./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.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 3a2c6724f5301da85e20fbddd1914030623487cb494f00194a53042f01a1dafb --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 22:51:54,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 22:51:54,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 22:51:54,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 22:51:54,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 22:51:54,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 22:51:54,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 22:51:54,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 22:51:54,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 22:51:54,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 22:51:54,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 22:51:54,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 22:51:54,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 22:51:54,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 22:51:54,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 22:51:54,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 22:51:54,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 22:51:54,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 22:51:54,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 22:51:54,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 22:51:54,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 22:51:54,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 22:51:54,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 22:51:54,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 22:51:54,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 22:51:54,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 22:51:54,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 22:51:54,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 22:51:54,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 22:51:54,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 22:51:54,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 22:51:54,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 22:51:54,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 22:51:54,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 22:51:54,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 22:51:54,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 22:51:54,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 22:51:54,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 22:51:54,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 22:51:54,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 22:51:54,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 22:51:54,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 22:51:54,697 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 22:51:54,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 22:51:54,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 22:51:54,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 22:51:54,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 22:51:54,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 22:51:54,702 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 22:51:54,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 22:51:54,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 22:51:54,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 22:51:54,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 22:51:54,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 22:51:54,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 22:51:54,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 22:51:54,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 22:51:54,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 22:51:54,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 22:51:54,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 22:51:54,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 22:51:54,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 22:51:54,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 22:51:54,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 22:51:54,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 22:51:54,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 22:51:54,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 22:51:54,706 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 22:51:54,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 22:51:54,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 22:51:54,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 22:51:54,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a2c6724f5301da85e20fbddd1914030623487cb494f00194a53042f01a1dafb [2021-11-05 22:51:55,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 22:51:55,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 22:51:55,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 22:51:55,035 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 22:51:55,036 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 22:51:55,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-05 22:51:55,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82ef8f26b/e3f71f777b19471bbef9606b66e152fc/FLAG347e24ae0 [2021-11-05 22:51:55,826 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 22:51:55,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-05 22:51:55,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82ef8f26b/e3f71f777b19471bbef9606b66e152fc/FLAG347e24ae0 [2021-11-05 22:51:56,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82ef8f26b/e3f71f777b19471bbef9606b66e152fc [2021-11-05 22:51:56,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 22:51:56,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 22:51:56,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 22:51:56,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 22:51:56,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 22:51:56,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 10:51:56" (1/1) ... [2021-11-05 22:51:56,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3932809d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:56, skipping insertion in model container [2021-11-05 22:51:56,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 10:51:56" (1/1) ... [2021-11-05 22:51:56,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 22:51:56,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 22:51:58,614 WARN L228 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-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[325844,325857] [2021-11-05 22:51:58,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 22:51:58,686 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 22:51:59,192 WARN L228 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-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[325844,325857] [2021-11-05 22:51:59,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 22:51:59,471 INFO L208 MainTranslator]: Completed translation [2021-11-05 22:51:59,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59 WrapperNode [2021-11-05 22:51:59,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 22:51:59,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 22:51:59,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 22:51:59,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 22:51:59,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (1/1) ... [2021-11-05 22:51:59,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (1/1) ... [2021-11-05 22:52:00,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 22:52:00,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 22:52:00,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 22:52:00,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 22:52:00,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (1/1) ... [2021-11-05 22:52:00,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (1/1) ... [2021-11-05 22:52:00,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (1/1) ... [2021-11-05 22:52:00,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (1/1) ... [2021-11-05 22:52:01,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (1/1) ... [2021-11-05 22:52:01,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (1/1) ... [2021-11-05 22:52:01,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (1/1) ... [2021-11-05 22:52:01,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 22:52:01,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 22:52:01,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 22:52:01,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 22:52:01,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (1/1) ... [2021-11-05 22:52:01,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 22:52:01,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 22:52:01,681 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) [2021-11-05 22:52:01,741 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 [2021-11-05 22:52:01,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_9_6 [2021-11-05 22:52:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_9_6 [2021-11-05 22:52:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure macb_probe [2021-11-05 22:52:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_probe [2021-11-05 22:52:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 22:52:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 22:52:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 22:52:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 22:52:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure macb_open [2021-11-05 22:52:01,800 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_open [2021-11-05 22:52:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure macb_alloc_consistent [2021-11-05 22:52:01,800 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_alloc_consistent [2021-11-05 22:52:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 22:52:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-05 22:52:01,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-05 22:52:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 22:52:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-05 22:52:01,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-05 22:52:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 22:52:01,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 22:52:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 22:52:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 22:52:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_17 [2021-11-05 22:52:01,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_17 [2021-11-05 22:52:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 22:52:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 22:52:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 22:52:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 22:52:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 22:52:13,540 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint L10337: #t~ret1466 := main_#res; [2021-11-05 22:52:13,540 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 22:52:13,541 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_11_returnLabel: main_#res := 0; [2021-11-05 22:52:17,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 22:52:17,925 INFO L299 CfgBuilder]: Removed 6069 assume(true) statements. [2021-11-05 