./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0 --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 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:29:17,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:29:17,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:29:17,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:29:17,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:29:17,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:29:17,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:29:17,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:29:17,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:29:17,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:29:17,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:29:17,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:29:17,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:29:17,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:29:17,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:29:17,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:29:17,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:29:17,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:29:17,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:29:17,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:29:17,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:29:17,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:29:17,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:29:17,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:29:17,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:29:17,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:29:17,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:29:17,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:29:17,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:29:17,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:29:17,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:29:17,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:29:17,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:29:17,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:29:17,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:29:17,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:29:17,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:29:17,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:29:17,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:29:17,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:29:17,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:29:17,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 14:29:17,852 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:29:17,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:29:17,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:29:17,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:29:17,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:29:17,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:29:17,856 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:29:17,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:29:17,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:29:17,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:29:17,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:29:17,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:29:17,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:29:17,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:29:17,859 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:29:17,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:29:17,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:29:17,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:29:17,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:29:17,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:29:17,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:29:17,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:29:17,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:29:17,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:29:17,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:29:17,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:29:17,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:29:17,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:29:17,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:29:17,866 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 [2021-11-22 14:29:18,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:29:18,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:29:18,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:29:18,181 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:29:18,182 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:29:18,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-22 14:29:18,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/data/1d8f2e0c1/418f52f907eb4922b5076a58ef05e66b/FLAGb792dabe3 [2021-11-22 14:29:19,245 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:29:19,246 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-22 14:29:19,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/data/1d8f2e0c1/418f52f907eb4922b5076a58ef05e66b/FLAGb792dabe3 [2021-11-22 14:29:19,732 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/data/1d8f2e0c1/418f52f907eb4922b5076a58ef05e66b [2021-11-22 14:29:19,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:29:19,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:29:19,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:29:19,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:29:19,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:29:19,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:29:19" (1/1) ... [2021-11-22 14:29:19,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c4ed3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:19, skipping insertion in model container [2021-11-22 14:29:19,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:29:19" (1/1) ... [2021-11-22 14:29:19,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:29:19,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:29:21,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i[230653,230666] [2021-11-22 14:29:21,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:29:22,011 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:29:22,438 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i[230653,230666] [2021-11-22 14:29:22,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:29:22,615 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:29:22,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22 WrapperNode [2021-11-22 14:29:22,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:29:22,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:29:22,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:29:22,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:29:22,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (1/1) ... [2021-11-22 14:29:22,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (1/1) ... [2021-11-22 14:29:26,260 INFO L137 Inliner]: procedures = 258, calls = 1568, calls flagged for inlining = 505, calls inlined = 13113, statements flattened = 168397 [2021-11-22 14:29:26,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:29:26,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:29:26,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:29:26,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:29:26,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (1/1) ... [2021-11-22 14:29:26,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (1/1) ... [2021-11-22 14:29:27,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (1/1) ... [2021-11-22 14:29:27,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (1/1) ... [2021-11-22 14:29:30,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (1/1) ... [2021-11-22 14:29:30,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (1/1) ... [2021-11-22 14:29:30,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (1/1) ... [2021-11-22 14:29:31,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:29:31,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:29:31,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:29:31,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:29:31,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (1/1) ... [2021-11-22 14:29:31,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:29:31,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:29:31,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:29:31,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:29:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-22 14:29:31,708 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_ctr [2021-11-22 14:29:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_ctr [2021-11-22 14:29:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure parse_path_selector [2021-11-22 14:29:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_path_selector [2021-11-22 14:29:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_dtr [2021-11-22 14:29:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_dtr [2021-11-22 14:29:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure free_priority_group [2021-11-22 14:29:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure free_priority_group [2021-11-22 14:29:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:29:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 14:29:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:29:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 14:29:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:29:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:29:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 14:29:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:29:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-22 14:29:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-22 14:29:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 