./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.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 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 00:25:06,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 00:25:06,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 00:25:06,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 00:25:06,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 00:25:06,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 00:25:06,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 00:25:06,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 00:25:06,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 00:25:06,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 00:25:06,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 00:25:06,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 00:25:06,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 00:25:06,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 00:25:06,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 00:25:06,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 00:25:06,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 00:25:06,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 00:25:06,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 00:25:06,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 00:25:06,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 00:25:06,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 00:25:06,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 00:25:06,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 00:25:06,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 00:25:06,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 00:25:06,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 00:25:06,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 00:25:06,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 00:25:06,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 00:25:06,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 00:25:06,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 00:25:06,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 00:25:06,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 00:25:06,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 00:25:06,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 00:25:06,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 00:25:06,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 00:25:06,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 00:25:06,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 00:25:06,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 00:25:06,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 00:25:06,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 00:25:06,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 00:25:06,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 00:25:06,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 00:25:06,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 00:25:06,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 00:25:06,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 00:25:06,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 00:25:06,613 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 00:25:06,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 00:25:06,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 00:25:06,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 00:25:06,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 00:25:06,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 00:25:06,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 00:25:06,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 00:25:06,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 00:25:06,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 00:25:06,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 00:25:06,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 00:25:06,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 00:25:06,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:25:06,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 00:25:06,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 00:25:06,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 00:25:06,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 00:25:06,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 00:25:06,616 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 00:25:06,616 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 00:25:06,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 00:25:06,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 00:25:06,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 [2021-11-17 00:25:06,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 00:25:06,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 00:25:06,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 00:25:06,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 00:25:06,814 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 00:25:06,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2021-11-17 00:25:06,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c2673cb/f90a5b25aac245ddb48bd57432ca8958/FLAG62201b5ea [2021-11-17 00:25:07,417 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 00:25:07,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2021-11-17 00:25:07,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c2673cb/f90a5b25aac245ddb48bd57432ca8958/FLAG62201b5ea [2021-11-17 00:25:07,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c2673cb/f90a5b25aac245ddb48bd57432ca8958 [2021-11-17 00:25:07,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 00:25:07,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 00:25:07,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 00:25:07,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 00:25:07,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 00:25:07,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:25:07" (1/1) ... [2021-11-17 00:25:07,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e44a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:07, skipping insertion in model container [2021-11-17 00:25:07,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:25:07" (1/1) ... [2021-11-17 00:25:07,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 00:25:07,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 00:25:08,238 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2021-11-17 00:25:08,508 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:25:08,532 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 00:25:08,631 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2021-11-17 00:25:08,719 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:25:08,775 INFO L208 MainTranslator]: Completed translation [2021-11-17 00:25:08,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08 WrapperNode [2021-11-17 00:25:08,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 00:25:08,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 00:25:08,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 00:25:08,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 00:25:08,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (1/1) ... [2021-11-17 00:25:08,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (1/1) ... [2021-11-17 00:25:08,911 INFO L137 Inliner]: procedures = 175, calls = 797, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 2201 [2021-11-17 00:25:08,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 00:25:08,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 00:25:08,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 00:25:08,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 00:25:08,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (1/1) ... [2021-11-17 00:25:08,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (1/1) ... [2021-11-17 00:25:08,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (1/1) ... [2021-11-17 00:25:08,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (1/1) ... [2021-11-17 00:25:08,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (1/1) ... [2021-11-17 00:25:08,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (1/1) ... [2021-11-17 00:25:09,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (1/1) ... [2021-11-17 00:25:09,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 00:25:09,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 00:25:09,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 00:25:09,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 00:25:09,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (1/1) ... [2021-11-17 00:25:09,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:25:09,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:25:09,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 00:25:09,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 00:25:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-17 00:25:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-17 00:25:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-17 00:25:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-17 00:25:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2021-11-17 00:25:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2021-11-17 00:25:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_15 [2021-11-17 00:25:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_15 [2021-11-17 00:25:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 00:25:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-11-17 00:25:09,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-11-17 00:25:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 00:25:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 00:25:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-11-17 00:25:09,112 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-11-17 00:25:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 00:25:09,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 00:25:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 00:25:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-17 00:25:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-17 00:25:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-17 00:25:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-17 00:25:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-17 00:25:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-17 00:25:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 00:25:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 00:25:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-17 00:25:09,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-17 00:25:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 00:25:09,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 00:25:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-17 00:25:09,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-17 00:25:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_read_bulk_callback [2021-11-17 00:25:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_read_bulk_callback [2021-11-17 00:25:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-11-17 00:25:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-11-17 00:25:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-11-17 00:25:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-11-17 00:25:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 00:25:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 00:25:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 00:25:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 00:25:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 00:25:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 00:25:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 00:25:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 00:25:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 00:25:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-17 00:25:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-17 00:25:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 00:25:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-11-17 00:25:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-11-17 00:25:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-11-17 00:25:09,118 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-11-17 00:25:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 00:25:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-17 00:25:09,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-17 00:25:09,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 00:25:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 00:25:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:25:09,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:25:09,120 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-11-17 00:25:09,120 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-11-17 00:25:09,121 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-11-17 00:25:09,121 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-11-17 00:25:09,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 00:25:09,121 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-17 00:25:09,121 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-17 00:25:09,121 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-17 00:25:09,121 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-17 00:25:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-11-17 00:25:09,122 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-11-17 00:25:09,122 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2021-11-17 00:25:09,122 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2021-11-17 00:25:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 00:25:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 00:25:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_disconnect [2021-11-17 00:25:09,123 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_disconnect [2021-11-17 00:25:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-17 00:25:09,123 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-17 00:25:09,123 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-17 00:25:09,123 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-17 00:25:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-11-17 00:25:09,124 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-11-17 00:25:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-17 00:25:09,124 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-17 00:25:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-17 00:25:09,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-17 00:25:09,124 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-11-17 00:25:09,125 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-11-17 00:25:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 00:25:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-11-17 00:25:09,126 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-11-17 00:25:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-17 00:25:09,126 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-17 00:25:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 00:25:09,127 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_send_cmd [2021-11-17 00:25:09,127 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_send_cmd [2021-11-17 00:25:09,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 00:25:09,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 00:25:09,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 00:25:09,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 00:25:09,128 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_cmd_open [2021-11-17 00:25:09,128 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_cmd_open [2021-11-17 00:25:09,509 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 00:25:09,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 00:25:09,675 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 00:25:10,167 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-11-17 00:25:12,447 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 00:25:12,466 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 00:25:12,466 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 00:25:12,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:25:12 BoogieIcfgContainer [2021-11-17 00:25:12,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 00:25:12,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 00:25:12,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 00:25:12,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 00:25:12,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:25:07" (1/3) ... [2021-11-17 00:25:12,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f2e4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:25:12, skipping insertion in model container [2021-11-17 00:25:12,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:25:08" (2/3) ... [2021-11-17 00:25:12,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f2e4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:25:12, skipping insertion in model container [2021-11-17 00:25:12,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:25:12" (3/3) ... [2021-11-17 00:25:12,480 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2021-11-17 00:25:12,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 00:25:12,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 00:25:12,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 00:25:12,539 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 00:25:12,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 00:25:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 653 states, 477 states have (on average 1.329140461215933) internal successors, (634), 496 states have internal predecessors, (634), 132 states have call successors, (132), 44 states have call predecessors, (132), 42 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2021-11-17 00:25:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-17 00:25:12,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:12,586 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:25:12,587 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:12,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:12,591 INFO L85 PathProgramCache]: Analyzing trace with hash -583991121, now seen