22:52:17,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 10:52:17 BoogieIcfgContainer [2021-11-05 22:52:17,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 22:52:17,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 22:52:17,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 22:52:17,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 22:52:17,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 10:51:56" (1/3) ... [2021-11-05 22:52:17,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae59b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 10:52:17, skipping insertion in model container [2021-11-05 22:52:17,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:51:59" (2/3) ... [2021-11-05 22:52:17,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae59b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 10:52:17, skipping insertion in model container [2021-11-05 22:52:17,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 10:52:17" (3/3) ... [2021-11-05 22:52:17,939 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-05 22:52:17,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 22:52:17,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-05 22:52:18,013 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 22:52:18,021 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 [2021-11-05 22:52:18,022 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-05 22:52:18,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 5157 states, 5117 states have (on average 1.3083838186437367) internal successors, (6695), 5124 states have internal predecessors, (6695), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-05 22:52:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-05 22:52:18,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:52:18,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:52:18,117 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:52:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:52:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash -378521565, now seen corresponding path program 1 times [2021-11-05 22:52:18,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:52:18,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377756331] [2021-11-05 22:52:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:52:18,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:52:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:52:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:52:18,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:52:18,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377756331] [2021-11-05 22:52:18,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377756331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:52:18,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:52:18,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 22:52:18,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142366107] [2021-11-05 22:52:18,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:52:18,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 22:52:18,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:52:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 22:52:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 22:52:18,808 INFO L87 Difference]: Start difference. First operand has 5157 states, 5117 states have (on average 1.3083838186437367) internal successors, (6695), 5124 states have internal predecessors, (6695), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 22:52:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:52:19,281 INFO L93 Difference]: Finished difference Result 10280 states and 13473 transitions. [2021-11-05 22:52:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 22:52:19,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-05 22:52:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:52:19,327 INFO L225 Difference]: With dead ends: 10280 [2021-11-05 22:52:19,327 INFO L226 Difference]: Without dead ends: 5047 [2021-11-05 22:52:19,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 22:52:19,393 INFO L933 BasicCegarLoop]: 6654 mSDtfsCounter, 6643 mSDsluCounter, 6634 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6643 SdHoareTripleChecker+Valid, 13288 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.49ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.00ms IncrementalHoareTripleChecker+Time [2021-11-05 22:52:19,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6643 Valid, 13288 Invalid, 24 Unknown, 0 Unchecked, 54.49ms Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 57.00ms Time] [2021-11-05 22:52:19,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2021-11-05 22:52:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 5047. [2021-11-05 22:52:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5047 states, 5009 states have (on average 1.27690157716111) internal successors, (6396), 5014 states have internal predecessors, (6396), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-05 22:52:19,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5047 states to 5047 states and 6446 transitions. [2021-11-05 22:52:19,798 INFO L78 Accepts]: Start accepts. Automaton has 5047 states and 6446 transitions. Word has length 22 [2021-11-05 22:52:19,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:52:19,799 INFO L470 AbstractCegarLoop]: Abstraction has 5047 states and 6446 transitions. [2021-11-05 22:52:19,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 22:52:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 5047 states and 6446 transitions. [2021-11-05 22:52:19,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-05 22:52:19,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:52:19,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:52:19,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 22:52:19,802 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:52:19,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:52:19,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1313457478, now seen corresponding path program 1 times [2021-11-05 22:52:19,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:52:19,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516119376] [2021-11-05 22:52:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:52:19,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:52:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:52:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:52:20,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:52:20,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516119376] [2021-11-05 22:52:20,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516119376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:52:20,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:52:20,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 22:52:20,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598035652] [2021-11-05 22:52:20,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:52:20,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 22:52:20,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:52:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 22:52:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 22:52:20,027 INFO L87 Difference]: Start difference. First operand 5047 states and 6446 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 22:52:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:52:20,468 INFO L93 Difference]: Finished difference Result 10030 states and 12855 transitions. [2021-11-05 22:52:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 22:52:20,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-05 22:52:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:52:20,555 INFO L225 Difference]: With dead ends: 10030 [2021-11-05 22:52:20,555 INFO L226 Difference]: Without dead ends: 10026 [2021-11-05 22:52:20,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 22:52:20,574 INFO L933 BasicCegarLoop]: 8598 mSDtfsCounter, 6428 mSDsluCounter, 14958 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6428 SdHoareTripleChecker+Valid, 23556 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.99ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.03ms IncrementalHoareTripleChecker+Time [2021-11-05 22:52:20,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6428 Valid, 23556 Invalid, 52 Unknown, 0 Unchecked, 41.99ms Time], IncrementalHoareTripleChecker [27 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 69.03ms Time] [2021-11-05 22:52:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10026 states. [2021-11-05 22:52:20,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10026 to 8352. [2021-11-05 22:52:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8352 states, 8288 states have (on average 1.2773889961389961) internal successors, (10587), 8288 states have internal predecessors, (10587), 44 states have call successors, (44), 14 states have call predecessors, (44), 14 states have return successors, (88), 49 states have call predecessors, (88), 44 states have call successors, (88) [2021-11-05 22:52:20,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8352 states to 8352 states and 10719 transitions. [2021-11-05 22:52:20,896 INFO L78 Accepts]: Start accepts. Automaton has 8352 states and 10719 transitions. Word has length 24 [2021-11-05 22:52:20,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:52:20,897 INFO L470 AbstractCegarLoop]: Abstraction has 8352 states and 10719 transitions. [2021-11-05 22:52:20,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 22:52:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8352 states and 10719 transitions. [2021-11-05 22:52:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-05 22:52:20,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:52:20,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:52:20,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 22:52:20,899 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:52:20,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:52:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash -487287063, now seen corresponding path program 1 times [2021-11-05 22:52:20,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:52:20,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778125316] [2021-11-05 22:52:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:52:20,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:52:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:52:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:52:21,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:52:21,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778125316] [2021-11-05 22:52:21,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778125316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:52:21,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:52:21,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 22:52:21,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375057984] [2021-11-05 22:52:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:52:21,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 22:52:21,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:52:21,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 22:52:21,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 22:52:21,086 INFO L87 Difference]: Start difference. First operand 8352 states and 10719 