:51:14,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:14,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:51:14,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:14,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:51:14,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:51:14,188 INFO L87 Difference]: Start difference. First operand 1825 states and 2493 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 23:51:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:18,655 INFO L93 Difference]: Finished difference Result 5681 states and 8049 transitions. [2022-07-22 23:51:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:51:18,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 101 [2022-07-22 23:51:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:18,681 INFO L225 Difference]: With dead ends: 5681 [2022-07-22 23:51:18,681 INFO L226 Difference]: Without dead ends: 3885 [2022-07-22 23:51:18,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:51:18,690 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 3109 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 1636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 3736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1636 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:18,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3274 Valid, 2430 Invalid, 3736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1636 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-22 23:51:18,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2022-07-22 23:51:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3192. [2022-07-22 23:51:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2318 states have (on average 1.2959447799827437) internal successors, (3004), 2360 states have internal predecessors, (3004), 630 states have call successors, (630), 234 states have call predecessors, (630), 243 states have return successors, (657), 627 states have call predecessors, (657), 629 states have call successors, (657) [2022-07-22 23:51:18,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4291 transitions. [2022-07-22 23:51:18,874 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4291 transitions. Word has length 101 [2022-07-22 23:51:18,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:18,876 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4291 transitions. [2022-07-22 23:51:18,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 23:51:18,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4291 transitions. [2022-07-22 23:51:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 23:51:18,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:18,882 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-07-22 23:51:18,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:51:18,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:18,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash 614230688, now seen corresponding path program 1 times [2022-07-22 23:51:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:18,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288228162] [2022-07-22 23:51:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:18,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:19,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:19,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:19,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:19,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:51:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:51:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 23:51:19,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:19,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288228162] [2022-07-22 23:51:19,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288228162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:19,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:19,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:51:19,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100110053] [2022-07-22 23:51:19,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:19,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:51:19,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:19,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:51:19,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:51:19,125 INFO L87 Difference]: Start difference. First operand 3192 states and 4291 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 23:51:22,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:22,990 INFO L93 Difference]: Finished difference Result 5541 states and 7801 transitions. [2022-07-22 23:51:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:51:22,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 101 [2022-07-22 23:51:22,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:23,038 INFO L225 Difference]: With dead ends: 5541 [2022-07-22 23:51:23,038 INFO L226 Difference]: Without dead ends: 3880 [2022-07-22 23:51:23,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:51:23,049 INFO L413 NwaCegarLoop]: 1075 mSDtfsCounter, 1136 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 808 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:23,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 2351 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [808 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-22 23:51:23,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2022-07-22 23:51:23,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3196. [2022-07-22 23:51:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 2322 states have (on average 1.2954349698535745) internal successors, (3008), 2364 states have internal predecessors, (3008), 630 states have call successors, (630), 234 states have call predecessors, (630), 243 states have return successors, (657), 627 states have call predecessors, (657), 629 states have call successors, (657) [2022-07-22 23:51:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4295 transitions. [2022-07-22 23:51:23,228 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4295 transitions. Word has length 101 [2022-07-22 23:51:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:23,229 INFO L495 AbstractCegarLoop]: Abstraction has 3196 states and 4295 transitions. [2022-07-22 23:51:23,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 23:51:23,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4295 transitions. [2022-07-22 23:51:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 23:51:23,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:23,239 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-07-22 23:51:23,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:51:23,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:23,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:23,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2002732129, now seen corresponding path program 1 times [2022-07-22 23:51:23,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:23,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177509880] [2022-07-22 23:51:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:23,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:51:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:23,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:51:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:23,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 23:51:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:23,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177509880] [2022-07-22 23:51:23,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177509880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:23,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:23,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 23:51:23,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512965043] [2022-07-22 23:51:23,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:23,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:51:23,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:51:23,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:51:23,538 INFO L87 Difference]: Start difference. First operand 3196 states and 4295 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 23:51:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:30,139 INFO L93 Difference]: Finished difference Result 7903 states and 11032 transitions. [2022-07-22 23:51:30,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 23:51:30,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 103 [2022-07-22 23:51:30,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:30,168 INFO L225 Difference]: With dead ends: 7903 [2022-07-22 23:51:30,168 INFO L226 Difference]: Without dead ends: 4736 [2022-07-22 23:51:30,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2022-07-22 23:51:30,179 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 4511 mSDsluCounter, 2178 mSDsCounter, 0 mSdLazyCounter, 5484 mSolverCounterSat, 2575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4793 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 8059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2575 IncrementalHoareTripleChecker+Valid, 5484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:30,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4793 Valid, 3449 Invalid, 8059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2575 Valid, 5484 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-22 23:51:30,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2022-07-22 23:51:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 3852. [2022-07-22 23:51:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 2818 states have (on average 1.2945351312987934) internal successors, (3648), 2868 states have internal predecessors, (3648), 752 states have call successors, (752), 276 states have call predecessors, (752), 281 states have return successors, (777), 745 states have call predecessors, (777), 751 states have call successors, (777) [2022-07-22 23:51:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5177 transitions. [2022-07-22 23:51:30,376 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5177 transitions. Word has length 103 [2022-07-22 23:51:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:30,380 INFO L495 AbstractCegarLoop]: Abstraction has 3852 states and 5177 transitions. [2022-07-22 23:51:30,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 23:51:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5177 transitions. [2022-07-22 23:51:30,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 23:51:30,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:30,388 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:51:30,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:51:30,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:30,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1480360647, now seen corresponding path program 1 times [2022-07-22 23:51:30,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:30,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090699779] [2022-07-22 23:51:30,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:30,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:51:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:51:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 23:51:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 