14:29:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 14:29:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure parse_priority_group [2021-11-22 14:29:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_priority_group [2021-11-22 14:29:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 14:29:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 14:29:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure free_multipath [2021-11-22 14:29:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure free_multipath [2021-11-22 14:29:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-22 14:29:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:29:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:29:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:29:33,451 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:29:33,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:30:27,631 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:30:27,755 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:30:27,755 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 14:30:27,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:30:27 BoogieIcfgContainer [2021-11-22 14:30:27,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:30:27,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:30:27,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:30:27,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:30:27,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:29:19" (1/3) ... [2021-11-22 14:30:27,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5fecc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:30:27, skipping insertion in model container [2021-11-22 14:30:27,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:29:22" (2/3) ... [2021-11-22 14:30:27,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5fecc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:30:27, skipping insertion in model container [2021-11-22 14:30:27,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:30:27" (3/3) ... [2021-11-22 14:30:27,795 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-22 14:30:27,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:30:27,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-22 14:30:27,956 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:30:27,962 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 [2021-11-22 14:30:27,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-22 14:30:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 28612 states, 28584 states have (on average 1.3886789812482507) internal successors, (39694), 28589 states have internal predecessors, (39694), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-22 14:30:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-22 14:30:28,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:30:28,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:30:28,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:30:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:30:28,387 INFO L85 PathProgramCache]: Analyzing trace with hash 113870988, now seen corresponding path program 1 times [2021-11-22 14:30:28,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:30:28,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788379812] [2021-11-22 14:30:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:30:28,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:30:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:30:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:30:28,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:30:28,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788379812] [2021-11-22 14:30:28,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788379812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:30:28,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:30:28,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:30:28,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599439309] [2021-11-22 14:30:28,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:30:28,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:30:28,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:30:28,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:30:28,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:30:29,015 INFO L87 Difference]: Start difference. First operand has 28612 states, 28584 states have (on average 1.3886789812482507) internal successors, (39694), 28589 states have internal predecessors, (39694), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 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) [2021-11-22 14:30:30,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:30:30,434 INFO L93 Difference]: Finished difference Result 57216 states and 79454 transitions. [2021-11-22 14:30:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:30:30,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 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 97 [2021-11-22 14:30:30,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:30:30,667 INFO L225 Difference]: With dead ends: 57216 [2021-11-22 14:30:30,667 INFO L226 Difference]: Without dead ends: 28594 [2021-11-22 14:30:30,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:30:30,785 INFO L933 BasicCegarLoop]: 39627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:30:30,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39627 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:30:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28594 states. [2021-11-22 14:30:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28594 to 28594. [2021-11-22 14:30:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28594 states, 28567 states have (on average 1.385269716806105) internal successors, (39573), 28571 states have internal predecessors, (39573), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-22 14:30:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28594 states to 28594 states and 39603 transitions. [2021-11-22 14:30:32,396 INFO L78 Accepts]: Start accepts. Automaton has 28594 states and 39603 transitions. Word has length 97 [2021-11-22 14:30:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:30:32,397 INFO L470 AbstractCegarLoop]: Abstraction has 28594 states and 39603 transitions. [2021-11-22 14:30:32,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 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) [2021-11-22 14:30:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 28594 states and 39603 transitions. [2021-11-22 14:30:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-22 14:30:32,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:30:32,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:30:32,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:30:32,410 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:30:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:30:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1781201098, now seen corresponding path program 1 times [2021-11-22 14:30:32,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:30:32,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573939773] [2021-11-22 14:30:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:30:32,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:30:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:30:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:30:32,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:30:32,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573939773] [2021-11-22 14:30:32,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573939773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:30:32,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:30:32,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:30:32,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177328067] [2021-11-22 14:30:32,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:30:32,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:30:32,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:30:32,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:30:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:30:32,739 INFO L87 Difference]: Start difference. First operand 28594 states and 39603 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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) [2021-11-22 14:30:35,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:30:35,102 INFO L93 Difference]: Finished difference Result 85617 states and 118647 transitions. [2021-11-22 14:30:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:30:35,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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 97 [2021-11-22 14:30:35,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:30:35,318 INFO L225 Difference]: With dead ends: 85617 [2021-11-22 14:30:35,319 INFO L226 Difference]: Without dead ends: 52596 [2021-11-22 14:30:35,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:30:35,419 INFO L933 BasicCegarLoop]: 39617 mSDtfsCounter, 39498 mSDsluCounter, 39507 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39498 SdHoareTripleChecker+Valid, 79124 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:30:35,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39498 Valid, 79124 Invalid, 20 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:30:35,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52596 states. [2021-11-22 14:30:37,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52596 to 52590. [2021-11-22 14:30:37,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52590 states, 52540 states have (on average 1.3862580890749905) internal successors, (72834), 52545 states have internal predecessors, (72834), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-22 14:30:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52590 states to 52590 states and 72899 transitions. [2021-11-22 