corresponding path program 1 times [2021-11-17 00:25:12,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:12,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184114933] [2021-11-17 00:25:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:12,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-17 00:25:12,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:12,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184114933] [2021-11-17 00:25:12,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184114933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:12,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:25:12,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:25:12,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050145773] [2021-11-17 00:25:12,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:12,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:25:12,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:12,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:25:12,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:25:12,971 INFO L87 Difference]: Start difference. First operand has 653 states, 477 states have (on average 1.329140461215933) internal successors, (634), 496 states have internal predecessors, (634), 132 states have call successors, (132), 44 states have call predecessors, (132), 42 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-11-17 00:25:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:15,437 INFO L93 Difference]: Finished difference Result 2021 states and 2855 transitions. [2021-11-17 00:25:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:25:15,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 28 [2021-11-17 00:25:15,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:15,456 INFO L225 Difference]: With dead ends: 2021 [2021-11-17 00:25:15,457 INFO L226 Difference]: Without dead ends: 1349 [2021-11-17 00:25:15,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:25:15,465 INFO L933 BasicCegarLoop]: 960 mSDtfsCounter, 1115 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:15,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 2095 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-17 00:25:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2021-11-17 00:25:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1243. [2021-11-17 00:25:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 917 states have (on average 1.311886586695747) internal successors, (1203), 935 states have internal predecessors, (1203), 243 states have call successors, (243), 83 states have call predecessors, (243), 82 states have return successors, (238), 236 states have call predecessors, (238), 238 states have call successors, (238) [2021-11-17 00:25:15,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1684 transitions. [2021-11-17 00:25:15,576 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1684 transitions. Word has length 28 [2021-11-17 00:25:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:15,576 INFO L470 AbstractCegarLoop]: Abstraction has 1243 states and 1684 transitions. [2021-11-17 00:25:15,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-11-17 00:25:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1684 transitions. [2021-11-17 00:25:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-17 00:25:15,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:15,579 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:25:15,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 00:25:15,580 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1373222682, now seen corresponding path program 1 times [2021-11-17 00:25:15,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:15,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324720182] [2021-11-17 00:25:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:15,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-17 00:25:15,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:15,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324720182] [2021-11-17 00:25:15,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324720182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:15,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:25:15,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:25:15,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201557994] [2021-11-17 00:25:15,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:15,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:25:15,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:15,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:25:15,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:25:15,720 INFO L87 Difference]: Start difference. First operand 1243 states and 1684 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:25:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:18,265 INFO L93 Difference]: Finished difference Result 3926 states and 5435 transitions. [2021-11-17 00:25:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:25:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-11-17 00:25:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:18,277 INFO L225 Difference]: With dead ends: 3926 [2021-11-17 00:25:18,277 INFO L226 Difference]: Without dead ends: 2690 [2021-11-17 00:25:18,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:25:18,282 INFO L933 BasicCegarLoop]: 1251 mSDtfsCounter, 1019 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:18,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 2501 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-17 00:25:18,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-11-17 00:25:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2468. [2021-11-17 00:25:18,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 1824 states have (on average 1.3103070175438596) internal successors, (2390), 1856 states have internal predecessors, (2390), 479 states have call successors, (479), 165 states have call predecessors, (479), 164 states have return successors, (488), 470 states have call predecessors, (488), 474 states have call successors, (488) [2021-11-17 00:25:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3357 transitions. [2021-11-17 00:25:18,413 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3357 transitions. Word has length 38 [2021-11-17 00:25:18,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:18,414 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 3357 transitions. [2021-11-17 00:25:18,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:25:18,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3357 transitions. [2021-11-17 00:25:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-17 00:25:18,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:18,419 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:25:18,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 00:25:18,420 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:18,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:18,420 INFO L85 PathProgramCache]: Analyzing trace with hash 379434109, now seen corresponding path program 1 times [2021-11-17 00:25:18,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:18,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342726147] [2021-11-17 00:25:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:18,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:18,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-17 00:25:18,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:18,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342726147] [2021-11-17 00:25:18,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342726147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:18,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:25:18,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:25:18,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485042236] [2021-11-17 00:25:18,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:18,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:25:18,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:25:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:25:18,560 INFO L87 Difference]: Start difference. First operand 2468 states and 3357 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:25:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:20,103 INFO L93 Difference]: Finished difference Result 2682 states and 3736 transitions. [2021-11-17 00:25:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 00:25:20,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-11-17 00:25:20,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:20,115 INFO L225 Difference]: With dead ends: 2682 [2021-11-17 00:25:20,115 INFO L226 Difference]: Without dead ends: 2679 [2021-11-17 00:25:20,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:25:20,118 INFO L933 BasicCegarLoop]: 823 mSDtfsCounter, 948 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:20,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 1190 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-17 00:25:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2021-11-17 00:25:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2467. [2021-11-17 00:25:20,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 1824 states have (on average 1.3097587719298245) internal successors, (2389), 1855 states have internal predecessors, (2389), 478 states have call successors, (478), 165 states have call predecessors, (478), 164 states have return successors, (488), 470 states have call predecessors, (488), 474 states have call successors, (488) [2021-11-17 00:25:20,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3355 transitions. [2021-11-17 00:25:20,235 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3355 transitions. Word has length 39 [2021-11-17 00:25:20,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:20,236 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 3355 transitions. [2021-11-17 00:25:20,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:25:20,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3355 transitions. [2021-11-17 00:25:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-17 00:25:20,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:20,239 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:25:20,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 00:25:20,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:20,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:20,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1122775351, now seen corresponding path program 1 times [2021-11-17 00:25:20,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:20,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711841302] [2021-11-17 00:25:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:20,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:20,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:20,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:20,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-17 00:25:20,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:20,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711841302] [2021-11-17 00:25:20,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711841302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:20,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:25:20,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:25:20,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079098197] [2021-11-17 00:25:20,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:20,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:25:20,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:20,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:25:20,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:25:20,350 INFO L87 Difference]: Start difference. First operand 2467 states and 3355 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:25:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:22,411 INFO L93 Difference]: Finished difference Result 2681 states and 3734 transitions. [2021-11-17 00:25:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 00:25:22,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-11-17 00:25:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:22,422 INFO L225 Difference]: With dead ends: 2681 [2021-11-17 00:25:22,422 INFO L226 Difference]: Without dead ends: 2678 [2021-11-17 00:25:22,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:25:22,427 INFO L933 BasicCegarLoop]: 826 mSDtfsCounter, 943 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:22,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 1193 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-17 00:25:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-11-17 00:25:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2466. [2021-11-17 00:25:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 1824 states have (on average 1.3092105263157894) internal successors, (2388), 1854 states have internal predecessors, (2388), 477 states have call successors, (477), 165 states have call predecessors, (477), 164 states have return successors, (488), 470 states have call predecessors, (488), 474 states have call successors, (488) [2021-11-17 00:25:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3353 transitions. [2021-11-17 00:25:22,503 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3353 transitions. Word has length 40 [2021-11-17 00:25:22,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:22,505 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 3353 transitions. [2021-11-17 00:25:22,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:25:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3353 transitions. [2021-11-17 00:25:22,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-17 00:25:22,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:22,506 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:25:22,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 00:25:22,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash -446623488, now seen corresponding path program 1 times [2021-11-17 00:25:22,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:22,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794939457] [2021-11-17 00:25:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:22,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:22,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:22,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:22,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-17 00:25:22,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:22,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794939457] [2021-11-17 00:25:22,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794939457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:22,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:25:22,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:25:22,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81526235] [2021-11-17 00:25:22,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:22,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:25:22,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:25:22,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:25:22,623 INFO L87 Difference]: Start difference. First operand 2466 states and 3353 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:25:24,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:24,365 INFO L93 Difference]: Finished difference Result 2680 states and 3732 transitions. [2021-11-17 00:25:24,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 00:25:24,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2021-11-17 00:25:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:24,376 INFO L225 Difference]: With dead ends: 2680 [2021-11-17 00:25:24,376 INFO L226 Difference]: Without dead ends: 2677 [2021-11-17 00:25:24,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:25:24,379 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 941 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:24,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 1188 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-17 00:25:24,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-11-17 00:25:24,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2465. [2021-11-17 00:25:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 1824 states have (on average 1.3086622807017543) internal successors, (2387), 1853 states have internal predecessors, (2387), 476 states have call successors, (476), 165 states have call predecessors, (476), 164 states have return successors, (488), 470 states have call predecessors, (488), 474 states have call successors, (488) [2021-11-17 00:25:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3351 transitions. [2021-11-17 00:25:24,450 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3351 transitions. Word has length 41 [2021-11-17 00:25:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:24,450 INFO L470 AbstractCegarLoop]: Abstraction has 2465 states and 3351 transitions. [2021-11-17 00:25:24,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:25:24,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3351 transitions. [2021-11-17 00:25:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-17 00:25:24,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:24,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:25:24,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 00:25:24,452 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash -960747348, now seen corresponding path program 1 times [2021-11-17 00:25:24,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:24,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163740406] [2021-11-17 00:25:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:24,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:24,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:24,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:24,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-17 00:25:24,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:24,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163740406] [2021-11-17 00:25:24,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163740406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:24,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:25:24,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:25:24,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610197426] [2021-11-17 