23:51:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 23:51:30,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:30,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090699779] [2022-07-22 23:51:30,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090699779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:30,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:30,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 23:51:30,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726205211] [2022-07-22 23:51:30,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:30,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:51:30,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:30,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:51:30,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:51:30,778 INFO L87 Difference]: Start difference. First operand 3852 states and 5177 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:51:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:34,891 INFO L93 Difference]: Finished difference Result 8467 states and 11797 transitions. [2022-07-22 23:51:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:51:34,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 132 [2022-07-22 23:51:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:34,917 INFO L225 Difference]: With dead ends: 8467 [2022-07-22 23:51:34,917 INFO L226 Difference]: Without dead ends: 4644 [2022-07-22 23:51:34,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:51:34,932 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 755 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 3412 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 3842 SdHoareTripleChecker+Invalid, 3958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 3412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:34,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 3842 Invalid, 3958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 3412 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-22 23:51:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2022-07-22 23:51:35,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 3880. [2022-07-22 23:51:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 2838 states have (on average 1.2924594785059902) internal successors, (3668), 2890 states have internal predecessors, (3668), 752 states have call successors, (752), 276 states have call predecessors, (752), 289 states have return successors, (789), 751 states have call predecessors, (789), 751 states have call successors, (789) [2022-07-22 23:51:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 5209 transitions. [2022-07-22 23:51:35,185 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 5209 transitions. Word has length 132 [2022-07-22 23:51:35,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:35,187 INFO L495 AbstractCegarLoop]: Abstraction has 3880 states and 5209 transitions. [2022-07-22 23:51:35,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:51:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 5209 transitions. [2022-07-22 23:51:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 23:51:35,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:35,195 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:51:35,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:51:35,196 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:35,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:35,196 INFO L85 PathProgramCache]: Analyzing trace with hash 993276834, now seen corresponding path program 1 times [2022-07-22 23:51:35,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:35,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126357457] [2022-07-22 23:51:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:35,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:51:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:51:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:51:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:51:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:51:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:51:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 23:51:35,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:35,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126357457] [2022-07-22 23:51:35,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126357457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:35,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:35,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:51:35,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523379996] [2022-07-22 23:51:35,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:35,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:51:35,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:35,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:51:35,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:51:35,532 INFO L87 Difference]: Start difference. First operand 3880 states and 5209 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:51:38,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:51:40,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:40,604 INFO L93 Difference]: Finished difference Result 8476 states and 11732 transitions. [2022-07-22 23:51:40,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:51:40,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 153 [2022-07-22 23:51:40,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:40,644 INFO L225 Difference]: With dead ends: 8476 [2022-07-22 23:51:40,644 INFO L226 Difference]: Without dead ends: 4612 [2022-07-22 23:51:40,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:51:40,661 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 1565 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:40,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 2439 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-22 23:51:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2022-07-22 23:51:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 3856. [2022-07-22 23:51:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 2816 states have (on average 1.2879971590909092) internal successors, (3627), 2868 states have internal predecessors, (3627), 750 states have call successors, (750), 276 states have call predecessors, (750), 289 states have return successors, (785), 749 states have call predecessors, (785), 749 states have call successors, (785) [2022-07-22 23:51:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5162 transitions. [2022-07-22 23:51:40,908 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5162 transitions. Word has length 153 [2022-07-22 23:51:40,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:40,908 INFO L495 AbstractCegarLoop]: Abstraction has 3856 states and 5162 transitions. [2022-07-22 23:51:40,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:51:40,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5162 transitions. [2022-07-22 23:51:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 23:51:40,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:40,921 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:51:40,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:51:40,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash -276957105, now seen corresponding path program 1 times [2022-07-22 23:51:40,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:40,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900898181] [2022-07-22 23:51:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:51:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:51:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:51:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:51:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:51:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:51:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 23:51:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 23:51:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-22 23:51:41,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:41,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900898181] [2022-07-22 23:51:41,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900898181] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:51:41,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99071529] [2022-07-22 23:51:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:41,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:51:41,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:51:41,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:51:41,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 23:51:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:41,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 23:51:41,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:51:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 23:51:42,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:51:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-22 23:51:42,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99071529] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 23:51:42,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:51:42,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 8] total 23 [2022-07-22 23:51:42,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290258840] [2022-07-22 23:51:42,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:42,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:51:42,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:51:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-07-22 23:51:42,840 INFO L87 Difference]: Start difference. First operand 3856 states and 5162 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-22 23:51:47,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:47,878 INFO L93 Difference]: Finished difference Result 8968 states and 12269 transitions. [2022-07-22 23:51:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 23:51:47,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 161 [2022-07-22 23:51:47,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:47,909 INFO L225 Difference]: With dead ends: 8968 [2022-07-22 23:51:47,909 INFO L226 Difference]: Without dead ends: 6640 [2022-07-22 23:51:47,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-07-22 23:51:47,921 INFO L413 NwaCegarLoop]: 1711 mSDtfsCounter, 4315 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 5288 mSolverCounterSat, 1882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4448 SdHoareTripleChecker+Valid, 4632 SdHoareTripleChecker+Invalid, 7170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1882 IncrementalHoareTripleChecker+Valid, 5288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:47,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4448 Valid, 4632 Invalid, 7170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1882 Valid, 5288 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-22 23:51:47,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2022-07-22 23:51:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 5606. [2022-07-22 23:51:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 4083 states have (on average 1.2885133480284106) internal successors, (5261), 4166 states have internal predecessors, (5261), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-22 23:51:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 