14:30:37,786 INFO L78 Accepts]: Start accepts. Automaton has 52590 states and 72899 transitions. Word has length 97 [2021-11-22 14:30:37,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:30:37,790 INFO L470 AbstractCegarLoop]: Abstraction has 52590 states and 72899 transitions. [2021-11-22 14:30:37,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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) [2021-11-22 14:30:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 52590 states and 72899 transitions. [2021-11-22 14:30:37,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 14:30:37,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:30:37,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:30:37,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:30:37,853 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:30:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:30:37,854 INFO L85 PathProgramCache]: Analyzing trace with hash 184020822, now seen corresponding path program 1 times [2021-11-22 14:30:37,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:30:37,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468663011] [2021-11-22 14:30:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:30:37,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:30:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:30:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-22 14:30:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:30:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:30:38,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:30:38,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468663011] [2021-11-22 14:30:38,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468663011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:30:38,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:30:38,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:30:38,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112015854] [2021-11-22 14:30:38,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:30:38,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:30:38,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:30:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:30:38,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:30:38,242 INFO L87 Difference]: Start difference. First operand 52590 states and 72899 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:30:52,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:30:53,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:31:22,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:22,383 INFO L93 Difference]: Finished difference Result 115488 states and 160016 transitions. [2021-11-22 14:31:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:31:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130 [2021-11-22 14:31:22,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:22,703 INFO L225 Difference]: With dead ends: 115488 [2021-11-22 14:31:22,703 INFO L226 Difference]: Without dead ends: 62978 [2021-11-22 14:31:22,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:31:22,848 INFO L933 BasicCegarLoop]: 45776 mSDtfsCounter, 10397 mSDsluCounter, 65225 mSDsCounter, 0 mSdLazyCounter, 20104 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10397 SdHoareTripleChecker+Valid, 111001 SdHoareTripleChecker+Invalid, 20123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 20104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:22,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10397 Valid, 111001 Invalid, 20123 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [19 Valid, 20104 Invalid, 0 Unknown, 0 Unchecked, 41.7s Time] [2021-11-22 14:31:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62978 states. [2021-11-22 14:31:24,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62978 to 58342. [2021-11-22 14:31:24,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58342 states, 58292 states have (on average 1.3856446853770672) internal successors, (80772), 58297 states have internal predecessors, (80772), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-22 14:31:25,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58342 states to 58342 states and 80837 transitions. [2021-11-22 14:31:25,311 INFO L78 Accepts]: Start accepts. Automaton has 58342 states and 80837 transitions. Word has length 130 [2021-11-22 14:31:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:25,313 INFO L470 AbstractCegarLoop]: Abstraction has 58342 states and 80837 transitions. [2021-11-22 14:31:25,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:31:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 58342 states and 80837 transitions. [2021-11-22 14:31:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-22 14:31:25,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:25,406 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] [2021-11-22 14:31:25,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:31:25,407 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:31:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:25,408 INFO L85 PathProgramCache]: Analyzing trace with hash -285480634, now seen corresponding path program 1 times [2021-11-22 14:31:25,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:25,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213263280] [2021-11-22 14:31:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:25,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:25,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-22 14:31:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:25,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:25,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213263280] [2021-11-22 14:31:25,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213263280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:25,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:25,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:31:25,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923864026] [2021-11-22 14:31:25,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:25,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:31:25,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:31:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:31:25,763 INFO L87 Difference]: Start difference. First operand 58342 states and 80837 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:31:45,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:31:47,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:32:01,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:32:11,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:32:11,044 INFO L93 Difference]: Finished difference Result 116747 states and 161761 transitions. [2021-11-22 14:32:11,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:32:11,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-11-22 14:32:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:32:11,308 INFO L225 Difference]: With dead ends: 116747 [2021-11-22 14:32:11,308 INFO L226 Difference]: Without dead ends: 58479 [2021-11-22 14:32:11,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:32:11,443 INFO L933 BasicCegarLoop]: 39560 mSDtfsCounter, 145 mSDsluCounter, 101616 mSDsCounter, 0 mSdLazyCounter, 17211 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 141176 SdHoareTripleChecker+Invalid, 17229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 17211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:32:11,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 141176 Invalid, 17229 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [18 Valid, 17211 Invalid, 0 Unknown, 0 Unchecked, 42.7s Time] [2021-11-22 14:32:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58479 states. [2021-11-22 14:32:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58479 to 58345. [2021-11-22 14:32:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58345 states, 58295 states have (on average 1.3855905309203191) internal successors, (80773), 58300 states have internal predecessors, (80773), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-22 14:32:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58345 states to 58345 states and 80838 transitions. [2021-11-22 14:32:13,349 INFO L78 Accepts]: Start accepts. Automaton has 58345 states and 80838 transitions. Word has length 149 [2021-11-22 14:32:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:32:13,351 INFO L470 AbstractCegarLoop]: Abstraction has 58345 states and 80838 transitions. [2021-11-22 14:32:13,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:32:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 58345 states and 80838 transitions. [2021-11-22 14:32:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 14:32:13,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:32:13,421 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] [2021-11-22 14:32:13,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:32:13,422 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:32:13,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:32:13,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1981068589, now seen corresponding path program 1 times [2021-11-22 14:32:13,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:32:13,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757237458] [2021-11-22 14:32:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:32:13,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:32:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:32:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-22 14:32:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:32:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:32:14,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:32:14,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757237458] [2021-11-22 