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 22:52:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:52:21,908 INFO L93 Difference]: Finished difference Result 16645 states and 21482 transitions. [2021-11-05 22:52:21,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 22:52:21,909 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-05 22:52:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:52:22,067 INFO L225 Difference]: With dead ends: 16645 [2021-11-05 22:52:22,067 INFO L226 Difference]: Without dead ends: 16641 [2021-11-05 22:52:22,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 22:52:22,102 INFO L933 BasicCegarLoop]: 8641 mSDtfsCounter, 6426 mSDsluCounter, 15007 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6426 SdHoareTripleChecker+Valid, 23648 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 206.28ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.41ms IncrementalHoareTripleChecker+Time [2021-11-05 22:52:22,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6426 Valid, 23648 Invalid, 52 Unknown, 0 Unchecked, 206.28ms Time], IncrementalHoareTripleChecker [27 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 76.41ms Time] [2021-11-05 22:52:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16641 states. [2021-11-05 22:52:22,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16641 to 14962. [2021-11-05 22:52:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14962 states, 14846 states have (on average 1.2778526202344065) internal successors, (18971), 14836 states have internal predecessors, (18971), 82 states have call successors, (82), 28 states have call predecessors, (82), 28 states have return successors, (290), 97 states have call predecessors, (290), 82 states have call successors, (290) [2021-11-05 22:52:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14962 states to 14962 states and 19343 transitions. [2021-11-05 22:52:22,867 INFO L78 Accepts]: Start accepts. Automaton has 14962 states and 19343 transitions. Word has length 26 [2021-11-05 22:52:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:52:22,867 INFO L470 AbstractCegarLoop]: Abstraction has 14962 states and 19343 transitions. [2021-11-05 22:52:22,868 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 22:52:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand 14962 states and 19343 transitions. [2021-11-05 22:52:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 22:52:22,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:52:22,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:52:22,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 22:52:22,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:52:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:52:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash -130970356, now seen corresponding path program 1 times [2021-11-05 22:52:22,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:52:22,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226479997] [2021-11-05 22:52:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:52:22,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:52:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:52:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:52:23,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:52:23,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226479997] [2021-11-05 22:52:23,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226479997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:52:23,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:52:23,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 22:52:23,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609785355] [2021-11-05 22:52:23,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:52:23,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 22:52:23,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:52:23,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 22:52:23,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 22:52:23,167 INFO L87 Difference]: Start difference. First operand 14962 states and 19343 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 22:52:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:52:24,026 INFO L93 Difference]: Finished difference Result 29893 states and 39025 transitions. [2021-11-05 22:52:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 22:52:24,027 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-05 22:52:24,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:52:24,294 INFO L225 Difference]: With dead ends: 29893 [2021-11-05 22:52:24,294 INFO L226 Difference]: Without dead ends: 29856 [2021-11-05 22:52:24,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 22:52:24,362 INFO L933 BasicCegarLoop]: 6537 mSDtfsCounter, 6428 mSDsluCounter, 12943 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6428 SdHoareTripleChecker+Valid, 19480 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.74ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.62ms IncrementalHoareTripleChecker+Time [2021-11-05 22:52:24,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6428 Valid, 19480 Invalid, 53 Unknown, 0 Unchecked, 33.74ms Time], IncrementalHoareTripleChecker [30 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 56.62ms Time] [2021-11-05 22:52:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29856 states. [2021-11-05 22:52:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29856 to 29848. [2021-11-05 22:52:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29848 states, 29622 states have (on average 1.278205387887381) internal successors, (37863), 29597 states have internal predecessors, (37863), 164 states have call successors, (164), 56 states have call predecessors, (164), 56 states have return successors, (952), 194 states have call predecessors, (952), 164 states have call successors, (952) [2021-11-05 22:52:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29848 states to 29848 states and 38979 transitions. [2021-11-05 22:52:25,729 INFO L78 Accepts]: Start accepts. Automaton has 29848 states and 38979 transitions. Word has length 28 [2021-11-05 22:52:25,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:52:25,730 INFO L470 AbstractCegarLoop]: Abstraction has 29848 states and 38979 transitions. [2021-11-05 22:52:25,730 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 22:52:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 29848 states and 38979 transitions. [2021-11-05 22:52:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-05 22:52:25,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:52:25,772 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:52:25,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 22:52:25,773 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:52:25,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:52:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1411005469, now seen corresponding path program 1 times [2021-11-05 22:52:25,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:52:25,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94763694] [2021-11-05 22:52:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:52:25,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:52:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:52:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:52:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:52:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:52:26,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:52:26,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94763694] [2021-11-05 22:52:26,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94763694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:52:26,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:52:26,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 22:52:26,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085325036] [2021-11-05 22:52:26,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:52:26,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 22:52:26,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:52:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 22:52:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 22:52:26,292 INFO L87 Difference]: Start difference. First operand 29848 states and 38979 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:52:28,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:52:38,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:52:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:52:38,908 INFO L93 Difference]: Finished difference Result 66002 states and 87247 transitions. [2021-11-05 22:52:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 22:52:38,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-11-05 22:52:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:52:39,208 INFO L225 Difference]: With dead ends: 66002 [2021-11-05 22:52:39,209 INFO L226 Difference]: Without dead ends: 36176 [2021-11-05 22:52:39,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.36ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-05 22:52:39,551 INFO L933 BasicCegarLoop]: 6329 mSDtfsCounter, 1585 mSDsluCounter, 23218 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 41 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10046.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 29547 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.68ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10941.99ms IncrementalHoareTripleChecker+Time [2021-11-05 22:52:39,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 29547 Invalid, 2945 Unknown, 0 Unchecked, 55.68ms Time], IncrementalHoareTripleChecker [41 Valid, 2902 Invalid, 2 Unknown, 0 Unchecked, 10941.99ms Time] [2021-11-05 22:52:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36176 states. [2021-11-05 22:52:40,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36176 to 31618. [2021-11-05 22:52:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31618 states, 31360 states have (on average 1.2786033163265307) internal successors, (40097), 31359 states have internal predecessors, (40097), 164 states have call successors, (164), 56 states have call predecessors, (164), 88 states have return successors, (1084), 202 states have call predecessors, (1084), 164 states have call successors, (1084) [2021-11-05 22:52:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31618 states to 31618 states and 41345 transitions. [2021-11-05 22:52:41,003 INFO L78 Accepts]: Start accepts. Automaton has 31618 states and 41345 transitions. Word has length 121 [2021-11-05 22:52:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:52:41,005 INFO L470 AbstractCegarLoop]: Abstraction has 31618 states and 41345 transitions. [2021-11-05 22:52:41,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:52:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 31618 states and 41345 transitions. [2021-11-05 22:52:41,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-05 22:52:41,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:52:41,042 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:52:41,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 22:52:41,043 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:52:41,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:52:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1884583074, now seen corresponding path program 1 times [2021-11-05 