00:25:24,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:24,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:25:24,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:25:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:25:24,559 INFO L87 Difference]: Start difference. First operand 2465 states and 3351 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:25:26,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:26,433 INFO L93 Difference]: Finished difference Result 2679 states and 3730 transitions. [2021-11-17 00:25:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 00:25:26,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2021-11-17 00:25:26,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:26,444 INFO L225 Difference]: With dead ends: 2679 [2021-11-17 00:25:26,444 INFO L226 Difference]: Without dead ends: 2667 [2021-11-17 00:25:26,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:25:26,446 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 938 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:26,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 1185 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-17 00:25:26,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2021-11-17 00:25:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2455. [2021-11-17 00:25:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 1815 states have (on average 1.3079889807162535) internal successors, (2374), 1843 states have internal predecessors, (2374), 475 states have call successors, (475), 165 states have call predecessors, (475), 164 states have return successors, (488), 470 states have call predecessors, (488), 474 states have call successors, (488) [2021-11-17 00:25:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3337 transitions. [2021-11-17 00:25:26,521 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3337 transitions. Word has length 42 [2021-11-17 00:25:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:26,522 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 3337 transitions. [2021-11-17 00:25:26,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:25:26,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3337 transitions. [2021-11-17 00:25:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-17 00:25:26,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:26,527 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:25:26,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 00:25:26,527 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash -64547374, now seen corresponding path program 1 times [2021-11-17 00:25:26,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:26,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760125971] [2021-11-17 00:25:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:26,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:26,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-17 00:25:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 00:25:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:26,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:25:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:26,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:25:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:26,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 00:25:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:26,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-17 00:25:26,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:26,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760125971] [2021-11-17 00:25:26,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760125971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:26,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:25:26,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:25:26,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803956666] [2021-11-17 00:25:26,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:26,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:25:26,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:26,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:25:26,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:25:26,645 INFO L87 Difference]: Start difference. First operand 2455 states and 3337 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, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-17 00:25:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:28,784 INFO L93 Difference]: Finished difference Result 6012 states and 8211 transitions. [2021-11-17 00:25:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 00:25:28,785 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, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2021-11-17 00:25:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:28,800 INFO L225 Difference]: With dead ends: 6012 [2021-11-17 00:25:28,800 INFO L226 Difference]: Without dead ends: 3564 [2021-11-17 00:25:28,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:25:28,807 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 920 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:28,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 2021 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-17 00:25:28,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2021-11-17 00:25:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3248. [2021-11-17 00:25:28,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3248 states, 2412 states have (on average 1.291044776119403) internal successors, (3114), 2448 states have internal predecessors, (3114), 598 states have call successors, (598), 232 states have call predecessors, (598), 237 states have return successors, (629), 595 states have call predecessors, (629), 597 states have call successors, (629) [2021-11-17 00:25:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 4341 transitions. [2021-11-17 00:25:28,913 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 4341 transitions. Word has length 82 [2021-11-17 00:25:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:28,913 INFO L470 AbstractCegarLoop]: Abstraction has 3248 states and 4341 transitions. [2021-11-17 00:25:28,914 INFO L471 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, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-17 00:25:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 4341 transitions. [2021-11-17 00:25:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-17 00:25:28,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:28,917 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:25:28,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 00:25:28,918 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:28,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:28,918 INFO L85 PathProgramCache]: Analyzing trace with hash 66281665, now seen corresponding path program 1 times [2021-11-17 00:25:28,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:28,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096238219] [2021-11-17 00:25:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:28,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:28,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:28,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:29,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:25:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 00:25:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:29,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:25:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:29,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:25:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:29,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:25:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-17 00:25:29,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:29,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096238219] [2021-11-17 00:25:29,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096238219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:29,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:25:29,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:25:29,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658969111] [2021-11-17 00:25:29,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:29,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:25:29,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:29,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:25:29,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:25:29,069 INFO L87 Difference]: Start difference. First operand 3248 states and 4341 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-11-17 00:25:35,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:35,221 INFO L93 Difference]: Finished difference Result 7644 states and 10313 transitions. [2021-11-17 00:25:35,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 00:25:35,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 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 98 [2021-11-17 00:25:35,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:35,238 INFO L225 Difference]: With dead ends: 7644 [2021-11-17 00:25:35,239 INFO L226 Difference]: Without dead ends: 4410 [2021-11-17 00:25:35,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:25:35,248 INFO L933 BasicCegarLoop]: 1048 mSDtfsCounter, 619 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:35,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 3009 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-17 00:25:35,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4410 states. [2021-11-17 00:25:35,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4410 to 4058. [2021-11-17 00:25:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4058 states, 3036 states have (on average 1.2832674571805007) internal successors, (3896), 3076 states have internal predecessors, (3896), 718 states have call successors, (718), 298 states have call predecessors, (718), 303 states have return successors, (749), 715 states have call predecessors, (749), 717 states have call successors, (749) [2021-11-17 00:25:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 5363 transitions. [2021-11-17 00:25:35,428 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 5363 transitions. Word has length 98 [2021-11-17 00:25:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:35,428 INFO L470 AbstractCegarLoop]: Abstraction has 4058 states and 5363 transitions. [2021-11-17 00:25:35,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-11-17 00:25:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 5363 transitions. [2021-11-17 00:25:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-17 00:25:35,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:35,436 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2021-11-17 00:25:35,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 00:25:35,437 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:35,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1944227263, now seen corresponding path program 1 times [2021-11-17 00:25:35,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:35,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431576701] [2021-11-17 00:25:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:35,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:35,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:25:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:35,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 00:25:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:35,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 00:25:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:35,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:25:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:35,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:25:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-17 00:25:35,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:35,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431576701] [2021-11-17 00:25:35,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431576701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:25:35,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573907590] [2021-11-17 00:25:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:35,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:25:35,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:25:35,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:25:35,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 00:25:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:35,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:25:35,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:25:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-17 00:25:36,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:25:36,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573907590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:36,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:25:36,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-17 00:25:36,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176488662] [2021-11-17 00:25:36,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:36,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:25:36,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:36,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:25:36,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:25:36,122 INFO L87 Difference]: Start difference. First operand 4058 states and 5363 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 00:25:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:36,333 INFO L93 Difference]: Finished difference Result 9784 states and 12886 transitions. [2021-11-17 00:25:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:25:36,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2021-11-17 00:25:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:36,358 INFO L225 Difference]: With dead ends: 9784 [2021-11-17 00:25:36,358 INFO L226 Difference]: Without dead ends: 5740 [2021-11-17 00:25:36,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:25:36,370 INFO L933 BasicCegarLoop]: 965 mSDtfsCounter, 676 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:36,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 1662 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:25:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2021-11-17 00:25:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5732. [2021-11-17 00:25:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 4316 states have (on average 1.2919369786839667) internal successors, (5576), 4380 states have internal predecessors, (5576), 952 states have call successors, (952), 452 states have call predecessors, (952), 463 states have return successors, (997), 947 states have call predecessors, (997), 951 states have call successors, (997) [2021-11-17 00:25:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 7525 transitions. [2021-11-17 00:25:36,537 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 7525 transitions. Word has length 110 [2021-11-17 00:25:36,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:36,538 INFO L470 AbstractCegarLoop]: Abstraction has 5732 states and 7525 transitions. [2021-11-17 00:25:36,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 00:25:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 7525 transitions. [2021-11-17 00:25:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-17 00:25:36,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:36,582 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2021-11-17 00:25:36,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-17 00:25:36,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:25:36,795 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:36,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1582638069, now seen corresponding path program 1 times [2021-11-17 00:25:36,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:36,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989325806] [2021-11-17 00:25:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:36,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:25:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:25:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:25:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:25:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:25:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:25:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 00:25:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-17 00:25:36,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:36,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989325806] [2021-11-17 00:25:36,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989325806] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:25:36,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516765008] [2021-11-17 00:25:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:36,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:25:36,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:25:36,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:25:36,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 00:25:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:37,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:25:37,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:25:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-17 00:25:37,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:25:37,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516765008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:37,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:25:37,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2021-11-17 00:25:37,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911306774] [2021-11-17 00:25:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:37,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:25:37,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:37,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:25:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:25:37,605 INFO L87 Difference]: Start difference. First operand 5732 states and 7525 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-17 