14:32:14,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757237458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:32:14,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:32:14,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:32:14,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482459144] [2021-11-22 14:32:14,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:32:14,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:32:14,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:32:14,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:32:14,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:32:14,328 INFO L87 Difference]: Start difference. First operand 58345 states and 80838 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:32:30,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:32:45,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:32:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:32:53,388 INFO L93 Difference]: Finished difference Result 116761 states and 161771 transitions. [2021-11-22 14:32:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:32:53,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-11-22 14:32:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:32:53,625 INFO L225 Difference]: With dead ends: 116761 [2021-11-22 14:32:53,625 INFO L226 Difference]: Without dead ends: 58486 [2021-11-22 14:32:53,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:32:53,758 INFO L933 BasicCegarLoop]: 39563 mSDtfsCounter, 152 mSDsluCounter, 141174 mSDsCounter, 0 mSdLazyCounter, 17279 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 180737 SdHoareTripleChecker+Invalid, 17297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 17279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:32:53,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 180737 Invalid, 17297 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [18 Valid, 17279 Invalid, 0 Unknown, 0 Unchecked, 36.8s Time] [2021-11-22 14:32:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58486 states. [2021-11-22 14:32:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58486 to 58347. [2021-11-22 14:32:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58347 states, 58297 states have (on average 1.3855429953513902) internal successors, (80773), 58302 states have internal predecessors, (80773), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-22 14:32:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58347 states to 58347 states and 80838 transitions. [2021-11-22 14:32:55,579 INFO L78 Accepts]: Start accepts. Automaton has 58347 states and 80838 transitions. Word has length 153 [2021-11-22 14:32:55,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:32:55,580 INFO L470 AbstractCegarLoop]: Abstraction has 58347 states and 80838 transitions. [2021-11-22 14:32:55,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:32:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 58347 states and 80838 transitions. [2021-11-22 14:32:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 14:32:55,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:32:55,628 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] [2021-11-22 14:32:55,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:32:55,629 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:32:55,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:32:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1669601298, now seen corresponding path program 1 times [2021-11-22 14:32:55,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:32:55,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844541802] [2021-11-22 14:32:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:32:55,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:32:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:32:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-22 14:32:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:32:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:32:56,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:32:56,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844541802] [2021-11-22 14:32:56,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844541802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:32:56,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:32:56,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:32:56,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030832215] [2021-11-22 14:32:56,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:32:56,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:32:56,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:32:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:32:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:32:56,638 INFO L87 Difference]: Start difference. First operand 58347 states and 80838 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:33:51,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:33:51,220 INFO L93 Difference]: Finished difference Result 143741 states and 199522 transitions. [2021-11-22 14:33:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 14:33:51,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-11-22 14:33:51,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:33:51,713 INFO L225 Difference]: With dead ends: 143741 [2021-11-22 14:33:51,713 INFO L226 Difference]: Without dead ends: 85466 [2021-11-22 14:33:51,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:33:51,847 INFO L933 BasicCegarLoop]: 59841 mSDtfsCounter, 21782 mSDsluCounter, 193113 mSDsCounter, 0 mSdLazyCounter, 26182 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21787 SdHoareTripleChecker+Valid, 252954 SdHoareTripleChecker+Invalid, 26227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 26182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:33:51,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21787 Valid, 252954 Invalid, 26227 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [45 Valid, 26182 Invalid, 0 Unknown, 0 Unchecked, 51.0s Time] [2021-11-22 14:33:51,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85466 states. [2021-11-22 14:33:53,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85466 to 58350. [2021-11-22 14:33:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58350 states, 58300 states have (on average 1.3854888507718697) internal successors, (80774), 58305 states have internal predecessors, (80774), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-22 14:33:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58350 states to 58350 states and 80839 transitions. [2021-11-22 14:33:53,619 INFO L78 Accepts]: Start accepts. Automaton has 58350 states and 80839 transitions. Word has length 153 [2021-11-22 14:33:53,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:33:53,620 INFO L470 AbstractCegarLoop]: Abstraction has 58350 states and 80839 transitions. [2021-11-22 14:33:53,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:33:53,620 INFO L276 IsEmpty]: Start isEmpty. Operand 58350 states and 80839 transitions. [2021-11-22 14:33:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-22 14:33:53,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:33:53,658 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] [2021-11-22 14:33:53,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:33:53,659 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:33:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:33:53,660 INFO L85 PathProgramCache]: Analyzing trace with hash 792355530, now seen corresponding path program 1 times [2021-11-22 14:33:53,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:33:53,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885506421] [2021-11-22 14:33:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:33:53,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:33:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:33:54,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-22 14:33:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:33:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 14:33:54,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:33:54,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885506421] [2021-11-22 14:33:54,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885506421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:33:54,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:33:54,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 14:33:54,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487594011] [2021-11-22 14:33:54,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:33:54,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 14:33:54,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:33:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 14:33:54,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:33:54,203 INFO L87 Difference]: Start difference. First operand 58350 states and 80839 transitions. Second operand has 10 states, 10 states have (on average 15.2) internal successors, (152), 9 states have internal predecessors, (152), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:34:11,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:34:34,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:34:34,035 INFO L93 Difference]: Finished difference Result 117043 states and 162181 transitions. [2021-11-22 14:34:34,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 14:34:34,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.2) internal successors, (152), 9 states have internal predecessors, (152), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2021-11-22 14:34:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:34:34,158 INFO L225 Difference]: With dead ends: 117043 [2021-11-22 14:34:34,158 INFO L226 Difference]: Without dead ends: 58773 [2021-11-22 14:34:34,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-22 14:34:34,270 INFO L933 BasicCegarLoop]: 39635 mSDtfsCounter, 467 mSDsluCounter, 299797 mSDsCounter, 0 mSdLazyCounter, 17696 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 