22:52:41,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:52:41,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554644264] [2021-11-05 22:52:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:52:41,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:52:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:52:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:52:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:52:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:52:41,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:52:41,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554644264] [2021-11-05 22:52:41,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554644264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:52:41,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:52:41,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 22:52:41,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695813147] [2021-11-05 22:52:41,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:52:41,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 22:52:41,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:52:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 22:52:41,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 22:52:41,744 INFO L87 Difference]: Start difference. First operand 31618 states and 41345 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:52:43,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:52:46,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:52:54,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:52:55,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:52:55,668 INFO L93 Difference]: Finished difference Result 64463 states and 85204 transitions. [2021-11-05 22:52:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 22:52:55,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2021-11-05 22:52:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:52:55,902 INFO L225 Difference]: With dead ends: 64463 [2021-11-05 22:52:55,903 INFO L226 Difference]: Without dead ends: 32867 [2021-11-05 22:52:56,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.63ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-05 22:52:56,435 INFO L933 BasicCegarLoop]: 6347 mSDtfsCounter, 569 mSDsluCounter, 23317 mSDsCounter, 0 mSdLazyCounter, 2806 mSolverCounterSat, 25 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11454.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 29664 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.94ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2806 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12510.41ms IncrementalHoareTripleChecker+Time [2021-11-05 22:52:56,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 29664 Invalid, 2833 Unknown, 0 Unchecked, 40.94ms Time], IncrementalHoareTripleChecker [25 Valid, 2806 Invalid, 2 Unknown, 0 Unchecked, 12510.41ms Time] [2021-11-05 22:52:56,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32867 states. [2021-11-05 22:52:57,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32867 to 31642. [2021-11-05 22:52:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31642 states, 31384 states have (on average 1.2783902625541677) internal successors, (40121), 31383 states have internal predecessors, (40121), 164 states have call successors, (164), 56 states have call predecessors, (164), 88 states have return successors, (1084), 202 states have call predecessors, (1084), 164 states have call successors, (1084) [2021-11-05 22:52:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31642 states to 31642 states and 41369 transitions. [2021-11-05 22:52:57,746 INFO L78 Accepts]: Start accepts. Automaton has 31642 states and 41369 transitions. Word has length 126 [2021-11-05 22:52:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:52:57,747 INFO L470 AbstractCegarLoop]: Abstraction has 31642 states and 41369 transitions. [2021-11-05 22:52:57,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:52:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 31642 states and 41369 transitions. [2021-11-05 22:52:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-05 22:52:57,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:52:57,787 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:52:57,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 22:52:57,787 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:52:57,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:52:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash -134099574, now seen corresponding path program 1 times [2021-11-05 22:52:57,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:52:57,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412134325] [2021-11-05 22:52:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:52:57,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:52:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:52:58,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:52:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:52:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:52:58,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:52:58,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412134325] [2021-11-05 22:52:58,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412134325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:52:58,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:52:58,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 22:52:58,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993583828] [2021-11-05 22:52:58,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:52:58,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 22:52:58,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:52:58,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 22:52:58,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 22:52:58,359 INFO L87 Difference]: Start difference. First operand 31642 states and 41369 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:53:00,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:53:11,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:53:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:53:11,976 INFO L93 Difference]: Finished difference Result 82408 states and 108841 transitions. [2021-11-05 22:53:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 22:53:11,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 132 [2021-11-05 22:53:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:53:12,365 INFO L225 Difference]: With dead ends: 82408 [2021-11-05 22:53:12,365 INFO L226 Difference]: Without dead ends: 50788 [2021-11-05 22:53:12,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 168.82ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-11-05 22:53:12,794 INFO L933 BasicCegarLoop]: 7443 mSDtfsCounter, 8092 mSDsluCounter, 40873 mSDsCounter, 0 mSdLazyCounter, 3916 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10443.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8096 SdHoareTripleChecker+Valid, 48316 SdHoareTripleChecker+Invalid, 3978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.18ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3916 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11609.37ms IncrementalHoareTripleChecker+Time [2021-11-05 22:53:12,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8096 Valid, 48316 Invalid, 3978 Unknown, 0 Unchecked, 58.18ms Time], IncrementalHoareTripleChecker [61 Valid, 3916 Invalid, 1 Unknown, 0 Unchecked, 11609.37ms Time] [2021-11-05 22:53:12,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50788 states. [2021-11-05 22:53:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50788 to 31682. [2021-11-05 22:53:13,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31682 states, 31424 states have (on average 1.2780358961303462) internal successors, (40161), 31423 states have internal predecessors, (40161), 164 states have call successors, (164), 56 states have call predecessors, (164), 88 states have return successors, (1084), 202 states have call predecessors, (1084), 164 states have call successors, (1084) [2021-11-05 22:53:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31682 states to 31682 states and 41409 transitions. [2021-11-05 22:53:14,046 INFO L78 Accepts]: Start accepts. Automaton has 31682 states and 41409 transitions. Word has length 132 [2021-11-05 22:53:14,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:53:14,047 INFO L470 AbstractCegarLoop]: Abstraction has 31682 states and 41409 transitions. [2021-11-05 22:53:14,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:53:14,047 INFO L276 IsEmpty]: Start isEmpty. Operand 31682 states and 41409 transitions. [2021-11-05 22:53:14,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-05 22:53:14,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:53:14,074 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:53:14,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 22:53:14,074 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:53:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:53:14,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1733952768, now seen corresponding path program 1 times [2021-11-05 22:53:14,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:53:14,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771710148] [2021-11-05 22:53:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:53:14,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:53:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:53:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:14,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-05 22:53:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:53:14,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:53:14,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771710148] [2021-11-05 22:53:14,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771710148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:53:14,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:53:14,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 22:53:14,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289113723] [2021-11-05 22:53:14,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:53:14,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 22:53:14,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:53:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 22:53:14,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 22:53:14,311 INFO L87 Difference]: Start difference. First operand 31682 states and 41409 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 22:53:16,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:53:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:53:24,361 INFO L93 Difference]: Finished difference Result 64561 states and 85290 transitions. [2021-11-05 22:53:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 22:53:24,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 134 [2021-11-05 22:53:24,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:53:24,575 INFO L225 Difference]: With dead ends: 64561 [2021-11-05 22:53:24,575 INFO L226 Difference]: Without dead ends: 32901 [2021-11-05 22:53:25,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 22:53:25,033 INFO L933 BasicCegarLoop]: 6345 mSDtfsCounter, 557 mSDsluCounter, 10630 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7989.