00:25:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:38,435 INFO L93 Difference]: Finished difference Result 17170 states and 22542 transitions. [2021-11-17 00:25:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 00:25:38,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 121 [2021-11-17 00:25:38,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:38,494 INFO L225 Difference]: With dead ends: 17170 [2021-11-17 00:25:38,494 INFO L226 Difference]: Without dead ends: 17162 [2021-11-17 00:25:38,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:25:38,505 INFO L933 BasicCegarLoop]: 1263 mSDtfsCounter, 1624 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:38,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1624 Valid, 3065 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-17 00:25:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17162 states. [2021-11-17 00:25:39,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17162 to 17132. [2021-11-17 00:25:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17132 states, 12896 states have (on average 1.2926488833746899) internal successors, (16670), 13104 states have internal predecessors, (16670), 2848 states have call successors, (2848), 1352 states have call predecessors, (2848), 1387 states have return successors, (2985), 2819 states have call predecessors, (2985), 2847 states have call successors, (2985) [2021-11-17 00:25:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17132 states to 17132 states and 22503 transitions. [2021-11-17 00:25:39,078 INFO L78 Accepts]: Start accepts. Automaton has 17132 states and 22503 transitions. Word has length 121 [2021-11-17 00:25:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:39,078 INFO L470 AbstractCegarLoop]: Abstraction has 17132 states and 22503 transitions. [2021-11-17 00:25:39,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-17 00:25:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 17132 states and 22503 transitions. [2021-11-17 00:25:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-17 00:25:39,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:39,092 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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] [2021-11-17 00:25:39,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-17 00:25:39,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-17 00:25:39,308 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:39,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash 377135426, now seen corresponding path program 1 times [2021-11-17 00:25:39,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:39,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342787089] [2021-11-17 00:25:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:39,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:25:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:25:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:25:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:25:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:25:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:25:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 00:25:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 00:25:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-17 00:25:39,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:39,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342787089] [2021-11-17 00:25:39,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342787089] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:25:39,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856514664] [2021-11-17 00:25:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:39,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:25:39,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:25:39,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:25:39,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 00:25:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:39,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:25:39,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:25:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-17 00:25:40,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:25:40,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856514664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:40,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:25:40,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-11-17 00:25:40,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585731136] [2021-11-17 00:25:40,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:40,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:25:40,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:40,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:25:40,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:25:40,150 INFO L87 Difference]: Start difference. First operand 17132 states and 22503 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-17 00:25:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:40,733 INFO L93 Difference]: Finished difference Result 26112 states and 34294 transitions. [2021-11-17 00:25:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:25:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 131 [2021-11-17 00:25:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:40,754 INFO L225 Difference]: With dead ends: 26112 [2021-11-17 00:25:40,755 INFO L226 Difference]: Without dead ends: 8446 [2021-11-17 00:25:40,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:25:40,785 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 753 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:40,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 1277 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-17 00:25:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8446 states. [2021-11-17 00:25:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8446 to 8446. [2021-11-17 00:25:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8446 states, 6351 states have (on average 1.2890883325460558) internal successors, (8187), 6455 states have internal predecessors, (8187), 1408 states have call successors, (1408), 669 states have call predecessors, (1408), 686 states have return successors, (1476), 1393 states have call predecessors, (1476), 1407 states have call successors, (1476) [2021-11-17 00:25:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8446 states to 8446 states and 11071 transitions. [2021-11-17 00:25:41,039 INFO L78 Accepts]: Start accepts. Automaton has 8446 states and 11071 transitions. Word has length 131 [2021-11-17 00:25:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:41,039 INFO L470 AbstractCegarLoop]: Abstraction has 8446 states and 11071 transitions. [2021-11-17 00:25:41,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-17 00:25:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8446 states and 11071 transitions. [2021-11-17 00:25:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-17 00:25:41,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:41,048 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:25:41,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-17 00:25:41,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:25:41,263 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:41,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2142892748, now seen corresponding path program 1 times [2021-11-17 00:25:41,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:41,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017425007] [2021-11-17 00:25:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:41,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:25:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:25:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:25:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:25:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:25:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:25:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 00:25:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-17 00:25:41,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:41,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017425007] [2021-11-17 00:25:41,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017425007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:25:41,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972667948] [2021-11-17 00:25:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:41,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:25:41,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:25:41,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:25:41,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 00:25:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:41,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:25:41,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:25:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-17 00:25:41,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:25:41,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972667948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:41,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:25:41,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-17 00:25:41,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151651204] [2021-11-17 00:25:41,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:41,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:25:41,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:41,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:25:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:25:42,000 INFO L87 Difference]: Start difference. First operand 8446 states and 11071 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-17 00:25:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:42,375 INFO L93 Difference]: Finished difference Result 16256 states and 21353 transitions. [2021-11-17 00:25:42,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:25:42,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 133 [2021-11-17 00:25:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:42,402 INFO L225 Difference]: With dead ends: 16256 [2021-11-17 00:25:42,402 INFO L226 Difference]: Without dead ends: 8454 [2021-11-17 00:25:42,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:25:42,462 INFO L933 BasicCegarLoop]: 1312 mSDtfsCounter, 675 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:42,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1984 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 00:25:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8454 states. [2021-11-17 00:25:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8454 to 8446. [2021-11-17 00:25:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8446 states, 6351 states have (on average 1.285781766650921) internal successors, (8166), 6455 states have internal predecessors, (8166), 1408 states have call successors, (1408), 669 states have call predecessors, (1408), 686 states have return successors, (1476), 1393 states have call predecessors, (1476), 1407 states have call successors, (1476) [2021-11-17 00:25:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8446 states to 8446 states and 11050 transitions. [2021-11-17 00:25:42,695 INFO L78 Accepts]: Start accepts. Automaton has 8446 states and 11050 transitions. Word has length 133 [2021-11-17 00:25:42,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:42,695 INFO L470 AbstractCegarLoop]: Abstraction has 8446 states and 11050 transitions. [2021-11-17 00:25:42,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-17 00:25:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 8446 states and 11050 transitions. [2021-11-17 00:25:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-17 00:25:42,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:42,704 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:25:42,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-17 00:25:42,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:25:42,923 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:42,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2090034934, now seen corresponding path program 1 times [2021-11-17 00:25:42,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:42,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222321596] [2021-11-17 00:25:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:42,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:43,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:25:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:43,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:25:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:25:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:25:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:25:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:43,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 00:25:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 00:25:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-17 00:25:43,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:43,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222321596] [2021-11-17 00:25:43,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222321596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:43,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:25:43,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:25:43,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691305397] [2021-11-17 00:25:43,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:43,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:25:43,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:43,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:25:43,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:25:43,146 INFO L87 Difference]: Start difference. First operand 8446 states and 11050 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-17 00:25:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:25:46,487 INFO L93 Difference]: Finished difference Result 17126 states and 22759 transitions. [2021-11-17 00:25:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 00:25:46,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 133 [2021-11-17 00:25:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:25:46,535 INFO L225 Difference]: With dead ends: 17126 [2021-11-17 00:25:46,549 INFO L226 Difference]: Without dead ends: 9324 [2021-11-17 00:25:46,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-17 00:25:46,565 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 383 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:25:46,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 3395 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-17 00:25:46,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9324 states. [2021-11-17 00:25:46,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9324 to 8488. [2021-11-17 00:25:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8488 states, 6381 states have (on average 1.2844381758345087) internal successors, (8196), 6485 states have internal predecessors, (8196), 1414 states have call successors, (1414), 669 states have call predecessors, (1414), 692 states have return successors, (1524), 1405 states have call predecessors, (1524), 1413 states have call successors, (1524) [2021-11-17 00:25:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8488 states to 8488 states and 11134 transitions. [2021-11-17 00:25:46,847 INFO L78 Accepts]: Start accepts. Automaton has 8488 states and 11134 transitions. Word has length 133 [2021-11-17 00:25:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:25:46,847 INFO L470 AbstractCegarLoop]: Abstraction has 8488 states and 11134 transitions. [2021-11-17 00:25:46,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-17 00:25:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 8488 states and 11134 transitions. [2021-11-17 00:25:46,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-17 00:25:46,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:25:46,855 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:25:46,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-17 00:25:46,855 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:25:46,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:25:46,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1621366100, now seen corresponding path program 1 times [2021-11-17 00:25:46,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:25:46,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710711293] [2021-11-17 00:25:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:25:46,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:25:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:25:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:25:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:25:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:25:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:25:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:25:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:25:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:25:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:25:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 00:25:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:25:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-17 00:25:47,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:25:47,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710711293] [2021-11-17 00:25:47,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710711293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:25:47,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:25:47,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-17 00:25:47,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7230900] [2021-11-17 00:25:47,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:25:47,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-17 00:25:47,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:25:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-17 00:25:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:25:47,266 INFO L87 Difference]: Start difference. First operand 8488 states and 11134 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-17 00:26:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:26:00,211 