339432 SdHoareTripleChecker+Invalid, 17732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 17696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:34:34,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 339432 Invalid, 17732 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [36 Valid, 17696 Invalid, 0 Unknown, 0 Unchecked, 37.0s Time] [2021-11-22 14:34:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58773 states. [2021-11-22 14:34:35,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58773 to 58368. [2021-11-22 14:34:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58368 states, 58317 states have (on average 1.3853764768420873) internal successors, (80791), 58323 states have internal predecessors, (80791), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-22 14:34:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58368 states to 58368 states and 80858 transitions. [2021-11-22 14:34:35,998 INFO L78 Accepts]: Start accepts. Automaton has 58368 states and 80858 transitions. Word has length 159 [2021-11-22 14:34:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:34:35,999 INFO L470 AbstractCegarLoop]: Abstraction has 58368 states and 80858 transitions. [2021-11-22 14:34:35,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.2) internal successors, (152), 9 states have internal predecessors, (152), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:34:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 58368 states and 80858 transitions. [2021-11-22 14:34:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-22 14:34:36,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:34:36,040 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] [2021-11-22 14:34:36,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 14:34:36,040 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:34:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:34:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1490916962, now seen corresponding path program 1 times [2021-11-22 14:34:36,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:34:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180219770] [2021-11-22 14:34:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:34:36,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:34:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:34:36,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-22 14:34:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:34:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 14:34:36,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:34:36,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180219770] [2021-11-22 14:34:36,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180219770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:34:36,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:34:36,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:34:36,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143131369] [2021-11-22 14:34:36,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:34:36,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:34:36,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:34:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:34:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:34:36,428 INFO L87 Difference]: Start difference. First operand 58368 states and 80858 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:35:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:35:12,871 INFO L93 Difference]: Finished difference Result 116853 states and 161905 transitions. [2021-11-22 14:35:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:35:12,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-11-22 14:35:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:35:12,982 INFO L225 Difference]: With dead ends: 116853 [2021-11-22 14:35:12,982 INFO L226 Difference]: Without dead ends: 58565 [2021-11-22 14:35:13,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:35:13,093 INFO L933 BasicCegarLoop]: 39575 mSDtfsCounter, 208 mSDsluCounter, 101641 mSDsCounter, 0 mSdLazyCounter, 17217 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 141216 SdHoareTripleChecker+Invalid, 17237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 17217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:35:13,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 141216 Invalid, 17237 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [20 Valid, 17217 Invalid, 0 Unknown, 0 Unchecked, 34.3s Time] [2021-11-22 14:35:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58565 states. [2021-11-22 14:35:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58565 to 58372. [2021-11-22 14:35:14,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58372 states, 58321 states have (on average 1.3853500454381784) internal successors, (80795), 58327 states have internal predecessors, (80795), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-22 14:35:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58372 states to 58372 states and 80862 transitions. [2021-11-22 14:35:14,655 INFO L78 Accepts]: Start accepts. Automaton has 58372 states and 80862 transitions. Word has length 165 [2021-11-22 14:35:14,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:35:14,655 INFO L470 AbstractCegarLoop]: Abstraction has 58372 states and 80862 transitions. [2021-11-22 14:35:14,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:35:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 58372 states and 80862 transitions. [2021-11-22 14:35:14,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-22 14:35:14,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:35:14,692 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] [2021-11-22 14:35:14,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 14:35:14,692 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:35:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:35:14,693 INFO L85 PathProgramCache]: Analyzing trace with hash -27615615, now seen corresponding path program 1 times [2021-11-22 14:35:14,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:35:14,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559169807] [2021-11-22 14:35:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:14,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:35:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-22 14:35:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 14:35:15,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:35:15,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559169807] [2021-11-22 14:35:15,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559169807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:35:15,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:35:15,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:35:15,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232254653] [2021-11-22 14:35:15,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:35:15,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:35:15,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:35:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:35:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:35:15,124 INFO L87 Difference]: Start difference. First operand 58372 states and 80862 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:35:28,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:35:48,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:35:48,006 INFO L93 Difference]: Finished difference Result 116830 states and 161844 transitions. [2021-11-22 14:35:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:35:48,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-11-22 14:35:48,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:35:48,125 INFO L225 Difference]: With dead ends: 116830 [2021-11-22 14:35:48,125 INFO L226 Difference]: Without dead ends: 58510 [2021-11-22 14:35:48,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:35:48,214 INFO L933 BasicCegarLoop]: 39556 mSDtfsCounter, 134 mSDsluCounter, 62010 mSDsCounter, 0 mSdLazyCounter, 17194 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 101566 SdHoareTripleChecker+Invalid, 17223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 17194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2021-11-22 14:35:48,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 101566 Invalid, 17223 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [29 Valid, 17194 Invalid, 0 Unknown, 0 Unchecked, 30.9s Time] [2021-11-22 14:35:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58510 states. [2021-11-22 14:35:49,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58510 to 58379. [2021-11-22 14:35:49,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58379 states, 58328 states have (on average 1.3853037992044988) internal successors, (80802), 58334 states have internal predecessors, (80802), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-22 14:35:49,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58379 states to 58379 states and 80869 transitions. [2021-11-22 14:35:49,829 INFO L78 Accepts]: Start accepts. Automaton has 58379 states and 80869 transitions. Word has length 167 [2021-11-22 14:35:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:35:49,830 INFO L470 AbstractCegarLoop]: Abstraction has 58379 states and 80869 transitions. [2021-11-22 14:35:49,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:35:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 58379 states and 80869 transitions. [2021-11-22 14:35:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-22 14:35:49,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:35:49,859 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] [2021-11-22 14:35:49,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 14:35:49,859 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:35:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:35:49,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1551341722, now