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 16975 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.82ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8833.71ms IncrementalHoareTripleChecker+Time [2021-11-05 22:53:25,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 16975 Invalid, 2450 Unknown, 0 Unchecked, 25.82ms Time], IncrementalHoareTripleChecker [29 Valid, 2420 Invalid, 1 Unknown, 0 Unchecked, 8833.71ms Time] [2021-11-05 22:53:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32901 states. [2021-11-05 22:53:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32901 to 31700. [2021-11-05 22:53:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31700 states, 31442 states have (on average 1.2778767253991477) internal successors, (40179), 31441 states have internal predecessors, (40179), 164 states have call successors, (164), 56 states have call predecessors, (164), 88 states have return successors, (1084), 202 states have call predecessors, (1084), 164 states have call successors, (1084) [2021-11-05 22:53:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31700 states to 31700 states and 41427 transitions. [2021-11-05 22:53:26,109 INFO L78 Accepts]: Start accepts. Automaton has 31700 states and 41427 transitions. Word has length 134 [2021-11-05 22:53:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:53:26,110 INFO L470 AbstractCegarLoop]: Abstraction has 31700 states and 41427 transitions. [2021-11-05 22:53:26,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 22:53:26,110 INFO L276 IsEmpty]: Start isEmpty. Operand 31700 states and 41427 transitions. [2021-11-05 22:53:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-05 22:53:26,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:53:26,138 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:53:26,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 22:53:26,138 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:53:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:53:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1344860802, now seen corresponding path program 1 times [2021-11-05 22:53:26,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:53:26,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525857469] [2021-11-05 22:53:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:53:26,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:53:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:53:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:27,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-05 22:53:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 22:53:27,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:53:27,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525857469] [2021-11-05 22:53:27,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525857469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:53:27,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:53:27,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 22:53:27,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128334220] [2021-11-05 22:53:27,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:53:27,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 22:53:27,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:53:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 22:53:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 22:53:27,266 INFO L87 Difference]: Start difference. First operand 31700 states and 41427 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 6 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 22:53:29,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:53:39,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:53:40,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:53:40,117 INFO L93 Difference]: Finished difference Result 64586 states and 84359 transitions. [2021-11-05 22:53:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 22:53:40,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 6 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 134 [2021-11-05 22:53:40,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:53:40,358 INFO L225 Difference]: With dead ends: 64586 [2021-11-05 22:53:40,358 INFO L226 Difference]: Without dead ends: 32901 [2021-11-05 22:53:40,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 161.03ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-05 22:53:40,740 INFO L933 BasicCegarLoop]: 6332 mSDtfsCounter, 5438 mSDsluCounter, 22992 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10107.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5438 SdHoareTripleChecker+Valid, 29324 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.20ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11214.52ms IncrementalHoareTripleChecker+Time [2021-11-05 22:53:40,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5438 Valid, 29324 Invalid, 3095 Unknown, 0 Unchecked, 45.20ms Time], IncrementalHoareTripleChecker [86 Valid, 3008 Invalid, 1 Unknown, 0 Unchecked, 11214.52ms Time] [2021-11-05 22:53:40,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32901 states. [2021-11-05 22:53:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32901 to 31700. [2021-11-05 22:53:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31700 states, 31442 states have (on average 1.2778449208065645) internal successors, (40178), 31441 states have internal predecessors, (40178), 164 states have call successors, (164), 56 states have call predecessors, (164), 88 states have return successors, (1084), 202 states have call predecessors, (1084), 164 states have call successors, (1084) [2021-11-05 22:53:41,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31700 states to 31700 states and 41426 transitions. [2021-11-05 22:53:41,961 INFO L78 Accepts]: Start accepts. Automaton has 31700 states and 41426 transitions. Word has length 134 [2021-11-05 22:53:41,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:53:41,962 INFO L470 AbstractCegarLoop]: Abstraction has 31700 states and 41426 transitions. [2021-11-05 22:53:41,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 6 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 22:53:41,962 INFO L276 IsEmpty]: Start isEmpty. Operand 31700 states and 41426 transitions. [2021-11-05 22:53:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-05 22:53:41,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:53:41,986 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:53:41,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 22:53:41,986 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:53:41,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:53:41,988 INFO L85 PathProgramCache]: Analyzing trace with hash 836329957, now seen corresponding path program 1 times [2021-11-05 22:53:41,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:53:41,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9079701] [2021-11-05 22:53:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:53:41,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:53:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:53:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-05 22:53:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-05 22:53:42,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:53:42,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9079701] [2021-11-05 22:53:42,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9079701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:53:42,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:53:42,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 22:53:42,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042007897] [2021-11-05 22:53:42,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:53:42,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 22:53:42,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:53:42,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 22:53:42,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-05 22:53:42,905 INFO L87 Difference]: Start difference. First operand 31700 states and 41426 transitions. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 10 states have internal predecessors, (125), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-05 22:53:44,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:53:54,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:53:54,344 INFO L93 Difference]: Finished difference Result 64973 states and 84883 transitions. [2021-11-05 22:53:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 22:53:54,345 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 10 states have internal predecessors, (125), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 134 [2021-11-05 22:53:54,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:53:54,593 INFO L225 Difference]: With dead ends: 64973 [2021-11-05 22:53:54,593 INFO L226 Difference]: Without dead ends: 33287 [2021-11-05 22:53:54,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 181.00ms TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-11-05 22:53:54,927 INFO L933 BasicCegarLoop]: 6392 mSDtfsCounter, 886 mSDsluCounter, 61485 mSDsCounter, 0 mSdLazyCounter, 4083 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8769.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 67877 SdHoareTripleChecker+Invalid, 4130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.29ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4083 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9870.88ms IncrementalHoareTripleChecker+Time [2021-11-05 22:53:54,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 67877 Invalid, 4130 Unknown, 0 Unchecked, 54.29ms Time], IncrementalHoareTripleChecker [46 Valid, 4083 Invalid, 1 Unknown, 0 Unchecked, 9870.88ms Time] [2021-11-05 22:53:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33287 states. [2021-11-05 22:53:55,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33287 to 31791. [2021-11-05 22:53:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31791 states, 31531 states have (on average 1.277124100091973) internal successors, (40269), 31524 states have internal predecessors, (40269), 164 states have call successors, (164), 56 states have call predecessors, (164), 90 states have return successors, (1116), 210 states have call predecessors, (1116), 164 states have call successors, (1116) [2021-11-05 22:53:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31791 states to 31791 states and 41549 transitions. [2021-11-05 22:53:56,270 INFO L78 Accepts]: Start accepts. Automaton has 31791 states and 41549 transitions. Word has length 134 [2021-11-05 22:53:56,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:53:56,270 INFO L470 AbstractCegarLoop]: Abstraction has 31791 states and 41549 transitions. [2021-11-05 22:53:56,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 10 states have internal predecessors, (125), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-05 22:53:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 31791 states and 41549 transitions. [2021-11-05 22:53:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 22:53:56,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:53:56,273 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:53:56,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 22:53:56,274 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:53:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:53:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1626006182, now