INFO L93 Difference]: Finished difference Result 22289 states and 30596 transitions. [2021-11-17 00:26:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-17 00:26:00,212 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) Word has length 139 [2021-11-17 00:26:00,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:26:00,257 INFO L225 Difference]: With dead ends: 22289 [2021-11-17 00:26:00,258 INFO L226 Difference]: Without dead ends: 14445 [2021-11-17 00:26:00,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2021-11-17 00:26:00,277 INFO L933 BasicCegarLoop]: 1505 mSDtfsCounter, 2985 mSDsluCounter, 12476 mSDsCounter, 0 mSdLazyCounter, 7063 mSolverCounterSat, 1067 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 13981 SdHoareTripleChecker+Invalid, 8130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1067 IncrementalHoareTripleChecker+Valid, 7063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-17 00:26:00,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3136 Valid, 13981 Invalid, 8130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1067 Valid, 7063 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2021-11-17 00:26:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14445 states. [2021-11-17 00:26:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14445 to 8488. [2021-11-17 00:26:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8488 states, 6381 states have (on average 1.2839680300893277) internal successors, (8193), 6485 states have internal predecessors, (8193), 1414 states have call successors, (1414), 669 states have call predecessors, (1414), 692 states have return successors, (1524), 1405 states have call predecessors, (1524), 1413 states have call successors, (1524) [2021-11-17 00:26:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8488 states to 8488 states and 11131 transitions. [2021-11-17 00:26:00,731 INFO L78 Accepts]: Start accepts. Automaton has 8488 states and 11131 transitions. Word has length 139 [2021-11-17 00:26:00,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:26:00,733 INFO L470 AbstractCegarLoop]: Abstraction has 8488 states and 11131 transitions. [2021-11-17 00:26:00,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-17 00:26:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 8488 states and 11131 transitions. [2021-11-17 00:26:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-17 00:26:00,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:26:00,744 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:26:00,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-17 00:26:00,744 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:26:00,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:26:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash -929099763, now seen corresponding path program 1 times [2021-11-17 00:26:00,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:26:00,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658795778] [2021-11-17 00:26:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:26:00,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:26:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:26:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 00:26:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:26:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-17 00:26:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:26:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:26:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 00:26:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:26:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:26:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-17 00:26:00,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:26:00,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658795778] [2021-11-17 00:26:00,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658795778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:26:00,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:26:00,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:26:00,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128942597] [2021-11-17 00:26:00,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:26:00,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:26:00,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:26:00,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:26:00,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:26:00,880 INFO L87 Difference]: Start difference. First operand 8488 states and 11131 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 00:26:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:26:06,696 INFO L93 Difference]: Finished difference Result 27108 states and 37660 transitions. [2021-11-17 00:26:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 00:26:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 152 [2021-11-17 00:26:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:26:06,746 INFO L225 Difference]: With dead ends: 27108 [2021-11-17 00:26:06,746 INFO L226 Difference]: Without dead ends: 18623 [2021-11-17 00:26:06,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-17 00:26:06,767 INFO L933 BasicCegarLoop]: 1106 mSDtfsCounter, 2871 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 1818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 3492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1818 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-17 00:26:06,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2984 Valid, 2539 Invalid, 3492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1818 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-17 00:26:06,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18623 states. [2021-11-17 00:26:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18623 to 13998. [2021-11-17 00:26:07,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13998 states, 10517 states have (on average 1.2945706950651326) internal successors, (13615), 10705 states have internal predecessors, (13615), 2308 states have call successors, (2308), 1125 states have call predecessors, (2308), 1172 states have return successors, (2493), 2299 states have call predecessors, (2493), 2307 states have call successors, (2493) [2021-11-17 00:26:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13998 states to 13998 states and 18416 transitions. [2021-11-17 00:26:07,509 INFO L78 Accepts]: Start accepts. Automaton has 13998 states and 18416 transitions. Word has length 152 [2021-11-17 00:26:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:26:07,509 INFO L470 AbstractCegarLoop]: Abstraction has 13998 states and 18416 transitions. [2021-11-17 00:26:07,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 00:26:07,509 INFO L276 IsEmpty]: Start isEmpty. Operand 13998 states and 18416 transitions. [2021-11-17 00:26:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-17 00:26:07,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:26:07,523 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:26:07,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-17 00:26:07,523 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:26:07,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:26:07,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1936874969, now seen corresponding path program 2 times [2021-11-17 00:26:07,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:26:07,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399674359] [2021-11-17 00:26:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:26:07,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:26:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:26:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:26:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:26:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 00:26:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:26:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:26:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 00:26:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 00:26:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:26:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-17 00:26:07,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:26:07,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399674359] [2021-11-17 00:26:07,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399674359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:26:07,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:26:07,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:26:07,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109765197] [2021-11-17 00:26:07,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:26:07,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:26:07,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:26:07,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:26:07,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:26:07,659 INFO L87 Difference]: Start difference. First operand 13998 states and 18416 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-17 00:26:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:26:15,481 INFO L93 Difference]: Finished difference Result 35217 states and 48667 transitions. [2021-11-17 00:26:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 00:26:15,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 152 [2021-11-17 00:26:15,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:26:15,546 INFO L225 Difference]: With dead ends: 35217 [2021-11-17 00:26:15,546 INFO L226 Difference]: Without dead ends: 21237 [2021-11-17 00:26:15,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-17 00:26:15,579 INFO L933 BasicCegarLoop]: 1233 mSDtfsCounter, 1880 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 2572 mSolverCounterSat, 1143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 3552 SdHoareTripleChecker+Invalid, 3715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1143 IncrementalHoareTripleChecker+Valid, 2572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-17 00:26:15,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 3552 Invalid, 3715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1143 Valid, 2572 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-17 00:26:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21237 states. [2021-11-17 00:26:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21237 to 15486. [2021-11-17 00:26:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15486 states, 11692 states have (on average 1.297981525829627) internal successors, (15176), 11895 states have internal predecessors, (15176), 2491 states have call successors, (2491), 1247 states have call predecessors, (2491), 1302 states have return successors, (2701), 2490 states have call predecessors, (2701), 2490 states have call successors, (2701) [2021-11-17 00:26:16,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15486 states to 15486 states and 20368 transitions. [2021-11-17 00:26:16,533 INFO L78 Accepts]: Start accepts. Automaton has 15486 states and 20368 transitions. Word has length 152 [2021-11-17 00:26:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:26:16,534 INFO L470 AbstractCegarLoop]: Abstraction has 15486 states and 20368 transitions. [2021-11-17 00:26:16,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-17 00:26:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 15486 states and 20368 transitions. [2021-11-17 00:26:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-17 00:26:16,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:26:16,543 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 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] [2021-11-17 00:26:16,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-17 00:26:16,544 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:26:16,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:26:16,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1503412519, now seen corresponding path program 1 times [2021-11-17 00:26:16,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:26:16,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35258246] [2021-11-17 00:26:16,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:26:16,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:26:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:16,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:16,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:26:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:26:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:26:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:26:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:26:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:26:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:17,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:26:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:26:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:17,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 00:26:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 00:26:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-17 00:26:17,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:26:17,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35258246] [2021-11-17 00:26:17,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35258246] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:26:17,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216704314] [2021-11-17 00:26:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:26:17,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:26:17,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:26:17,130 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:26:17,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 00:26:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:17,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-17 00:26:17,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:26:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-17 00:26:18,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:26:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-17 00:26:18,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216704314] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-17 00:26:18,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-17 00:26:18,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19, 16] total 29 [2021-11-17 00:26:18,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125995682] [2021-11-17 00:26:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:26:18,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 00:26:18,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:26:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 00:26:18,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2021-11-17 00:26:18,847 INFO L87 Difference]: Start difference. First operand 15486 states and 20368 transitions. Second operand has 11 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-17 00:26:23,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:26:23,959 INFO L93 Difference]: Finished difference Result 38750 states and 51006 transitions. [2021-11-17 00:26:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 00:26:23,960 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 157 [2021-11-17 00:26:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:26:24,021 INFO L225 Difference]: With dead ends: 38750 [2021-11-17 00:26:24,021 INFO L226 Difference]: Without dead ends: 22927 [2021-11-17 00:26:24,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 322 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2021-11-17 00:26:24,058 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 4762 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 3873 mSolverCounterSat, 1630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 5503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1630 IncrementalHoareTripleChecker+Valid, 3873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-17 00:26:24,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4816 Valid, 3365 Invalid, 5503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1630 Valid, 3873 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-17 00:26:24,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22927 states. [2021-11-17 00:26:25,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22927 to 22643. [2021-11-17 00:26:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22643 states, 17080 states have (on average 1.2987704918032787) internal successors, (22183), 17376 states have internal predecessors, (22183), 3668 states have call successors, (3668), 1825 states have call predecessors, (3668), 1894 states have return successors, (3966), 3660 states have call predecessors, (3966), 3667 states have call successors, (3966) [2021-11-17 00:26:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22643 states to 22643 states and 29817 transitions. [2021-11-17 00:26:25,282 INFO L78 Accepts]: Start accepts. Automaton has 22643 states and 29817 transitions. Word has length 157 [2021-11-17 00:26:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:26:25,283 INFO L470 AbstractCegarLoop]: Abstraction has 22643 states and 29817 transitions. [2021-11-17 00:26:25,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-17 00:26:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 22643 states and 29817 transitions. [2021-11-17 00:26:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-17 00:26:25,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:26:25,297 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:26:25,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-17 00:26:25,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-17 00:26:25,516 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:26:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:26:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1725272344, now seen corresponding path program 1 times [2021-11-17 00:26:25,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:26:25,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031860120] [2021-11-17 00:26:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:26:25,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:26:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:26:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:26:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:26:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:26:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-17 00:26:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:26:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 00:26:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:26:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-17 00:26:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:26:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-17 00:26:25,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:26:25,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031860120] [2021-11-17 00:26:25,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031860120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:26:25,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:26:25,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:26:25,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119752361] [2021-11-17 00:26:25,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:26:25,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:26:25,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:26:25,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:26:25,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:26:25,669 INFO L87 Difference]: Start difference. First operand 22643 states and 29817 transitions. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (14), 7 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 00:26:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:26:36,946 INFO L93 Difference]: Finished difference Result 67709 states and 94016 transitions. [2021-11-17 00:26:36,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-17 00:26:36,947 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (14), 7 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 172 [2021-11-17 00:26:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:26:37,141 INFO L225 Difference]: With dead ends: 67709 [2021-11-17 00:26:37,141 INFO L226 Difference]: Without dead ends: 45084 [2021-11-17 00:26:37,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-11-17 00:26:37,185 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 1764 mSDsluCounter, 3739 mSDsCounter, 0 mSdLazyCounter, 3918 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 5035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 3918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:26:37,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 5267 Invalid, 5035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1117 Valid, 3918 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2021-11-17 00:26:37,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45084 states. [2021-11-17 00:26:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45084 to 22701. [2021-11-17 00:26:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22701 states, 17138 states have (on average 1.2977593651534602) internal successors, (22241), 17434 states have internal predecessors, (22241), 3668 states have call successors, (3668), 1825 states have call predecessors, (3668), 1894 states have return successors, (3966), 3660 states have call predecessors, (3966), 3667 states have call successors, (3966) [2021-11-17 00:26:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22701 states to 22701 states and 29875 transitions. [2021-11-17 00:26:38,655 INFO L78 Accepts]: Start accepts. Automaton has 22701 states and 29875 transitions. Word has length 172 [2021-11-17 00:26:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:26:38,656 INFO L470 AbstractCegarLoop]: Abstraction has 22701 states and 29875 transitions. [2021-11-17 00:26:38,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (14), 7 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 00:26:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 22701 states and 29875 transitions. [2021-11-17 00:26:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-17 00:26:38,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:26:38,669 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:26:38,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-17 00:26:38,669 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:26:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:26:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2046103374, now seen corresponding path program 1 times [2021-11-17 00:26:38,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:26:38,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846176657] [2021-11-17 00:26:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:26:38,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:26:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:26:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:26:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:26:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:26:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:26:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 00:26:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:26:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 00:26:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:26:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 00:26:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:26:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-17 00:26:38,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:26:38,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846176657] [2021-11-17 00:26:38,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846176657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:26:38,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:26:38,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:26:38,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520885772] [2021-11-17 00:26:38,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:26:38,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:26:38,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:26:38,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:26:38,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:26:38,810 INFO L87 Difference]: Start difference. First operand 22701 states and 29875 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-17 00:26:46,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:26:46,106 INFO L93 Difference]: Finished difference Result 67854 states and 94161 transitions. [2021-11-17 00:26:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-17 00:26:46,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 180 [2021-11-17 00:26:46,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:26:46,263 INFO L225 Difference]: With dead ends: 67854 [2021-11-17 00:26:46,263 INFO L226 Difference]: Without dead ends: 45171 [2021-11-17 00:26:46,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-11-17 00:26:46,317 INFO L933 BasicCegarLoop]: 1508 mSDtfsCounter, 2194 mSDsluCounter, 2794 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 1555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 4302 SdHoareTripleChecker+Invalid, 4354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1555 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:26:46,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2260 Valid, 4302 Invalid, 4354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1555 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-17 00:26:46,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45171 states. [2021-11-17 00:26:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45171 to 22701. [2021-11-17 00:26:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22701 states, 17138 states have (on average 1.2977593651534602) internal successors, (22241), 17434 states have internal predecessors, (22241), 3668 states have call successors, (3668), 1825 states have call predecessors, (3668), 1894 states have return successors, (3966), 3660 states have call predecessors, (3966), 3667 states have call successors, (3966) [2021-11-17 00:26:48,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22701 states to 22701 states and 29875 transitions. [2021-11-17 00:26:48,044 INFO L78 Accepts]: Start accepts. Automaton has 22701 states and 29875 transitions. Word has length 180 [2021-11-17 00:26:48,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:26:48,044 INFO L470 AbstractCegarLoop]: Abstraction has 22701 states and 29875 transitions. [2021-11-17 00:26:48,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-17 00:26:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 22701 states and 29875 transitions. [2021-11-17 00:26:48,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-17 00:26:48,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:26:48,053 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:26:48,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-17 00:26:48,053 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:26:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:26:48,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1366793148, now seen corresponding path program 1 times [2021-11-17 00:26:48,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:26:48,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956181058] [2021-11-17 00:26:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:26:48,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:26:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:26:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:26:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:26:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:26:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:26:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:26:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:26:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:26:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 00:26:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 00:26:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:26:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:26:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-17 00:26:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-17 00:26:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-17 00:26:48,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:26:48,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956181058] [2021-11-17 00:26:48,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956181058] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:26:48,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589015687] [2021-11-17 00:26:48,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:26:48,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:26:48,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:26:48,273 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:26:48,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-17 00:26:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:48,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:26:48,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:26:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-17 00:26:48,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:26:48,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589015687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:26:48,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:26:48,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-11-17 00:26:48,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460422553] [2021-11-17 00:26:48,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:26:48,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:26:48,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:26:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:26:48,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:26:48,900 INFO L87 Difference]: Start difference. First operand 22701 states and 29875 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 00:26:50,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:26:50,460 INFO L93 Difference]: Finished difference Result 51482 states and 68813 transitions. [2021-11-17 00:26:50,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:26:50,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 190 [2021-11-17 00:26:50,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:26:50,541 INFO L225 Difference]: With dead ends: 51482 [2021-11-17 00:26:50,541 INFO L226 Difference]: Without dead ends: 29057 [2021-11-17 00:26:50,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:26:50,578 INFO L933 BasicCegarLoop]: 1163 mSDtfsCounter, 222 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:26:50,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2055 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:26:50,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29057 states. [2021-11-17 00:26:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29057 to 22743. [2021-11-17 00:26:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22743 states, 17180 states have (on average 1.2970314318975553) internal successors, (22283), 17476 states have internal predecessors, (22283), 3668 states have call successors, (3668), 1825 states have call predecessors, (3668), 1894 states have return successors, (3966), 3660 states have call predecessors, (3966), 3667 states have call successors, (3966) [2021-11-17 00:26:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22743 states to 22743 states and 29917 transitions. [2021-11-17 00:26:51,895 INFO L78 Accepts]: Start accepts. Automaton has 22743 states and 29917 transitions. Word has length 190 [2021-11-17 00:26:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:26:51,895 INFO L470 AbstractCegarLoop]: Abstraction has 22743 states and 29917 transitions. [2021-11-17 00:26:51,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 00:26:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 22743 states and 29917 transitions. [2021-11-17 00:26:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-17 00:26:51,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:26:51,904 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:26:51,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-17 00:26:52,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:26:52,107 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:26:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:26:52,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1313741947, now seen corresponding path program 1 times [2021-11-17 00:26:52,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:26:52,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663034969] [2021-11-17 00:26:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:26:52,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:26:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:26:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:26:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:26:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:26:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:26:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:26:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:26:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:26:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:26:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 00:26:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 00:26:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 00:26:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:26:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:26:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-17 00:26:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 00:26:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 00:26:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 00:26:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:26:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-17 00:26:52,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:26:52,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663034969] [2021-11-17 00:26:52,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663034969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:26:52,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:26:52,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-17 00:26:52,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836195026] [2021-11-17 00:26:52,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:26:52,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-17 00:26:52,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:26:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-17 00:26:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:26:52,441 INFO L87 Difference]: Start difference. First operand 22743 states and 29917 transitions. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (22), 8 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:27:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:27:04,162 INFO L93 Difference]: Finished difference Result 57508 states and 79984 transitions. [2021-11-17 00:27:04,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-17 00:27:04,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (22), 8 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) Word has length 199 [2021-11-17 00:27:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:27:04,274 INFO L225 Difference]: With dead ends: 57508 [2021-11-17 00:27:04,274 INFO L226 Difference]: Without dead ends: 35041 [2021-11-17 00:27:04,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-11-17 00:27:04,324 INFO L933 BasicCegarLoop]: 1114 mSDtfsCounter, 1211 mSDsluCounter, 5987 mSDsCounter, 0 mSdLazyCounter, 4306 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 7101 SdHoareTripleChecker+Invalid, 4976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 4306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:27:04,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1287 Valid, 7101 Invalid, 4976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 4306 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2021-11-17 00:27:04,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35041 states. [2021-11-17 00:27:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35041 to 22848. [2021-11-17 00:27:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22848 states, 17264 states have (on average 1.2955861909175161) internal successors, (22367), 17539 states have internal predecessors, (22367), 3668 states have call successors, (3668), 1825 states have call predecessors, (3668), 1915 states have return successors, (3987), 3702 states have call predecessors, (3987), 3667 states have call successors, (3987) [2021-11-17 00:27:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22848 states to 22848 states and 30022 transitions. [2021-11-17 00:27:05,973 INFO L78 Accepts]: Start accepts. Automaton has 22848 states and 30022 transitions. Word has length 199 [2021-11-17 00:27:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:27:05,973 INFO L470 AbstractCegarLoop]: Abstraction has 22848 states and 30022 transitions. [2021-11-17 00:27:05,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (22), 8 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:27:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 22848 states and 30022 transitions. [2021-11-17 00:27:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-17 00:27:05,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:27:05,982 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-17 00:27:05,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-17 00:27:05,983 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:27:05,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:27:05,983 INFO L85 PathProgramCache]: Analyzing trace with hash 3020273, now seen corresponding path program 1 times [2021-11-17 00:27:05,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:27:05,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477267142] [2021-11-17 00:27:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:27:05,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:27:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:27:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:27:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:27:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:27:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:27:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:27:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 00:27:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:27:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:27:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:27:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:27:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:27:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:27:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 00:27:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 00:27:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 00:27:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 00:27:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:27:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 00:27:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 00:27:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:27:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 00:27:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:06,604 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-17 00:27:06,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:27:06,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477267142] [2021-11-17 00:27:06,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477267142] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:27:06,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117000108] [2021-11-17 00:27:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:27:06,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:27:06,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:27:06,606 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:27:06,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-17 00:27:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:07,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-17 00:27:07,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:27:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-17 00:27:07,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:27:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-17 00:27:08,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117000108] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-17 00:27:08,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-17 00:27:08,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21, 16] total 31 [2021-11-17 00:27:08,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167558572] [2021-11-17 00:27:08,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:27:08,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 00:27:08,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:27:08,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 00:27:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2021-11-17 00:27:08,902 INFO L87 Difference]: Start difference. First operand 22848 states and 30022 transitions. Second operand has 11 states, 10 states have (on average 13.2) internal successors, (132), 9 states have internal predecessors, (132), 5 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-17 00:27:15,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:27:15,404 INFO L93 Difference]: Finished difference Result 60662 states and 79780 transitions. [2021-11-17 00:27:15,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 00:27:15,406 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 13.2) internal successors, (132), 9 states have internal predecessors, (132), 5 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 205 [2021-11-17 00:27:15,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:27:15,532 INFO L225 Difference]: With dead ends: 60662 [2021-11-17 00:27:15,532 INFO L226 Difference]: Without dead ends: 37473 [2021-11-17 00:27:15,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 426 SyntacticMatches, 11 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2021-11-17 00:27:15,591 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 4183 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 3870 mSolverCounterSat, 1372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 3321 SdHoareTripleChecker+Invalid, 5242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1372 IncrementalHoareTripleChecker+Valid, 3870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:27:15,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 3321 Invalid, 5242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1372 Valid, 3870 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-17 00:27:15,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37473 states. [2021-11-17 00:27:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37473 to 22827. [2021-11-17 00:27:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22827 states, 17243 states have (on average 1.2951342573798064) internal successors, (22332), 17525 states have internal predecessors, (22332), 3668 states have call successors, (3668), 1825 states have call predecessors, (3668), 1915 states have return successors, (3987), 3695 states have call predecessors, (3987), 3667 states have call successors, (3987) [2021-11-17 00:27:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22827 states to 22827 states and 29987 transitions. [2021-11-17 00:27:17,289 INFO L78 Accepts]: Start accepts. Automaton has 22827 states and 29987 transitions. Word has length 205 [2021-11-17 00:27:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:27:17,290 INFO L470 AbstractCegarLoop]: Abstraction has 22827 states and 29987 transitions. [2021-11-17 00:27:17,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 13.2) internal successors, (132), 9 states have internal predecessors, (132), 5 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-17 00:27:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 22827 states and 29987 transitions. [2021-11-17 00:27:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-17 00:27:17,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:27:17,303 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:27:17,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-17 00:27:17,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:27:17,513 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:27:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:27:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash -113776025, now seen corresponding path program 1 times [2021-11-17 00:27:17,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:27:17,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156873223] [2021-11-17 00:27:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:27:17,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:27:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:27:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:27:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:27:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:27:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:27:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:27:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 00:27:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:27:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:27:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 00:27:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 00:27:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 00:27:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-17 00:27:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:27:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-17 00:27:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 00:27:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-17 00:27:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:27:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:27:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:27:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-17 00:27:17,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:27:17,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156873223] [2021-11-17 00:27:17,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156873223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:27:17,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:27:17,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 00:27:17,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636991704] [2021-11-17 00:27:17,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:27:17,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:27:17,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:27:17,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:27:17,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:27:17,724 INFO L87 Difference]: Start difference. First operand 22827 states and 29987 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-11-17 00:27:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:27:28,704 INFO L93 Difference]: Finished difference Result 54352 states and 75572 transitions. [2021-11-17 00:27:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:27:28,705 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 3 states have internal predecessors, (137), 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 222 [2021-11-17 00:27:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:27:28,834 INFO L225 Difference]: With dead ends: 54352 [2021-11-17 00:27:28,834 INFO L226 Difference]: Without dead ends: 31543 [2021-11-17 00:27:28,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:27:28,886 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 1084 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:27:28,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 3225 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2021-11-17 00:27:28,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31543 states. [2021-11-17 00:27:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31543 to 22856. [2021-11-17 00:27:30,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22856 states, 17272 states have (on average 1.2946387216303845) internal successors, (22361), 17554 states have internal predecessors, (22361), 3668 states have call successors, (3668), 1825 states have call predecessors, (3668), 1915 states have return successors, (3987), 3695 states have call predecessors, (3987), 3667 states have call successors, (3987) [2021-11-17 00:27:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22856 states to 22856 states and 30016 transitions. [2021-11-17 00:27:30,648 INFO L78 Accepts]: Start accepts. Automaton has 22856 states and 30016 transitions. Word has length 222 [2021-11-17 00:27:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:27:30,648 INFO L470 AbstractCegarLoop]: Abstraction has 22856 states and 30016 transitions. [2021-11-17 00:27:30,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-11-17 00:27:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 22856 states and 30016 transitions. [2021-11-17 00:27:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-17 00:27:30,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:27:30,661 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:27:30,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-17 00:27:30,662 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:27:30,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:27:30,662 INFO L85 PathProgramCache]: Analyzing trace with hash -107078485, now seen corresponding path program 1 times [2021-11-17 00:27:30,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:27:30,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369887716] [2021-11-17 00:27:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:27:30,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:27:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:27:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:27:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:27:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:27:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:27:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:27:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 00:27:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:27:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:27:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 00:27:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 00:27:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-17 00:27:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:27:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:27:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 00:27:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-17 00:27:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 00:27:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:27:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:27:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:27:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-17 00:27:30,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:27:30,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369887716] [2021-11-17 00:27:30,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369887716] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:27:30,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095248785] [2021-11-17 00:27:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:27:30,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:27:30,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:27:30,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:27:30,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-17 00:27:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:31,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 2066 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:27:31,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:27:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-17 00:27:31,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:27:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-17 00:27:31,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095248785] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:27:31,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:27:31,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2021-11-17 00:27:31,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349322326] [2021-11-17 00:27:31,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:27:31,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-17 00:27:31,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:27:31,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-17 00:27:31,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:27:31,907 INFO L87 Difference]: Start difference. First operand 22856 states and 30016 transitions. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 7 states have internal predecessors, (182), 2 states have call successors, (45), 9 states have call predecessors, (45), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-17 00:27:38,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:27:38,112 INFO L93 Difference]: Finished difference Result 54526 states and 75804 transitions. [2021-11-17 00:27:38,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-17 00:27:38,113 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 7 states have internal predecessors, (182), 2 states have call successors, (45), 9 states have call predecessors, (45), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 224 [2021-11-17 00:27:38,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:27:38,242 INFO L225 Difference]: With dead ends: 54526 [2021-11-17 00:27:38,242 INFO L226 Difference]: Without dead ends: 31688 [2021-11-17 00:27:38,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-17 00:27:38,304 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 1511 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 1126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1126 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:27:38,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 2937 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1126 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-17 00:27:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31688 states. [2021-11-17 00:27:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31688 to 23030. [2021-11-17 00:27:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23030 states, 17446 states have (on average 1.291700103175513) internal successors, (22535), 17728 states have internal predecessors, (22535), 3668 states have call successors, (3668), 1825 states have call predecessors, (3668), 1915 states have return successors, (3987), 3695 states have call predecessors, (3987), 3667 states have call successors, (3987) [2021-11-17 00:27:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23030 states to 23030 states and 30190 transitions. [2021-11-17 00:27:40,195 INFO L78 Accepts]: Start accepts. Automaton has 23030 states and 30190 transitions. Word has length 224 [2021-11-17 00:27:40,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:27:40,196 INFO L470 AbstractCegarLoop]: Abstraction has 23030 states and 30190 transitions. [2021-11-17 00:27:40,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 7 states have internal predecessors, (182), 2 states have call successors, (45), 9 states have call predecessors, (45), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-17 00:27:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 23030 states and 30190 transitions. [2021-11-17 00:27:40,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-17 00:27:40,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:27:40,210 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:27:40,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-17 00:27:40,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-17 00:27:40,412 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:27:40,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:27:40,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1000123767, now seen corresponding path program 2 times [2021-11-17 00:27:40,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:27:40,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139092272] [2021-11-17 00:27:40,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:27:40,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:27:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:27:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:27:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:27:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:27:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:27:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 00:27:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 00:27:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:27:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:27:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 00:27:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 00:27:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 00:27:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 00:27:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:27:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-17 00:27:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 00:27:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 00:27:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:27:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:27:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:27:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:27:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-17 00:27:40,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:27:40,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139092272] [2021-11-17 00:27:40,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139092272] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:27:40,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944807547] [2021-11-17 00:27:40,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 00:27:40,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:27:40,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:27:40,628 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:27:40,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-17 00:27:41,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-17 00:27:41,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 00:27:41,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 2084 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-17 00:27:41,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:27:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-17 00:27:41,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:27:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-17 00:27:42,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944807547] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:27:42,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:27:42,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 21 [2021-11-17 00:27:42,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706314602] [2021-11-17 00:27:42,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:27:42,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-17 00:27:42,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:27:42,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-17 00:27:42,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-11-17 00:27:42,069 INFO L87 Difference]: Start difference. First operand 23030 states and 30190 transitions. Second operand has 21 states, 21 states have (on average 11.714285714285714) internal successors, (246), 14 states have internal predecessors, (246), 3 states have call successors, (47), 9 states have call predecessors, (47), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-17 00:28:03,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:28:03,115 INFO L93 Difference]: Finished difference Result 108156 states and 153416 transitions. [2021-11-17 00:28:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-17 00:28:03,116 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.714285714285714) internal successors, (246), 14 states have internal predecessors, (246), 3 states have call successors, (47), 9 states have call predecessors, (47), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 230 [2021-11-17 00:28:03,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:28:03,408 INFO L225 Difference]: With dead ends: 108156 [2021-11-17 00:28:03,408 INFO L226 Difference]: Without dead ends: 84939 [2021-11-17 00:28:03,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=533, Invalid=3127, Unknown=0, NotChecked=0, Total=3660 [2021-11-17 00:28:03,485 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 3804 mSDsluCounter, 6663 mSDsCounter, 0 mSdLazyCounter, 7723 mSolverCounterSat, 2362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4011 SdHoareTripleChecker+Valid, 8280 SdHoareTripleChecker+Invalid, 10085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2362 IncrementalHoareTripleChecker+Valid, 7723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:28:03,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4011 Valid, 8280 Invalid, 10085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2362 Valid, 7723 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2021-11-17 00:28:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84939 states. [2021-11-17 00:28:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84939 to 50013. [2021-11-17 00:28:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50013 states, 38137 states have (on average 1.2862574402810918) internal successors, (49054), 38731 states have internal predecessors, (49054), 7826 states have call successors, (7826), 3855 states have call predecessors, (7826), 4049 states have return successors, (8521), 7885 states have call predecessors, (8521), 7825 states have call successors, (8521) [2021-11-17 00:28:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50013 states to 50013 states and 65401 transitions. [2021-11-17 00:28:08,107 INFO L78 Accepts]: Start accepts. Automaton has 50013 states and 65401 transitions. Word has length 230 [2021-11-17 00:28:08,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:28:08,108 INFO L470 AbstractCegarLoop]: Abstraction has 50013 states and 65401 transitions. [2021-11-17 00:28:08,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.714285714285714) internal successors, (246), 14 states have internal predecessors, (246), 3 states have call successors, (47), 9 states have call predecessors, (47), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-17 00:28:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 50013 states and 65401 transitions. [2021-11-17 00:28:08,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-17 00:28:08,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:28:08,151 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:28:08,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-17 00:28:08,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-17 00:28:08,373 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:28:08,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:28:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash -117086870, now seen corresponding path program 1 times [2021-11-17 00:28:08,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:28:08,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760497863] [2021-11-17 00:28:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:28:08,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:28:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:28:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:28:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:28:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:28:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:28:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-17 00:28:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-17 00:28:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:28:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:28:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:28:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 00:28:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 00:28:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:28:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:28:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:28:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-17 00:28:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:28:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 00:28:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:28:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-17 00:28:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:28:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:28:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:28:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 00:28:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-17 00:28:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-17 00:28:08,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:28:08,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760497863] [2021-11-17 00:28:08,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760497863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:28:08,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:28:08,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:28:08,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308258751] [2021-11-17 00:28:08,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:28:08,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:28:08,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:28:08,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:28:08,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:28:08,576 INFO L87 Difference]: Start difference. First operand 50013 states and 65401 transitions. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 7 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-17 00:28:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:28:19,039 INFO L93 Difference]: Finished difference Result 124905 states and 169333 transitions. [2021-11-17 00:28:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 00:28:19,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 7 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 239 [2021-11-17 00:28:19,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:28:19,291 INFO L225 Difference]: With dead ends: 124905 [2021-11-17 00:28:19,291 INFO L226 Difference]: Without dead ends: 75187 [2021-11-17 00:28:19,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:28:19,387 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 1026 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 3504 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:28:19,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 3504 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-17 00:28:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75187 states. [2021-11-17 00:28:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75187 to 50103. [2021-11-17 00:28:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50103 states, 38227 states have (on average 1.2855834881104977) internal successors, (49144), 38821 states have internal predecessors, (49144), 7826 states have call successors, (7826), 3855 states have call predecessors, (7826), 4049 states have return successors, (8521), 7885 states have call predecessors, (8521), 7825 states have call successors, (8521) [2021-11-17 00:28:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50103 states to 50103 states and 65491 transitions. [2021-11-17 00:28:23,568 INFO L78 Accepts]: Start accepts. Automaton has 50103 states and 65491 transitions. Word has length 239 [2021-11-17 00:28:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:28:23,568 INFO L470 AbstractCegarLoop]: Abstraction has 50103 states and 65491 transitions. [2021-11-17 00:28:23,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 7 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-17 00:28:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 50103 states and 65491 transitions. [2021-11-17 00:28:23,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-17 00:28:23,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:28:23,586 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:28:23,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-17 00:28:23,591 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:28:23,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:28:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2118929596, now seen corresponding path program 1 times [2021-11-17 00:28:23,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:28:23,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509396241] [2021-11-17 00:28:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:28:23,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:28:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:28:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:28:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 00:28:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:28:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:28:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-17 00:28:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:28:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:28:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 00:28:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:28:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:28:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 00:28:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 00:28:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:28:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:28:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:28:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:28:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-17 00:28:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:28:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 00:28:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 00:28:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 00:28:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:28:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:28:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:28:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-17 00:28:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-17 00:28:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:28:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-17 00:28:23,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:28:23,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509396241] [2021-11-17 00:28:23,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509396241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:28:23,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:28:23,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-17 00:28:23,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544462537] [2021-11-17 00:28:23,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:28:23,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-17 00:28:23,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:28:23,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-17 00:28:23,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:28:23,855 INFO L87 Difference]: Start difference. First operand 50103 states and 65491 transitions. Second operand has 13 states, 12 states have (on average 12.75) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (28), 7 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-17 00:28:33,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:28:33,188 INFO L93 Difference]: Finished difference Result 112415 states and 151284 transitions. [2021-11-17 00:28:33,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 00:28:33,188 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.75) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (28), 7 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 249 [2021-11-17 00:28:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:28:33,375 INFO L225 Difference]: With dead ends: 112415 [2021-11-17 00:28:33,375 INFO L226 Difference]: Without dead ends: 62607 [2021-11-17 00:28:33,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-17 00:28:33,468 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 699 mSDsluCounter, 4977 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 5779 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:28:33,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 5779 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-17 00:28:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62607 states.