seen corresponding path program 1 times [2021-11-22 14:35:49,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:35:49,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085239231] [2021-11-22 14:35:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:49,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:35:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:50,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-22 14:35:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 14:35:50,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:35:50,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085239231] [2021-11-22 14:35:50,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085239231] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:35:50,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577323977] [2021-11-22 14:35:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:50,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:35:50,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:35:50,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:35:50,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:35:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:54,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 14:35:54,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:35:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 14:35:54,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:35:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 14:35:55,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577323977] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:35:55,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:35:55,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-22 14:35:55,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007673613] [2021-11-22 14:35:55,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:35:55,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 14:35:55,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:35:55,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 14:35:55,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:35:55,173 INFO L87 Difference]: Start difference. First operand 58379 states and 80869 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-22 14:36:29,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:36:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:36:38,041 INFO L93 Difference]: Finished difference Result 116901 states and 161973 transitions. [2021-11-22 14:36:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 14:36:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2021-11-22 14:36:38,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:36:38,164 INFO L225 Difference]: With dead ends: 116901 [2021-11-22 14:36:38,164 INFO L226 Difference]: Without dead ends: 58575 [2021-11-22 14:36:38,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:36:38,242 INFO L933 BasicCegarLoop]: 39544 mSDtfsCounter, 24167 mSDsluCounter, 77473 mSDsCounter, 0 mSdLazyCounter, 17366 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24172 SdHoareTripleChecker+Valid, 117017 SdHoareTripleChecker+Invalid, 17532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 17366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:36:38,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24172 Valid, 117017 Invalid, 17532 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [166 Valid, 17366 Invalid, 0 Unknown, 0 Unchecked, 39.8s Time] [2021-11-22 14:36:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58575 states. [2021-11-22 14:36:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58575 to 58444. [2021-11-22 14:36:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58444 states, 58393 states have (on average 1.3848748993886253) internal successors, (80867), 58399 states have internal predecessors, (80867), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-22 14:36:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58444 states to 58444 states and 80934 transitions. [2021-11-22 14:36:40,254 INFO L78 Accepts]: Start accepts. Automaton has 58444 states and 80934 transitions. Word has length 174 [2021-11-22 14:36:40,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:36:40,255 INFO L470 AbstractCegarLoop]: Abstraction has 58444 states and 80934 transitions. [2021-11-22 14:36:40,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-22 14:36:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 58444 states and 80934 transitions. [2021-11-22 14:36:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-22 14:36:40,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:36:40,283 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:36:40,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 14:36:40,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 14:36:40,487 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:36:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:36:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash -356450559, now seen corresponding path program 1 times [2021-11-22 14:36:40,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:36:40,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758868102] [2021-11-22 14:36:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:36:40,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:36:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:36:41,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-22 14:36:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:36:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-22 14:36:41,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:36:41,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758868102] [2021-11-22 14:36:41,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758868102] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:36:41,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789618868] [2021-11-22 14:36:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:36:41,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:36:41,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:36:41,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:36:41,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:36:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:36:45,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 3154 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-22 14:36:45,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:36:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-22 14:36:46,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:36:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-22 14:36:46,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789618868] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:36:46,567 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:36:46,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 13 [2021-11-22 14:36:46,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549513596] [2021-11-22 14:36:46,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:36:46,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 14:36:46,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:36:46,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 14:36:46,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-22 14:36:46,571 INFO L87 Difference]: Start difference. First operand 58444 states and 80934 transitions. Second operand has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 12 states have internal predecessors, (189), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-22 14:37:05,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:37:06,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:37:30,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:37:30,162 INFO L93 Difference]: Finished difference Result 116986 states and 162020 transitions. [2021-11-22 14:37:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 14:37:30,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 12 states have internal predecessors, (189), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 199 [2021-11-22 14:37:30,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:37:30,284 INFO L225 Difference]: With dead ends: 116986 [2021-11-22 14:37:30,284 INFO L226 Difference]: Without dead ends: 58603 [2021-11-22 14:37:30,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-11-22 14:37:30,374 INFO L933 BasicCegarLoop]: 39544 mSDtfsCounter, 134 mSDsluCounter, 259540 mSDsCounter, 0 mSdLazyCounter, 17980 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 299084 SdHoareTripleChecker+Invalid, 18184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 17980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2021-11-22 14:37:30,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 299084 Invalid, 18184 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [204 Valid, 17980 Invalid, 0 Unknown, 0 Unchecked, 39.9s Time] [2021-11-22 14:37:30,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58603 states. [2021-11-22 14:37:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58603 to 58472. [2021-11-22 14:37:32,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58472 states, 58421 states have (on average 1.384690436658051) internal successors, (80895), 58427 states have internal predecessors, (80895), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-22 14:37:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58472 states to 58472 states and 80962 transitions. [2021-11-22 14:37:32,359 INFO L78 Accepts]: Start accepts. Automaton has 58472 states and 80962 transitions. Word has length 199 [2021-11-22 14:37:32,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:37:32,359 INFO L470 AbstractCegarLoop]: Abstraction has 58472 states and 80962 transitions. [2021-11-22 14:37:32,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 12 states have internal predecessors, (189), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-22 