7553 transitions. [2022-07-22 23:51:48,283 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 7553 transitions. Word has length 161 [2022-07-22 23:51:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:48,284 INFO L495 AbstractCegarLoop]: Abstraction has 5606 states and 7553 transitions. [2022-07-22 23:51:48,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-22 23:51:48,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 7553 transitions. [2022-07-22 23:51:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 23:51:48,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:48,294 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:51:48,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 23:51:48,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:51:48,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash -924833424, now seen corresponding path program 1 times [2022-07-22 23:51:48,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:48,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646111268] [2022-07-22 23:51:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:51:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:51:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:51:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:51:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:51:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:51:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 23:51:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 23:51:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 23:51:48,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:48,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646111268] [2022-07-22 23:51:48,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646111268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:48,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:48,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:51:48,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582716750] [2022-07-22 23:51:48,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:48,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:51:48,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:51:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:51:48,848 INFO L87 Difference]: Start difference. First operand 5606 states and 7553 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:51:54,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:51:55,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:55,383 INFO L93 Difference]: Finished difference Result 10773 states and 15104 transitions. [2022-07-22 23:51:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:51:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2022-07-22 23:51:55,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:55,405 INFO L225 Difference]: With dead ends: 10773 [2022-07-22 23:51:55,405 INFO L226 Difference]: Without dead ends: 6695 [2022-07-22 23:51:55,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:51:55,418 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 506 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:55,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 3217 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-22 23:51:55,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2022-07-22 23:51:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 5604. [2022-07-22 23:51:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5604 states, 4081 states have (on average 1.287674589561382) internal successors, (5255), 4164 states have internal predecessors, (5255), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-22 23:51:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 7547 transitions. [2022-07-22 23:51:55,757 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 7547 transitions. Word has length 163 [2022-07-22 23:51:55,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:55,758 INFO L495 AbstractCegarLoop]: Abstraction has 5604 states and 7547 transitions. [2022-07-22 23:51:55,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:51:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 7547 transitions. [2022-07-22 23:51:55,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-22 23:51:55,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:55,770 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:51:55,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 23:51:55,771 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:55,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash -249324809, now seen corresponding path program 1 times [2022-07-22 23:51:55,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:55,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981458061] [2022-07-22 23:51:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:55,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:55,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:55,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:55,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:51:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:55,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:51:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:55,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:51:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:51:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:51:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:51:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:51:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:51:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:51:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:51:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:51:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 23:51:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 23:51:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:51:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 23:51:56,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:51:56,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981458061] [2022-07-22 23:51:56,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981458061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:51:56,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:51:56,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:51:56,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458600906] [2022-07-22 23:51:56,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:51:56,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:51:56,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:51:56,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:51:56,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:51:56,130 INFO L87 Difference]: Start difference. First operand 5604 states and 7547 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:51:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:51:59,517 INFO L93 Difference]: Finished difference Result 12287 states and 17119 transitions. [2022-07-22 23:51:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:51:59,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2022-07-22 23:51:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:51:59,540 INFO L225 Difference]: With dead ends: 12287 [2022-07-22 23:51:59,541 INFO L226 Difference]: Without dead ends: 6735 [2022-07-22 23:51:59,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:51:59,560 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 1111 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:51:59,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 2978 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 23:51:59,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6735 states. [2022-07-22 23:51:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6735 to 5616. [2022-07-22 23:51:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5616 states, 4093 states have (on average 1.2868311751771317) internal successors, (5267), 4176 states have internal predecessors, (5267), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-22 23:51:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5616 states to 5616 states and 7559 transitions. [2022-07-22 23:51:59,887 INFO L78 Accepts]: Start accepts. Automaton has 5616 states and 7559 transitions. Word has length 165 [2022-07-22 23:51:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:51:59,888 INFO L495 AbstractCegarLoop]: Abstraction has 5616 states and 7559 transitions. [2022-07-22 23:51:59,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:51:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5616 states and 7559 transitions. [2022-07-22 23:51:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-22 23:51:59,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:51:59,898 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:51:59,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 23:51:59,899 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:51:59,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:51:59,901 INFO L85 PathProgramCache]: Analyzing trace with hash -352747458, now seen corresponding path program 1 times [2022-07-22 23:51:59,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:51:59,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823953386] [2022-07-22 23:51:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:51:59,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:51:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:52:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:52:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:52:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:52:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:52:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 23:52:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:52:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 23:52:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 23:52:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 23:52:00,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:52:00,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823953386] [2022-07-22 23:52:00,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823953386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:52:00,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:52:00,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:52:00,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114396843] [2022-07-22 23:52:00,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:52:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:52:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:52:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:52:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:52:00,186 INFO L87 Difference]: Start difference. First operand 5616 states and 7559 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:52:03,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:52:03,095 INFO L93 Difference]: Finished difference Result 12487 states and 17445 transitions. [2022-07-22 23:52:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:52:03,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2022-07-22 23:52:03,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:52:03,122 INFO L225 Difference]: With dead ends: 12487 [2022-07-22 23:52:03,122 INFO L226 Difference]: Without dead ends: 