seen corresponding path program 1 times [2021-11-05 22:53:56,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:53:56,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279625363] [2021-11-05 22:53:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:53:56,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:53:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:56,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:53:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:53:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:53:57,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:53:57,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279625363] [2021-11-05 22:53:57,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279625363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:53:57,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:53:57,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 22:53:57,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418083522] [2021-11-05 22:53:57,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:53:57,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 22:53:57,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:53:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 22:53:57,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-05 22:53:57,050 INFO L87 Difference]: Start difference. First operand 31791 states and 41549 transitions. Second operand has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 13 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:53:59,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:54:04,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:54:13,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:54:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:54:19,451 INFO L93 Difference]: Finished difference Result 75419 states and 99753 transitions. [2021-11-05 22:54:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-05 22:54:19,452 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 13 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137 [2021-11-05 22:54:19,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:54:19,750 INFO L225 Difference]: With dead ends: 75419 [2021-11-05 22:54:19,750 INFO L226 Difference]: Without dead ends: 43650 [2021-11-05 22:54:20,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1373.46ms TimeCoverageRelationStatistics Valid=463, Invalid=1699, Unknown=0, NotChecked=0, Total=2162 [2021-11-05 22:54:20,276 INFO L933 BasicCegarLoop]: 8853 mSDtfsCounter, 9489 mSDsluCounter, 85623 mSDsCounter, 0 mSdLazyCounter, 6512 mSolverCounterSat, 137 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16513.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9489 SdHoareTripleChecker+Valid, 94476 SdHoareTripleChecker+Invalid, 6651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.31ms SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 6512 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18536.64ms IncrementalHoareTripleChecker+Time [2021-11-05 22:54:20,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9489 Valid, 94476 Invalid, 6651 Unknown, 0 Unchecked, 105.31ms Time], IncrementalHoareTripleChecker [137 Valid, 6512 Invalid, 2 Unknown, 0 Unchecked, 18536.64ms Time] [2021-11-05 22:54:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43650 states. [2021-11-05 22:54:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43650 to 31879. [2021-11-05 22:54:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31879 states, 31619 states have (on average 1.2766058382618046) internal successors, (40365), 31612 states have internal predecessors, (40365), 164 states have call successors, (164), 56 states have call predecessors, (164), 90 states have return successors, (1116), 210 states have call predecessors, (1116), 164 states have call successors, (1116) [2021-11-05 22:54:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31879 states to 31879 states and 41645 transitions. [2021-11-05 22:54:21,721 INFO L78 Accepts]: Start accepts. Automaton has 31879 states and 41645 transitions. Word has length 137 [2021-11-05 22:54:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:54:21,722 INFO L470 AbstractCegarLoop]: Abstraction has 31879 states and 41645 transitions. [2021-11-05 22:54:21,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 13 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:54:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 31879 states and 41645 transitions. [2021-11-05 22:54:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-05 22:54:21,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:54:21,724 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:54:21,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 22:54:21,724 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:54:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:54:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1735898566, now seen corresponding path program 1 times [2021-11-05 22:54:21,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:54:21,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720152978] [2021-11-05 22:54:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:54:21,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:54:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:54:22,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:54:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:54:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:54:22,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:54:22,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720152978] [2021-11-05 22:54:22,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720152978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:54:22,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:54:22,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 22:54:22,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716614981] [2021-11-05 22:54:22,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:54:22,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 22:54:22,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:54:22,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 22:54:22,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 22:54:22,778 INFO L87 Difference]: Start difference. First operand 31879 states and 41645 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:54:24,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:54:27,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:54:35,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:54:36,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:54:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:54:38,873 INFO L93 Difference]: Finished difference Result 67717 states and 89243 transitions. [2021-11-05 22:54:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 22:54:38,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 140 [2021-11-05 22:54:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:54:39,274 INFO L225 Difference]: With dead ends: 67717 [2021-11-05 22:54:39,274 INFO L226 Difference]: Without dead ends: 35860 [2021-11-05 22:54:39,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.70ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-05 22:54:39,514 INFO L933 BasicCegarLoop]: 6340 mSDtfsCounter, 4229 mSDsluCounter, 29304 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 43 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12909.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4229 SdHoareTripleChecker+Valid, 35644 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.61ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14164.12ms IncrementalHoareTripleChecker+Time [2021-11-05 22:54:39,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4229 Valid, 35644 Invalid, 3061 Unknown, 0 Unchecked, 42.61ms Time], IncrementalHoareTripleChecker [43 Valid, 3015 Invalid, 3 Unknown, 0 Unchecked, 14164.12ms Time] [2021-11-05 22:54:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35860 states. [2021-11-05 22:54:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35860 to 31905. [2021-11-05 22:54:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31905 states, 31640 states have (on average 1.2764222503160556) internal successors, (40386), 31638 states have internal predecessors, (40386), 164 states have call successors, (164), 56 states have call predecessors, (164), 95 states have return successors, (1132), 210 states have call predecessors, (1132), 164 states have call successors, (1132) [2021-11-05 22:54:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31905 states to 31905 states and 41682 transitions. [2021-11-05 22:54:40,954 INFO L78 Accepts]: Start accepts. Automaton has 31905 states and 41682 transitions. Word has length 140 [2021-11-05 22:54:40,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:54:40,955 INFO L470 AbstractCegarLoop]: Abstraction has 31905 states and 41682 transitions. [2021-11-05 22:54:40,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:54:40,955 INFO L276 IsEmpty]: Start isEmpty. Operand 31905 states and 41682 transitions. [2021-11-05 22:54:40,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-05 22:54:40,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:54:40,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:54:40,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 22:54:40,958 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:54:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:54:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash -929690000, now seen corresponding path program 1 times [2021-11-05 22:54:40,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:54:40,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433833006] [2021-11-05 22:54:40,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:54:40,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:54:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:54:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:54:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:54:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:54:41,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:54:41,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433833006] [2021-11-05 22:54:41,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433833006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:54:41,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:54:41,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 22:54:41,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723477171] [2021-11-05 22:54:41,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:54:41,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 22:54:41,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:54:41,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 22:54:41,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 22:54:41,997 INFO L87 Difference]: Start difference. First operand 31905 states and 41682 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:54:44,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:54:54,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:54:54,166 INFO L93 Difference]: Finished difference Result 67441 states and 88750 transitions. [2021-11-05 22:54:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 22:54:54,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 146 [2021-11-05 22:54:54,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:54:54,429 INFO L225 Difference]: With dead ends: 67441 [2021-11-05 22:54:54,429 INFO L226 Difference]: Without dead ends: 35558 [2021-11-05 22:54:54,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 94.36ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-05 22:54:54,910 INFO L933 BasicCegarLoop]: 6342 mSDtfsCounter, 4199 mSDsluCounter, 29309 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8977.