14:37:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 58472 states and 80962 transitions. [2021-11-22 14:37:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-22 14:37:32,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:37:32,388 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-22 14:37:32,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:37:32,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-22 14:37:32,592 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:37:32,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:37:32,592 INFO L85 PathProgramCache]: Analyzing trace with hash -690824063, now seen corresponding path program 2 times [2021-11-22 14:37:32,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:37:32,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689359603] [2021-11-22 14:37:32,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:37:32,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:37:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:37:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-22 14:37:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:37:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-22 14:37:33,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:37:33,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689359603] [2021-11-22 14:37:33,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689359603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:37:33,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521559659] [2021-11-22 14:37:33,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:37:33,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:37:33,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:37:33,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:37:33,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 14:37:36,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-22 14:37:36,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:37:36,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-22 14:37:36,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:37:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-22 14:37:37,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:37:37,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521559659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:37:37,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 14:37:37,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2021-11-22 14:37:37,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061888588] [2021-11-22 14:37:37,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:37:37,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 14:37:37,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:37:37,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 14:37:37,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-22 14:37:37,292 INFO L87 Difference]: Start difference. First operand 58472 states and 80962 transitions. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:37:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:37:41,302 INFO L93 Difference]: Finished difference Result 117098 states and 162199 transitions. [2021-11-22 14:37:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 14:37:41,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207 [2021-11-22 14:37:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:37:41,423 INFO L225 Difference]: With dead ends: 117098 [2021-11-22 14:37:41,424 INFO L226 Difference]: Without dead ends: 58746 [2021-11-22 14:37:41,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2021-11-22 14:37:41,504 INFO L933 BasicCegarLoop]: 39702 mSDtfsCounter, 1032 mSDsluCounter, 276671 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 316373 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:37:41,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 316373 Invalid, 255 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [38 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 14:37:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58746 states. [2021-11-22 14:37:43,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58746 to 58472. [2021-11-22 14:37:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58472 states, 58421 states have (on average 1.3846562023929752) internal successors, (80893), 58427 states have internal predecessors, (80893), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-22 14:37:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58472 states to 58472 states and 80960 transitions. [2021-11-22 14:37:43,385 INFO L78 Accepts]: Start accepts. Automaton has 58472 states and 80960 transitions. Word has length 207 [2021-11-22 14:37:43,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:37:43,386 INFO L470 AbstractCegarLoop]: Abstraction has 58472 states and 80960 transitions. [2021-11-22 14:37:43,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:37:43,386 INFO L276 IsEmpty]: Start isEmpty. Operand 58472 states and 80960 transitions. [2021-11-22 14:37:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-22 14:37:43,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:37:43,414 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:37:43,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:37:43,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-22 14:37:43,615 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:37:43,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:37:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1861918605, now seen corresponding path program 1 times [2021-11-22 14:37:43,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:37:43,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820029288] [2021-11-22 14:37:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:37:43,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:37:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:37:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-22 14:37:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:37:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-22 14:37:44,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:37:44,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820029288] [2021-11-22 14:37:44,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820029288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:37:44,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:37:44,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:37:44,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775265497] [2021-11-22 14:37:44,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:37:44,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:37:44,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:37:44,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:37:44,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:37:44,083 INFO L87 Difference]: Start difference. First operand 58472 states and 80960 transitions. Second operand has 7 states, 7 states have (on average 26.0) internal successors, (182), 6 states have internal predecessors, (182), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:38:00,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:38:02,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:38:04,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 14:38:27,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:38:27,338 INFO L93 Difference]: Finished difference Result 117151 states and 162236 transitions. [2021-11-22 14:38:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:38:27,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.0) internal successors, (182), 6 states have internal predecessors, (182), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 220 [2021-11-22 14:38:27,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:38:27,468 INFO L225 Difference]: With dead ends: 117151 [2021-11-22 14:38:27,468 INFO L226 Difference]: Without dead ends: 58799 [2021-11-22 14:38:27,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:38:27,559 INFO L933 BasicCegarLoop]: 39608 mSDtfsCounter, 265 mSDsluCounter, 180890 mSDsCounter, 0 mSdLazyCounter, 17393 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 220498 SdHoareTripleChecker+Invalid, 17418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 17393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:38:27,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 220498 Invalid, 17418 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [25 Valid, 17393 Invalid, 0 Unknown, 0 Unchecked, 40.1s Time] [2021-11-22 14:38:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58799 states. [2021-11-22 14:38:29,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58799 to 58480. [2021-11-22 14:38:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58480 states, 58429 states have (on average 1.3846035359153845) internal successors, (80901), 58435 states have internal predecessors, (80901), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-22 14:38:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58480 states to 58480 states and 80968 transitions. [2021-11-22 14:38:29,552 INFO L78 Accepts]: Start accepts. Automaton has 58480 states and 80968 transitions. Word has length 220 [2021-11-22 14:38:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:38:29,553 INFO L470 AbstractCegarLoop]: Abstraction has 58480 states and 80968 transitions. [2021-11-22 14:38:29,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.0) internal successors, (182), 6 states have internal predecessors, (182), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 14:38:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand 58480 states and 80968 transitions. [2021-11-22 14:38:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-22 14:38:29,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:38:29,589 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:38:29,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 