6923 [2022-07-22 23:52:03,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:52:03,136 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 819 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:52:03,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2372 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 23:52:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6923 states. [2022-07-22 23:52:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6923 to 5664. [2022-07-22 23:52:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 4141 states have (on average 1.2835063994204299) internal successors, (5315), 4224 states have internal predecessors, (5315), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-22 23:52:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 7607 transitions. [2022-07-22 23:52:03,481 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 7607 transitions. Word has length 166 [2022-07-22 23:52:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:52:03,482 INFO L495 AbstractCegarLoop]: Abstraction has 5664 states and 7607 transitions. [2022-07-22 23:52:03,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:52:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 7607 transitions. [2022-07-22 23:52:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 23:52:03,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:52:03,494 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:52:03,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 23:52:03,494 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:52:03,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:52:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1090966733, now seen corresponding path program 1 times [2022-07-22 23:52:03,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:52:03,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196382553] [2022-07-22 23:52:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:52:03,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:52:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:52:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:52:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:52:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:52:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:52:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:52:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 23:52:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 23:52:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 23:52:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 23:52:03,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:52:03,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196382553] [2022-07-22 23:52:03,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196382553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:52:03,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:52:03,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:52:03,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299340603] [2022-07-22 23:52:03,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:52:03,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:52:03,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:52:03,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:52:03,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:52:03,764 INFO L87 Difference]: Start difference. First operand 5664 states and 7607 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:52:08,329 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 [] [2022-07-22 23:52:09,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:52:09,276 INFO L93 Difference]: Finished difference Result 12523 states and 17417 transitions. [2022-07-22 23:52:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:52:09,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 169 [2022-07-22 23:52:09,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:52:09,313 INFO L225 Difference]: With dead ends: 12523 [2022-07-22 23:52:09,313 INFO L226 Difference]: Without dead ends: 6911 [2022-07-22 23:52:09,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:52:09,333 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 767 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:52:09,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 2653 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-22 23:52:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6911 states. [2022-07-22 23:52:09,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6911 to 5676. [2022-07-22 23:52:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 4153 states have (on average 1.2826872140621237) internal successors, (5327), 4236 states have internal predecessors, (5327), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-22 23:52:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 7619 transitions. [2022-07-22 23:52:09,745 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 7619 transitions. Word has length 169 [2022-07-22 23:52:09,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:52:09,746 INFO L495 AbstractCegarLoop]: Abstraction has 5676 states and 7619 transitions. [2022-07-22 23:52:09,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:52:09,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 7619 transitions. [2022-07-22 23:52:09,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-22 23:52:09,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:52:09,756 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:52:09,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 23:52:09,757 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:52:09,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:52:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash 640861731, now seen corresponding path program 1 times [2022-07-22 23:52:09,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:52:09,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112423210] [2022-07-22 23:52:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:52:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:52:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:10,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:52:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:52:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:11,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:11,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:52:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:11,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:52:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:52:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:52:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 23:52:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:12,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 23:52:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 23:52:12,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:52:12,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112423210] [2022-07-22 23:52:12,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112423210] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:52:12,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828141859] [2022-07-22 23:52:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:52:12,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:52:12,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:52:12,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:52:12,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 23:52:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:12,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-22 23:52:12,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:52:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 23:52:13,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:52:13,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828141859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:52:13,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:52:13,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [39] total 49 [2022-07-22 23:52:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196914940] [2022-07-22 23:52:13,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:52:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 23:52:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:52:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 23:52:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=2230, Unknown=0, NotChecked=0, Total=2352 [2022-07-22 23:52:13,086 INFO L87 Difference]: Start difference. First operand 5676 states and 7619 transitions. Second operand has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 23:52:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:52:13,878 INFO L93 Difference]: Finished difference Result 12382 states and 16770 transitions. [2022-07-22 23:52:13,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 23:52:13,878 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 172 [2022-07-22 23:52:13,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:52:13,908 INFO L225 Difference]: With dead ends: 12382 [2022-07-22 23:52:13,908 INFO L226 Difference]: Without dead ends: 6758 [2022-07-22 23:52:13,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=150, Invalid=2712, Unknown=0, NotChecked=0, Total=2862 [2022-07-22 23:52:13,932 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 270 mSDsluCounter, 14799 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 16078 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:52:13,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 16078 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:52:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6758 states. [2022-07-22 23:52:14,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6758 to 5676. [2022-07-22 23:52:14,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 4153 states have (on average 1.2778714182518662) internal successors, (5307), 4236 states have internal predecessors, (5307), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-22 23:52:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 7599 transitions. [2022-07-22 23:52:14,365 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 7599 transitions. Word has length 172 [2022-07-22 23:52:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:52:14,365 INFO L495 AbstractCegarLoop]: Abstraction has 5676 states and 7599 transitions. [2022-07-22 23:52:14,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 23:52:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 7599 transitions. [2022-07-22 23:52:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-22 23:52:14,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:52:14,376 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:52:14,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 23:52:14,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 23:52:14,600 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:52:14,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:52:14,600 INFO L85 PathProgramCache]: Analyzing trace with hash 159781473, now seen corresponding path program 1 times [2022-07-22 23:52:14,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:52:14,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426198221] [2022-07-22 