./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-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:00:41,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:00:41,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:00:41,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:00:41,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:00:41,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:00:41,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:00:41,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:00:41,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:00:41,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:00:41,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:00:41,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:00:41,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:00:41,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:00:41,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:00:41,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:00:41,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:00:41,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:00:41,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:00:41,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:00:41,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:00:41,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:00:41,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:00:41,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:00:41,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:00:41,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:00:41,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:00:41,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:00:41,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:00:41,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:00:41,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:00:41,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:00:41,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:00:41,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:00:41,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:00:41,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:00:41,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:00:41,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:00:41,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:00:41,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:00:41,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:00:41,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:00:41,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:00:41,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:00:41,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:00:41,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:00:41,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:00:41,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:00:41,844 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:00:41,844 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:00:41,844 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:00:41,845 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:00:41,846 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:00:41,846 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:00:41,846 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:00:41,847 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:00:41,847 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:00:41,847 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:00:41,847 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:00:41,848 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:00:41,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:00:41,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:00:41,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:00:41,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:00:41,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:00:41,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:00:41,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:00:41,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:00:41,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:00:41,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:00:41,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:00:41,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:00:41,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:00:41,852 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:00:41,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:00:41,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:00:41,852 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:00:41,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:00:41,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:00:41,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:00:41,853 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_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2022-11-03 02:00:42,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:00:42,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:00:42,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:00:42,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:00:42,246 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:00:42,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-03 02:00:42,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/data/7efaf6d7f/cee1063aef8949af939dd353084ad354/FLAGfa882ef98 [2022-11-03 02:00:43,357 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:00:43,358 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-03 02:00:43,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/data/7efaf6d7f/cee1063aef8949af939dd353084ad354/FLAGfa882ef98 [2022-11-03 02:00:43,725 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/data/7efaf6d7f/cee1063aef8949af939dd353084ad354 [2022-11-03 02:00:43,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:00:43,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:00:43,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:00:43,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:00:43,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:00:43,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:00:43" (1/1) ... [2022-11-03 02:00:43,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@385b2c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:43, skipping insertion in model container [2022-11-03 02:00:43,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:00:43" (1/1) ... [2022-11-03 02:00:43,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:00:43,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:00:45,994 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_50c1fed0-4a71-4f22-8d92-5372a8c54728/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2022-11-03 02:00:46,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:00:46,143 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:00:46,566 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_50c1fed0-4a71-4f22-8d92-5372a8c54728/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2022-11-03 02:00:46,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:00:46,780 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:00:46,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46 WrapperNode [2022-11-03 02:00:46,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:00:46,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:00:46,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:00:46,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:00:46,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:46,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:47,150 INFO L138 Inliner]: procedures = 286, calls = 3678, calls flagged for inlining = 140, calls inlined = 119, statements flattened = 7836 [2022-11-03 02:00:47,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:00:47,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:00:47,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:00:47,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:00:47,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:47,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:47,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:47,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:47,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:47,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:47,523 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:47,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:47,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:00:47,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:00:47,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:00:47,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:00:47,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (1/1) ... [2022-11-03 02:00:47,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:00:47,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:47,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:00:47,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:00:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2022-11-03 02:00:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2022-11-03 02:00:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2022-11-03 02:00:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2022-11-03 02:00:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-11-03 02:00:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 02:00:47,679 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 02:00:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 02:00:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:00:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:00:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:00:47,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:00:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:00:47,680 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:00:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-03 02:00:47,680 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-03 02:00:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2022-11-03 02:00:47,680 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2022-11-03 02:00:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 02:00:47,681 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 02:00:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 02:00:47,681 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 02:00:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:00:47,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:00:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:00:47,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:00:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-03 02:00:47,682 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-03 02:00:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-03 02:00:47,682 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-03 02:00:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2022-11-03 02:00:47,683 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2022-11-03 02:00:47,683 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:00:47,683 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:00:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-03 02:00:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-03 02:00:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:00:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:00:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-03 02:00:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-03 02:00:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-03 02:00:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-03 02:00:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:00:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:00:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:00:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:00:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:00:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:00:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2022-11-03 02:00:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2022-11-03 02:00:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2022-11-03 02:00:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2022-11-03 02:00:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2022-11-03 02:00:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2022-11-03 02:00:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:00:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:00:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:00:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:00:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2022-11-03 02:00:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2022-11-03 02:00:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-03 02:00:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-03 02:00:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:00:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2022-11-03 02:00:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2022-11-03 02:00:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-11-03 02:00:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-11-03 