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4199 SdHoareTripleChecker+Valid, 35651 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.94ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10154.98ms IncrementalHoareTripleChecker+Time [2021-11-05 22:54:54,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4199 Valid, 35651 Invalid, 3062 Unknown, 0 Unchecked, 41.94ms Time], IncrementalHoareTripleChecker [45 Valid, 3016 Invalid, 1 Unknown, 0 Unchecked, 10154.98ms Time] [2021-11-05 22:54:54,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35558 states. [2021-11-05 22:54:56,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35558 to 31923. [2021-11-05 22:54:56,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31923 states, 31657 states have (on average 1.2762738098998643) internal successors, (40403), 31656 states have internal predecessors, (40403), 164 states have call successors, (164), 56 states have call predecessors, (164), 96 states have return successors, (1132), 210 states have call predecessors, (1132), 164 states have call successors, (1132) [2021-11-05 22:54:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31923 states to 31923 states and 41699 transitions. [2021-11-05 22:54:56,491 INFO L78 Accepts]: Start accepts. Automaton has 31923 states and 41699 transitions. Word has length 146 [2021-11-05 22:54:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:54:56,491 INFO L470 AbstractCegarLoop]: Abstraction has 31923 states and 41699 transitions. [2021-11-05 22:54:56,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:54:56,491 INFO L276 IsEmpty]: Start isEmpty. Operand 31923 states and 41699 transitions. [2021-11-05 22:54:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-05 22:54:56,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:54:56,496 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:54:56,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 22:54:56,496 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:54:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:54:56,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1625635303, now seen corresponding path program 1 times [2021-11-05 22:54:56,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:54:56,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315025703] [2021-11-05 22:54:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:54:56,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:54:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:54:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:54:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:54:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:54:57,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:54:57,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315025703] [2021-11-05 22:54:57,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315025703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:54:57,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:54:57,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 22:54:57,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189157280] [2021-11-05 22:54:57,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:54:57,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 22:54:57,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:54:57,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 22:54:57,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-05 22:54:57,532 INFO L87 Difference]: Start difference. First operand 31923 states and 41699 transitions. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 11 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:54:59,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:55:13,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:55:13,749 INFO L93 Difference]: Finished difference Result 68421 states and 90467 transitions. [2021-11-05 22:55:13,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-05 22:55:13,750 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 11 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2021-11-05 22:55:13,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:55:13,988 INFO L225 Difference]: With dead ends: 68421 [2021-11-05 22:55:13,989 INFO L226 Difference]: Without dead ends: 36520 [2021-11-05 22:55:14,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 673.10ms TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 22:55:14,248 INFO L933 BasicCegarLoop]: 7273 mSDtfsCounter, 5987 mSDsluCounter, 53556 mSDsCounter, 0 mSdLazyCounter, 4912 mSolverCounterSat, 135 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11659.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5987 SdHoareTripleChecker+Valid, 60829 SdHoareTripleChecker+Invalid, 5048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.52ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 4912 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13336.36ms IncrementalHoareTripleChecker+Time [2021-11-05 22:55:14,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5987 Valid, 60829 Invalid, 5048 Unknown, 0 Unchecked, 70.52ms Time], IncrementalHoareTripleChecker [135 Valid, 4912 Invalid, 1 Unknown, 0 Unchecked, 13336.36ms Time] [2021-11-05 22:55:14,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36520 states. [2021-11-05 22:55:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36520 to 31795. [2021-11-05 22:55:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31795 states, 31529 states have (on average 1.2768879444321102) internal successors, (40259), 31528 states have internal predecessors, (40259), 164 states have call successors, (164), 56 states have call predecessors, (164), 96 states have return successors, (1132), 210 states have call predecessors, (1132), 164 states have call successors, (1132) [2021-11-05 22:55:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31795 states to 31795 states and 41555 transitions. [2021-11-05 22:55:15,918 INFO L78 Accepts]: Start accepts. Automaton has 31795 states and 41555 transitions. Word has length 161 [2021-11-05 22:55:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:55:15,918 INFO L470 AbstractCegarLoop]: Abstraction has 31795 states and 41555 transitions. [2021-11-05 22:55:15,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 11 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:55:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 31795 states and 41555 transitions. [2021-11-05 22:55:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-05 22:55:15,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:55:15,924 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:55:15,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 22:55:15,924 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:55:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:55:15,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2141966795, now seen corresponding path program 1 times [2021-11-05 22:55:15,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:55:15,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502472601] [2021-11-05 22:55:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:55:15,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:55:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:55:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:55:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:55:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:55:16,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:55:16,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502472601] [2021-11-05 22:55:16,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502472601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:55:16,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:55:16,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 22:55:16,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064117831] [2021-11-05 22:55:16,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:55:16,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 22:55:16,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:55:16,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 22:55:16,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 22:55:16,489 INFO L87 Difference]: Start difference. First operand 31795 states and 41555 transitions. Second operand has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:55:18,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:55:28,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:55:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:55:32,888 INFO L93 Difference]: Finished difference Result 82661 states and 109339 transitions. [2021-11-05 22:55:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 22:55:32,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 162 [2021-11-05 22:55:32,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:55:33,277 INFO L225 Difference]: With dead ends: 82661 [2021-11-05 22:55:33,277 INFO L226 Difference]: Without dead ends: 50888 [2021-11-05 22:55:33,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 149.25ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-11-05 22:55:33,898 INFO L933 BasicCegarLoop]: 6326 mSDtfsCounter, 8934 mSDsluCounter, 36882 mSDsCounter, 0 mSdLazyCounter, 3413 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11067.