23:52:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:52:14,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:52:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:15,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:15,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:52:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:52:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:52:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:16,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:52:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:16,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:52:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:52:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:52:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:52:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:16,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:52:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:16,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:52:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:17,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 23:52:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 23:52:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 23:52:17,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:52:17,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426198221] [2022-07-22 23:52:17,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426198221] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:52:17,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854745270] [2022-07-22 23:52:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:52:17,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:52:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:52:17,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:52:17,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 23:52:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:52:17,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-22 23:52:17,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:52:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 23:52:18,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:52:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 23:52:19,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854745270] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:52:19,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:52:19,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 14, 12] total 51 [2022-07-22 23:52:19,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062848656] [2022-07-22 23:52:19,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:52:19,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-22 23:52:19,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:52:19,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-22 23:52:19,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2417, Unknown=0, NotChecked=0, Total=2550 [2022-07-22 23:52:19,081 INFO L87 Difference]: Start difference. First operand 5676 states and 7599 transitions. Second operand has 51 states, 46 states have (on average 5.217391304347826) internal successors, (240), 39 states have internal predecessors, (240), 13 states have call successors, (37), 6 states have call predecessors, (37), 12 states have return successors, (37), 16 states have call predecessors, (37), 13 states have call successors, (37) [2022-07-22 23:52:53,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:52:56,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:52:59,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:53:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:53:11,534 INFO L93 Difference]: Finished difference Result 16124 states and 22700 transitions. [2022-07-22 23:53:11,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-07-22 23:53:11,535 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 46 states have (on average 5.217391304347826) internal successors, (240), 39 states have internal predecessors, (240), 13 states have call successors, (37), 6 states have call predecessors, (37), 12 states have return successors, (37), 16 states have call predecessors, (37), 13 states have call successors, (37) Word has length 172 [2022-07-22 23:53:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:53:11,572 INFO L225 Difference]: With dead ends: 16124 [2022-07-22 23:53:11,572 INFO L226 Difference]: Without dead ends: 10477 [2022-07-22 23:53:11,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 383 SyntacticMatches, 3 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4631 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1204, Invalid=16886, Unknown=0, NotChecked=0, Total=18090 [2022-07-22 23:53:11,592 INFO L413 NwaCegarLoop]: 1354 mSDtfsCounter, 5269 mSDsluCounter, 23244 mSDsCounter, 0 mSdLazyCounter, 47184 mSolverCounterSat, 2756 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5370 SdHoareTripleChecker+Valid, 24598 SdHoareTripleChecker+Invalid, 49942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2756 IncrementalHoareTripleChecker+Valid, 47184 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:53:11,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5370 Valid, 24598 Invalid, 49942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2756 Valid, 47184 Invalid, 2 Unknown, 0 Unchecked, 44.6s Time] [2022-07-22 23:53:11,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10477 states. [2022-07-22 23:53:12,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10477 to 6673. [2022-07-22 23:53:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6673 states, 4894 states have (on average 1.2725786677564364) internal successors, (6228), 5001 states have internal predecessors, (6228), 1267 states have call successors, (1267), 460 states have call predecessors, (1267), 511 states have return successors, (1475), 1270 states have call predecessors, (1475), 1266 states have call successors, (1475) [2022-07-22 23:53:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6673 states to 6673 states and 8970 transitions. [2022-07-22 23:53:12,180 INFO L78 Accepts]: Start accepts. Automaton has 6673 states and 8970 transitions. Word has length 172 [2022-07-22 23:53:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:53:12,181 INFO L495 AbstractCegarLoop]: Abstraction has 6673 states and 8970 transitions. [2022-07-22 23:53:12,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 46 states have (on average 5.217391304347826) internal successors, (240), 39 states have internal predecessors, (240), 13 states have call successors, (37), 6 states have call predecessors, (37), 12 states have return successors, (37), 16 states have call predecessors, (37), 13 states have call successors, (37) [2022-07-22 23:53:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6673 states and 8970 transitions. [2022-07-22 23:53:12,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-22 23:53:12,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:53:12,197 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:53:12,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 23:53:12,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:53:12,415 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:53:12,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:53:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash -61046879, now seen corresponding path program 1 times [2022-07-22 23:53:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:53:12,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22738766] [2022-07-22 23:53:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:12,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:53:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:53:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:53:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:53:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 23:53:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 23:53:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 23:53:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 23:53:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 23:53:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 23:53:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-22 23:53:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 23:53:12,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:53:12,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22738766] [2022-07-22 23:53:12,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22738766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:53:12,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:53:12,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:53:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724764667] [2022-07-22 23:53:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:53:12,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:53:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:53:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:53:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:53:12,663 INFO L87 Difference]: Start difference. First operand 6673 states and 8970 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-22 23:53:16,651 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 [] [2022-07-22 23:53:17,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:53:17,742 INFO L93 Difference]: Finished difference Result 13433 states and 18498 transitions. [2022-07-22 23:53:17,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:53:17,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2022-07-22 23:53:17,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:53:17,771 INFO L225 Difference]: With dead ends: 13433 [2022-07-22 23:53:17,771 INFO L226 Difference]: Without dead ends: 7692 [2022-07-22 23:53:17,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:53:17,786 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 842 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 593 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:53:17,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 3546 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2334 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-07-22 23:53:17,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7692 states. [2022-07-22 23:53:18,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7692 to 6709. [2022-07-22 23:53:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6709 states, 4921 states have (on average 1.2735216419426947) internal successors, (6267), 5028 states have internal predecessors, (6267), 1273 states have call successors, (1273), 463 states have call predecessors, (1273), 514 states have return successors, (1481), 1276 states have call predecessors, (1481), 1272 states have call successors, (1481) [2022-07-22 23:53:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6709 states to 6709 states and 9021 transitions. [2022-07-22 23:53:18,308 INFO L78 Accepts]: Start accepts. Automaton has 6709 states and 9021 transitions. Word has length 208 [2022-07-22 23:53:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:53:18,308 INFO L495 AbstractCegarLoop]: Abstraction has 6709 states and 9021 transitions. [2022-07-22 23:53:18,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-22 23:53:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6709 states and 9021 transitions. [2022-07-22 23:53:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-22 