14:38:29,589 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:38:29,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:38:29,589 INFO L85 PathProgramCache]: Analyzing trace with hash -826499749, now seen corresponding path program 1 times [2021-11-22 14:38:29,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:38:29,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836208364] [2021-11-22 14:38:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:38:29,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:38:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:38:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-11-22 14:38:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:38:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-22 14:38:30,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:38:30,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836208364] [2021-11-22 14:38:30,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836208364] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:38:30,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005444678] [2021-11-22 14:38:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:38:30,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:38:30,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:38:30,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:38:30,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b85a5b-27df-4745-a92a-9218e30926ad/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 14:38:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:38:32,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 151 conjunts are in the unsatisfiable core [2021-11-22 14:38:32,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:38:32,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 14:38:33,398 INFO L354 Elim1Store]: treesize reduction 728, result has 5.3 percent of original size [2021-11-22 14:38:33,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 54 treesize of output 70 [2021-11-22 14:38:33,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:33,601 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-22 14:38:33,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 14 [2021-11-22 14:38:34,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2021-11-22 14:38:34,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-22 14:38:34,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2021-11-22 14:38:34,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 38 [2021-11-22 14:38:34,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,407 INFO L354 Elim1Store]: treesize reduction 94, result has 21.7 percent of original size [2021-11-22 14:38:34,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 91 [2021-11-22 14:38:34,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,467 INFO L354 Elim1Store]: treesize reduction 94, result has 21.7 percent of original size [2021-11-22 14:38:34,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 57 [2021-11-22 14:38:34,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,636 INFO L354 Elim1Store]: treesize reduction 128, result has 16.9 percent of original size [2021-11-22 14:38:34,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 84 [2021-11-22 14:38:34,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,685 INFO L354 Elim1Store]: treesize reduction 128, result has 16.9 percent of original size [2021-11-22 14:38:34,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 84 [2021-11-22 14:38:34,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,960 INFO L354 Elim1Store]: treesize reduction 88, result has 24.8 percent of original size [2021-11-22 14:38:34,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 104 treesize of output 124 [2021-11-22 14:38:34,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:34,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:35,025 INFO L354 Elim1Store]: treesize reduction 88, result has 24.8 percent of original size [2021-11-22 14:38:35,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 132 [2021-11-22 14:38:38,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,778 INFO L354 Elim1Store]: treesize reduction 110, result has 20.9 percent of original size [2021-11-22 14:38:38,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 146 treesize of output 169 [2021-11-22 14:38:38,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:38,851 INFO L354 Elim1Store]: treesize reduction 110, result has 20.9 percent of original size [2021-11-22 14:38:38,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 151 treesize of output 174 [2021-11-22 14:38:39,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,653 INFO L354 Elim1Store]: treesize reduction 338, result has 13.6 percent of original size [2021-11-22 14:38:39,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 210 treesize of output 210 [2021-11-22 14:38:39,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:38:39,777 INFO L354 Elim1Store]: treesize reduction 422, result has 11.2 percent of original size [2021-11-22 14:38:39,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 210 treesize of output 204 [2021-11-22 14:39:03,586 WARN L227 SmtUtils]: Spent 21.91s on a formula simplification. DAG size of input: 294 DAG size of output: 61 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 14:39:03,587 INFO L354 Elim1Store]: treesize reduction 1580, result has 7.0 percent of original size [2021-11-22 14:39:03,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 31 case distinctions, treesize of input 393 treesize of output 444 [2021-11-22 14:39:10,494 WARN L227 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 188 DAG size of output: 50 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 14:39:10,494 INFO L354 Elim1Store]: treesize reduction 558, result has 12.4 percent of original size [2021-11-22 14:39:10,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 426 treesize of output 432 [2021-11-22 14:39:15,216 INFO L354 Elim1Store]: treesize reduction 398, result has 15.3 percent of original size [2021-11-22 14:39:15,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 430 treesize of output 429 [2021-11-22 14:39:18,373 INFO L354 Elim1Store]: treesize reduction 440, result has 14.1 percent of original size [2021-11-22 14:39:18,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 433 treesize of output 424 [2021-11-22 14:39:21,091 INFO L354 Elim1Store]: treesize reduction 743, result has 11.2 percent of original size [2021-11-22 14:39:21,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 435 treesize of output 439 [2021-11-22 14:39:23,571 INFO L354 Elim1Store]: treesize reduction 898, result has 8.9 percent of original size [2021-11-22 14:39:23,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 37 case distinctions, treesize of input 458 treesize of output 448 [2021-11-22 14:39:25,498 INFO L354 Elim1Store]: treesize reduction 706, result has 11.1 percent of original size [2021-11-22 14:39:25,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 466 treesize of output 451 [2021-11-22 14:39:26,306 INFO L354 Elim1Store]: treesize reduction 578, result has 12.3 percent of original size [2021-11-22 14:39:26,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 470 treesize of output 444 [2021-11-22 14:39:27,015 INFO L354 Elim1Store]: treesize reduction 666, result has 10.0 percent of original size [2021-11-22 14:39:27,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 472 treesize of output 450 [2021-11-22 14:39:27,755 INFO L354 Elim1Store]: treesize reduction 913, result has 10.1 percent of original size [2021-11-22 14:39:27,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 37 case distinctions, treesize of input 468 treesize of output 455 [2021-11-22 14:39:28,082 INFO L354 Elim1Store]: treesize reduction 728, result has 11.0 percent of original size [2021-11-22 14:39:28,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 491 treesize of output 456 [2021-11-22 14:39:28,428 INFO L354 Elim1Store]: treesize reduction 674, result has 11.8 percent of original size [2021-11-22 14:39:28,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 493 treesize of output 469 [2021-11-22 14:39:48,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:39:48,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:39:48,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:39:48,506 INFO L354 Elim1Store]: treesize reduction 566, result has 11.6 percent of original size [2021-11-22 14:39:48,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 482 treesize of output 430 [2021-11-22 14:39:48,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:39:48,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:39:48,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:39:48,703 INFO L354 Elim1Store]: treesize reduction 560, result has 3.4 percent of original size [2021-11-22 14:39:48,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 406 treesize of output 302 [2021-11-22 14:39:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-22 14:39:49,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:39:49,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005444678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:49,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 14:39:49,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [10] total 33 [2021-11-22 14:39:49,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337430710] [2021-11-22 14:39:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:49,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-22 14:39:49,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-22 14:39:49,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2021-11-22 14:39:49,318 INFO L87 Difference]: Start difference. First operand 58480 states and 80968 transitions. Second operand has 25 states, 25 states have (on average 7.6) internal successors, (190), 23 states have internal predecessors, (190), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)