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8936 SdHoareTripleChecker+Valid, 43208 SdHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.22ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3413 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12454.92ms IncrementalHoareTripleChecker+Time [2021-11-05 22:55:33,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8936 Valid, 43208 Invalid, 3481 Unknown, 0 Unchecked, 53.22ms Time], IncrementalHoareTripleChecker [67 Valid, 3413 Invalid, 1 Unknown, 0 Unchecked, 12454.92ms Time] [2021-11-05 22:55:33,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50888 states. [2021-11-05 22:55:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50888 to 31835. [2021-11-05 22:55:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31835 states, 31569 states have (on average 1.2765371091893947) internal successors, (40299), 31568 states have internal predecessors, (40299), 164 states have call successors, (164), 56 states have call predecessors, (164), 96 states have return successors, (1132), 210 states have call predecessors, (1132), 164 states have call successors, (1132) [2021-11-05 22:55:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31835 states to 31835 states and 41595 transitions. [2021-11-05 22:55:35,638 INFO L78 Accepts]: Start accepts. Automaton has 31835 states and 41595 transitions. Word has length 162 [2021-11-05 22:55:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:55:35,638 INFO L470 AbstractCegarLoop]: Abstraction has 31835 states and 41595 transitions. [2021-11-05 22:55:35,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:55:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 31835 states and 41595 transitions. [2021-11-05 22:55:35,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-05 22:55:35,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:55:35,643 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:55:35,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 22:55:35,643 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:55:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:55:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash 196310682, now seen corresponding path program 1 times [2021-11-05 22:55:35,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:55:35,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261732024] [2021-11-05 22:55:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:55:35,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:55:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:55:36,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:55:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:55:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:55:36,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:55:36,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261732024] [2021-11-05 22:55:36,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261732024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:55:36,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:55:36,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 22:55:36,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255789900] [2021-11-05 22:55:36,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:55:36,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 22:55:36,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:55:36,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 22:55:36,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 22:55:36,430 INFO L87 Difference]: Start difference. First operand 31835 states and 41595 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:55:38,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:55:50,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:55:50,360 INFO L93 Difference]: Finished difference Result 67119 states and 88076 transitions. [2021-11-05 22:55:50,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 22:55:50,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 162 [2021-11-05 22:55:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:55:50,650 INFO L225 Difference]: With dead ends: 67119 [2021-11-05 22:55:50,650 INFO L226 Difference]: Without dead ends: 35306 [2021-11-05 22:55:51,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 83.47ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-05 22:55:51,036 INFO L933 BasicCegarLoop]: 7342 mSDtfsCounter, 3873 mSDsluCounter, 30696 mSDsCounter, 0 mSdLazyCounter, 3347 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10181.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3873 SdHoareTripleChecker+Valid, 38038 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.97ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11708.57ms IncrementalHoareTripleChecker+Time [2021-11-05 22:55:51,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3873 Valid, 38038 Invalid, 3388 Unknown, 0 Unchecked, 44.97ms Time], IncrementalHoareTripleChecker [40 Valid, 3347 Invalid, 1 Unknown, 0 Unchecked, 11708.57ms Time] [2021-11-05 22:55:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35306 states. [2021-11-05 22:55:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35306 to 31912. [2021-11-05 22:55:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31912 states, 31645 states have (on average 1.276157370832675) internal successors, (40384), 31645 states have internal predecessors, (40384), 164 states have call successors, (164), 56 states have call predecessors, (164), 97 states have return successors, (1140), 210 states have call predecessors, (1140), 164 states have call successors, (1140) [2021-11-05 22:55:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31912 states to 31912 states and 41688 transitions. [2021-11-05 22:55:52,862 INFO L78 Accepts]: Start accepts. Automaton has 31912 states and 41688 transitions. Word has length 162 [2021-11-05 22:55:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:55:52,863 INFO L470 AbstractCegarLoop]: Abstraction has 31912 states and 41688 transitions. [2021-11-05 22:55:52,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:55:52,863 INFO L276 IsEmpty]: Start isEmpty. Operand 31912 states and 41688 transitions. [2021-11-05 22:55:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-05 22:55:52,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:55:52,876 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:55:52,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 22:55:52,877 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:55:52,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:55:52,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2031223001, now seen corresponding path program 1 times [2021-11-05 22:55:52,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:55:52,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535980167] [2021-11-05 22:55:52,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:55:52,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:55:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:55:53,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:55:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:55:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:55:53,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:55:53,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535980167] [2021-11-05 22:55:53,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535980167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:55:53,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:55:53,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 22:55:53,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999022546] [2021-11-05 22:55:53,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:55:53,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 22:55:53,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:55:53,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 22:55:53,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 22:55:53,934 INFO L87 Difference]: Start difference. First operand 31912 states and 41688 transitions. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 8 states have internal predecessors, (171), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:55:55,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:55:58,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:56:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:56:15,899 INFO L93 Difference]: Finished difference Result 79270 states and 104110 transitions. [2021-11-05 22:56:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-05 22:56:15,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 8 states have internal predecessors, (171), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-11-05 22:56:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:56:16,262 INFO L225 Difference]: With dead ends: 79270 [2021-11-05 22:56:16,262 INFO L226 Difference]: Without dead ends: 47380 [2021-11-05 22:56:16,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 301.40ms TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2021-11-05 22:56:16,529 INFO L933 BasicCegarLoop]: 6320 mSDtfsCounter, 10213 mSDsluCounter, 41381 mSDsCounter, 0 mSdLazyCounter, 5233 mSolverCounterSat, 107 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15567.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10214 SdHoareTripleChecker+Valid, 47701 SdHoareTripleChecker+Invalid, 5342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.35ms SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 5233 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17713.59ms IncrementalHoareTripleChecker+Time [2021-11-05 22:56:16,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10214 Valid, 47701 Invalid, 5342 Unknown, 0 Unchecked, 65.35ms Time], IncrementalHoareTripleChecker [107 Valid, 5233 Invalid, 2 Unknown, 0 Unchecked, 17713.59ms Time] [2021-11-05 22:56:16,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47380 states. [2021-11-05 22:56:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47380 to 32527. [2021-11-05 22:56:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32527 states, 32251 states have (on average 1.2746271433443925) internal successors, (41108), 32260 states have internal predecessors, (41108), 164 states have call successors, (164), 56 states have call predecessors, (164), 106 states have return successors, (1180), 210 states have call predecessors, (1180), 164 states have call successors, (1180) [2021-11-05 22:56:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32527 states to 32527 states and 42452 transitions. [2021-11-05 22:56:19,197 INFO L78 Accepts]: Start accepts. Automaton has 32527 states and 42452 transitions. Word has length 173 [2021-11-05 22:56:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:56:19,197 INFO L470 AbstractCegarLoop]: Abstraction has 32527 states and 42452 transitions. [2021-11-05 22:56:19,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 8 states have internal predecessors, (171), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 22:56:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 32527 states and 42452 transitions. [2021-11-05 22:56:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-05 22:56:19,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:56:19,215 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 22:56:19,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 22:56:19,215 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 22:56:19,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:56:19,216 INFO L85 PathProgramCache]: Analyzing trace with hash 922519200, now seen corresponding path program 1 times [2021-11-05 22:56:19,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:56:19,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310186069] [2021-11-05 22:56:19,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:56:19,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:56:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:56:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-05 22:56:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:56:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:56:19,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:56:19,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310186069] [2021-11-05 22:56:19,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310186069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:56:19,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:56:19,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 22:56:19,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669850565] [2021-11-05 22:56:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:56:19,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 22:56:19,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:56:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 22:56:19,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 22:56:19,933 INFO L87 Difference]: Start difference. First operand 32527 states and 42452 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)