23:53:18,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:53:18,357 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:53:18,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 23:53:18,357 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:53:18,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:53:18,358 INFO L85 PathProgramCache]: Analyzing trace with hash -217027421, now seen corresponding path program 1 times [2022-07-22 23:53:18,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:53:18,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730526808] [2022-07-22 23:53:18,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:18,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:53:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:53:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:53:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:53:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 23:53:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 23:53:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 23:53:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 23:53:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 23:53:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 23:53:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-22 23:53:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-22 23:53:18,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:53:18,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730526808] [2022-07-22 23:53:18,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730526808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:53:18,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:53:18,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:53:18,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040449351] [2022-07-22 23:53:18,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:53:18,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:53:18,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:53:18,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:53:18,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:53:18,602 INFO L87 Difference]: Start difference. First operand 6709 states and 9021 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-22 23:53:22,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:53:22,561 INFO L93 Difference]: Finished difference Result 14374 states and 20294 transitions. [2022-07-22 23:53:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:53:22,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2022-07-22 23:53:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:53:22,589 INFO L225 Difference]: With dead ends: 14374 [2022-07-22 23:53:22,589 INFO L226 Difference]: Without dead ends: 7712 [2022-07-22 23:53:22,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:53:22,608 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 1137 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:53:22,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 3514 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 23:53:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7712 states. [2022-07-22 23:53:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7712 to 6715. [2022-07-22 23:53:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6715 states, 4924 states have (on average 1.2729488220958571) internal successors, (6268), 5037 states have internal predecessors, (6268), 1270 states have call successors, (1270), 463 states have call predecessors, (1270), 520 states have return successors, (1508), 1273 states have call predecessors, (1508), 1269 states have call successors, (1508) [2022-07-22 23:53:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6715 states to 6715 states and 9046 transitions. [2022-07-22 23:53:23,186 INFO L78 Accepts]: Start accepts. Automaton has 6715 states and 9046 transitions. Word has length 208 [2022-07-22 23:53:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:53:23,187 INFO L495 AbstractCegarLoop]: Abstraction has 6715 states and 9046 transitions. [2022-07-22 23:53:23,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-22 23:53:23,187 INFO L276 IsEmpty]: Start isEmpty. Operand 6715 states and 9046 transitions. [2022-07-22 23:53:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-22 23:53:23,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:53:23,201 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:53:23,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 23:53:23,202 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:53:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:53:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1327140870, now seen corresponding path program 1 times [2022-07-22 23:53:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:53:23,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057398946] [2022-07-22 23:53:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:23,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:53:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:53:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:53:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:53:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 23:53:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 23:53:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 23:53:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 23:53:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 23:53:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 23:53:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-22 23:53:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-22 23:53:23,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:53:23,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057398946] [2022-07-22 23:53:23,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057398946] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:53:23,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132208532] [2022-07-22 23:53:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:23,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:53:23,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:53:23,820 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:53:23,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 23:53:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:24,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-22 23:53:24,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:53:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-22 23:53:24,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:53:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-22 23:53:25,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132208532] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:53:25,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:53:25,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 12] total 27 [2022-07-22 23:53:25,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226566839] [2022-07-22 23:53:25,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:53:25,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 23:53:25,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:53:25,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 23:53:25,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-07-22 23:53:25,116 INFO L87 Difference]: Start difference. First operand 6715 states and 9046 transitions. Second operand has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) [2022-07-22 23:53:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:53:33,321 INFO L93 Difference]: Finished difference Result 13559 states and 18787 transitions. [2022-07-22 23:53:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 23:53:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) Word has length 208 [2022-07-22 23:53:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:53:33,339 INFO L225 Difference]: With dead ends: 13559 [2022-07-22 23:53:33,339 INFO L226 Difference]: Without dead ends: 7772 [2022-07-22 23:53:33,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 449 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2022-07-22 23:53:33,350 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 1149 mSDsluCounter, 12899 mSDsCounter, 0 mSdLazyCounter, 12543 mSolverCounterSat, 838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 13984 SdHoareTripleChecker+Invalid, 13381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 838 IncrementalHoareTripleChecker+Valid, 12543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:53:33,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 13984 Invalid, 13381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [838 Valid, 12543 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-22 23:53:33,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7772 states. [2022-07-22 23:53:33,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7772 to 6724. [2022-07-22 23:53:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6724 states, 4933 states have (on average 1.272450841273059) internal successors, (6277), 5043 states have internal predecessors, (6277), 1270 states have call successors, (1270), 463 states have call predecessors, (1270), 520 states have return successors, (1508), 1276 states have call predecessors, (1508), 1269 states have call successors, (1508) [2022-07-22 23:53:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 9055 transitions. [2022-07-22 23:53:33,851 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 9055 transitions. Word has length 208 [2022-07-22 23:53:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:53:33,851 INFO L495 AbstractCegarLoop]: Abstraction has 6724 states and 9055 transitions. [2022-07-22 23:53:33,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) [2022-07-22 23:53:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 9055 transitions. [2022-07-22 23:53:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-22 23:53:33,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:53:33,863 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:53:33,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 23:53:34,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 23:53:34,079 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:53:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:53:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash -66006893, now seen corresponding path program 1 times [2022-07-22 23:53:34,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:53:34,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272445279] [2022-07-22 23:53:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:34,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:53:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:53:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 23:53:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:53:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:53:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:53:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:53:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:53:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 23:53:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-22 23:53:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 23:53:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:53:34,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272445279] [2022-07-22 23:53:34,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272445279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:53:34,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:53:34,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 23:53:34,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400626879] [2022-07-22 23:53:34,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:53:34,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:53:34,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:53:34,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:53:34,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:53:34,360 INFO L87 Difference]: Start difference. First operand 6724 states and 9055 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (21), 9 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:53:40,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:53:40,807 INFO L93 Difference]: Finished difference Result 15147 states and 21288 transitions. [2022-07-22 23:53:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 23:53:40,807 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (21), 9 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 199 [2022-07-22 23:53:40,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:53:40,837 INFO L225 Difference]: With dead ends: 15147 [2022-07-22 23:53:40,837 INFO L226 Difference]: Without dead ends: 9351 [2022-07-22 23:53:40,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2022-07-22 23:53:40,848 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 3076 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 3324 mSolverCounterSat, 2445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3306 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 5769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2445 IncrementalHoareTripleChecker+Valid, 3324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:53:40,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3306 Valid, 3349 Invalid, 5769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2445 Valid, 3324 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-22 23:53:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9351 states. [2022-07-22 23:53:41,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9351 to 6679. [2022-07-22 23:53:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6679 states, 4900 states have (on average 1.2610204081632652) internal successors, (6179), 5009 states have internal predecessors, (6179), 1263 states have call successors, (1263), 458 states have call predecessors, (1263), 515 states have return successors, (1501), 1270 states have call predecessors, (1501), 1262 states have call successors, (1501) [2022-07-22 23:53:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6679 states to 6679 states and 8943 transitions. [2022-07-22 23:53:41,434 INFO L78 Accepts]: Start accepts. Automaton has 6679 states and 8943 transitions. Word has length 199 [2022-07-22 23:53:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:53:41,434 INFO L495 AbstractCegarLoop]: Abstraction has 6679 states and 8943 transitions. [2022-07-22 23:53:41,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (21), 9 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:53:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 6679 states and 8943 transitions. [2022-07-22 23:53:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 23:53:41,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:53:41,444 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:53:41,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 23:53:41,444 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:53:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:53:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1706002734, now seen corresponding path program 1 times [2022-07-22 23:53:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:53:41,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000487133] [2022-07-22 23:53:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:41,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:53:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:53:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:53:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:53:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:53:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:53:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:53:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:53:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-22 23:53:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-22 23:53:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 23:53:41,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:53:41,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000487133] [2022-07-22 23:53:41,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000487133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:53:41,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:53:41,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 23:53:41,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210418093] [2022-07-22 23:53:41,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:53:41,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:53:41,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:53:41,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:53:41,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:53:41,812 INFO L87 Difference]: Start difference. First operand 6679 states and 8943 transitions. Second operand has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 9 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:53:46,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:53:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:53:48,980 INFO L93 Difference]: Finished difference Result 15069 states and 21107 transitions. [2022-07-22 23:53:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:53:48,981 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 9 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 190 [2022-07-22 23:53:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:53:49,006 INFO L225 Difference]: With dead ends: 15069 [2022-07-22 23:53:49,006 INFO L226 Difference]: Without dead ends: 9302 [2022-07-22 23:53:49,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:53:49,018 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 907 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 4059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:53:49,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 3214 Invalid, 4059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 3587 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-22 23:53:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9302 states. [2022-07-22 23:53:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9302 to 6687. [2022-07-22 23:53:49,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6687 states, 4908 states have (on average 1.2605949470252649) internal successors, (6187), 5017 states have internal predecessors, (6187), 1263 states have call successors, (1263), 458 states have call predecessors, (1263), 515 states have return successors, (1501), 1270 states have call predecessors, (1501), 1262 states have call successors, (1501) [2022-07-22 23:53:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 8951 transitions. [2022-07-22 23:53:49,565 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 8951 transitions. Word has length 190 [2022-07-22 23:53:49,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:53:49,566 INFO L495 AbstractCegarLoop]: Abstraction has 6687 states and 8951 transitions. [2022-07-22 23:53:49,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 9 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:53:49,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 8951 transitions. [2022-07-22 23:53:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-22 23:53:49,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:53:49,574 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:53:49,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 23:53:49,575 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:53:49,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:53:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1553975106, now seen corresponding path program 1 times [2022-07-22 23:53:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:53:49,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252869287] [2022-07-22 23:53:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:53:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:53:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 23:53:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:53:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:49,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:53:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 23:53:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 23:53:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:50,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:53:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:50,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 23:53:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-22 23:53:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 23:53:50,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:53:50,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252869287] [2022-07-22 23:53:50,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252869287] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:53:50,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314967675] [2022-07-22 23:53:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:50,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:53:50,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:53:50,048 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) [2022-07-22 23:53:50,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 23:53:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:50,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 23:53:50,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:53:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 23:53:50,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:53:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 23:53:50,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314967675] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:53:50,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:53:50,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 17 [2022-07-22 23:53:50,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799214072] [2022-07-22 23:53:50,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:53:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 23:53:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:53:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 23:53:50,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-07-22 23:53:50,990 INFO L87 Difference]: Start difference. First operand 6687 states and 8951 transitions. Second operand has 17 states, 17 states have (on average 9.823529411764707) internal successors, (167), 10 states have internal predecessors, (167), 2 states have call successors, (39), 9 states have call predecessors, (39), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 23:53:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:53:58,760 INFO L93 Difference]: Finished difference Result 15117 states and 21203 transitions. [2022-07-22 23:53:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:53:58,760 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.823529411764707) internal successors, (167), 10 states have internal predecessors, (167), 2 states have call successors, (39), 9 states have call predecessors, (39), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 212 [2022-07-22 23:53:58,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:53:58,790 INFO L225 Difference]: With dead ends: 15117 [2022-07-22 23:53:58,790 INFO L226 Difference]: Without dead ends: 9326 [2022-07-22 23:53:58,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-07-22 23:53:58,804 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 1444 mSDsluCounter, 3809 mSDsCounter, 0 mSdLazyCounter, 6408 mSolverCounterSat, 1043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 4838 SdHoareTripleChecker+Invalid, 7451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1043 IncrementalHoareTripleChecker+Valid, 6408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:53:58,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 4838 Invalid, 7451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1043 Valid, 6408 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-07-22 23:53:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9326 states. [2022-07-22 23:53:59,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9326 to 6711. [2022-07-22 23:53:59,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6711 states, 4932 states have (on average 1.2593268450932684) internal successors, (6211), 5041 states have internal predecessors, (6211), 1263 states have call successors, (1263), 458 states have call predecessors, (1263), 515 states have return successors, (1501), 1270 states have call predecessors, (1501), 1262 states have call successors, (1501) [2022-07-22 23:53:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6711 states to 6711 states and 8975 transitions. [2022-07-22 23:53:59,330 INFO L78 Accepts]: Start accepts. Automaton has 6711 states and 8975 transitions. Word has length 212 [2022-07-22 23:53:59,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:53:59,331 INFO L495 AbstractCegarLoop]: Abstraction has 6711 states and 8975 transitions. [2022-07-22 23:53:59,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.823529411764707) internal successors, (167), 10 states have internal predecessors, (167), 2 states have call successors, (39), 9 states have call predecessors, (39), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 23:53:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6711 states and 8975 transitions. [2022-07-22 23:53:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-22 23:53:59,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:53:59,337 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:53:59,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 23:53:59,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:53:59,538 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:53:59,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:53:59,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1037419605, now seen corresponding path program 1 times [2022-07-22 23:53:59,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:53:59,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021663773] [2022-07-22 23:53:59,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:53:59,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:53:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:53:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 23:53:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:53:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:53:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:53:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:53:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:53:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:53:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:53:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 23:53:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:53:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 23:53:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:53:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-22 23:53:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-22 23:53:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:53:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 23:53:59,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:53:59,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021663773] [2022-07-22 23:53:59,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021663773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:53:59,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:53:59,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 23:53:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825206577] [2022-07-22 23:53:59,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:53:59,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:53:59,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:53:59,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:53:59,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:53:59,853 INFO L87 Difference]: Start difference. First operand 6711 states and 8975 transitions. Second operand has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (21), 9 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:54:08,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:54:11,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:54:11,111 INFO L93 Difference]: Finished difference Result 19933 states and 28097 transitions. [2022-07-22 23:54:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 23:54:11,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (21), 9 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 203 [2022-07-22 23:54:11,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:54:11,160 INFO L225 Difference]: With dead ends: 19933 [2022-07-22 23:54:11,161 INFO L226 Difference]: Without dead ends: 14150 [2022-07-22 23:54:11,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2022-07-22 23:54:11,182 INFO L413 NwaCegarLoop]: 1197 mSDtfsCounter, 3069 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 6310 mSolverCounterSat, 1606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 4260 SdHoareTripleChecker+Invalid, 7916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1606 IncrementalHoareTripleChecker+Valid, 6310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:54:11,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3346 Valid, 4260 Invalid, 7916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1606 Valid, 6310 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-07-22 23:54:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2022-07-22 23:54:11,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 9661. [2022-07-22 23:54:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9661 states, 7083 states have (on average 1.2590710151065934) internal successors, (8918), 7238 states have internal predecessors, (8918), 1841 states have call successors, (1841), 655 states have call predecessors, (1841), 736 states have return successors, (2140), 1852 states have call predecessors, (2140), 1840 states have call successors, (2140) [2022-07-22 23:54:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9661 states to 9661 states and 12899 transitions. [2022-07-22 23:54:12,003 INFO L78 Accepts]: Start accepts. Automaton has 9661 states and 12899 transitions. Word has length 203 [2022-07-22 23:54:12,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:54:12,004 INFO L495 AbstractCegarLoop]: Abstraction has 9661 states and 12899 transitions. [2022-07-22 23:54:12,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (21), 9 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:54:12,004 INFO L276 IsEmpty]: Start isEmpty. Operand 9661 states and 12899 transitions. [2022-07-22 23:54:12,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 23:54:12,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:54:12,014 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:54:12,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 23:54:12,015 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:54:12,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:54:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash -913281715, now seen corresponding path program 2 times [2022-07-22 23:54:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:54:12,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674577483] [2022-07-22 23:54:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:54:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:54:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:54:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:54:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:54:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:54:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:54:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:54:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:54:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:54:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 23:54:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:54:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:54:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:54:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:54:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:54:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:54:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:54:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:54:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:54:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 23:54:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:54:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 23:54:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:54:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-22 23:54:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-22 23:54:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:54:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 23:54:12,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:54:12,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674577483] [2022-07-22 23:54:12,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674577483] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:54:12,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131356278] [2022-07-22 23:54:12,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:54:12,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:54:12,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:54:12,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:54:12,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 23:54:14,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:54:14,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:54:14,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1666 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-22 23:54:14,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:54:14,856 INFO L390 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