02:00:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 02:00:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 02:00:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:00:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:00:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:00:47,693 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:00:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure acm_softint [2022-11-03 02:00:47,694 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_softint [2022-11-03 02:00:47,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:00:47,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:00:47,694 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:00:47,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:00:47,694 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-03 02:00:47,694 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-03 02:00:47,695 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:00:47,695 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:00:47,696 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:00:47,696 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:00:47,696 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2022-11-03 02:00:47,696 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2022-11-03 02:00:47,696 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 02:00:47,697 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 02:00:47,697 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2022-11-03 02:00:47,697 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2022-11-03 02:00:47,698 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-03 02:00:47,698 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-03 02:00:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_from_anchor [2022-11-03 02:00:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_from_anchor [2022-11-03 02:00:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:00:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2022-11-03 02:00:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2022-11-03 02:00:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:00:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:00:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:00:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-03 02:00:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-03 02:00:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:00:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2022-11-03 02:00:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2022-11-03 02:00:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-03 02:00:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-03 02:00:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:00:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:00:47,703 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:00:47,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:00:47,706 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2022-11-03 02:00:47,706 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2022-11-03 02:00:47,706 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2022-11-03 02:00:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2022-11-03 02:00:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:00:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:00:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 02:00:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 02:00:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:00:47,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:00:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2022-11-03 02:00:47,716 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2022-11-03 02:00:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2022-11-03 02:00:47,716 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2022-11-03 02:00:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-03 02:00:47,716 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-03 02:00:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:00:47,717 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:00:47,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:00:47,717 INFO L130 BoogieDeclarations]: Found specification of procedure acm_set_control [2022-11-03 02:00:47,717 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_set_control [2022-11-03 02:00:47,717 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:00:47,717 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:00:47,717 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2022-11-03 02:00:47,718 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2022-11-03 02:00:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2022-11-03 02:00:47,718 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2022-11-03 02:00:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2022-11-03 02:00:47,718 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2022-11-03 02:00:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 02:00:47,718 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 02:00:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:00:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:00:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 02:00:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 02:00:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-11-03 02:00:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-11-03 02:00:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2022-11-03 02:00:47,720 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2022-11-03 02:00:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:00:47,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:00:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:00:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:00:47,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:00:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:00:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:00:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:00:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 02:00:47,721 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 02:00:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_dtr_rts [2022-11-03 02:00:47,721 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_dtr_rts [2022-11-03 02:00:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:00:47,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:00:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 02:00:47,722 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 02:00:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2022-11-03 02:00:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2022-11-03 02:00:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2022-11-03 02:00:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2022-11-03 02:00:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2022-11-03 02:00:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2022-11-03 02:00:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2022-11-03 02:00:47,724 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2022-11-03 02:00:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 02:00:47,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 02:00:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:00:47,724 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:00:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:00:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 02:00:47,725 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 02:00:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-03 02:00:47,725 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-03 02:00:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2022-11-03 02:00:47,727 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2022-11-03 02:00:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:00:47,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:00:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-03 02:00:47,727 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-03 02:00:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:00:47,728 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:00:48,663 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:00:48,667 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:00:49,027 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:01:05,104 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:01:06,508 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:01:06,508 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:01:06,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:06 BoogieIcfgContainer [2022-11-03 02:01:06,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:01:06,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:01:06,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:01:06,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:01:06,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:00:43" (1/3) ... [2022-11-03 02:01:06,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690dd253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:06, skipping insertion in model container [2022-11-03 02:01:06,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:46" (2/3) ... [2022-11-03 02:01:06,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690dd253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:06, skipping insertion in model container [2022-11-03 02:01:06,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:06" (3/3) ... [2022-11-03 02:01:06,521 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-03 02:01:06,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:01:06,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:01:06,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:01:06,657 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d73c998, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:01:06,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:01:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 1151 states, 721 states have (on average 1.3564493758668517) internal successors, (978), 737 states have internal predecessors, (978), 343 states have call successors, (343), 86 states have call predecessors, (343), 85 states have return successors, (334), 334 states have call predecessors, (334), 334 states have call successors, (334) [2022-11-03 02:01:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-03 02:01:06,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:06,702 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:06,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:06,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:06,708 INFO L85 PathProgramCache]: Analyzing trace with hash -243983167, now seen corresponding path program 1 times [2022-11-03 02:01:06,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:06,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488335344] [2022-11-03 02:01:06,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:06,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2022-11-03 02:01:08,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:08,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488335344] [2022-11-03 02:01:08,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488335344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:08,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:08,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:08,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635498215] [2022-11-03 02:01:08,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:09,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:09,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:09,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:09,053 INFO L87 Difference]: Start difference. First operand has 1151 states, 721 states have (on average 1.3564493758668517) internal successors, (978), 737 states have internal predecessors, (978), 343 states have call successors, (343), 86 states have call predecessors, (343), 85 states have return successors, (334), 334 states have call predecessors, (334), 334 states have call successors, (334) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:01:11,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:13,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:16,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:19,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:20,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:20,139 INFO L93 Difference]: Finished difference Result 2892 states and 4177 transitions. [2022-11-03 02:01:20,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:20,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 276 [2022-11-03 02:01:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:20,171 INFO L225 Difference]: With dead ends: 2892 [2022-11-03 02:01:20,171 INFO L226 Difference]: Without dead ends: 1759 [2022-11-03 02:01:20,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:20,188 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 904 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:20,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 3026 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 439 Invalid, 4 Unknown, 0 Unchecked, 10.8s Time] [2022-11-03 02:01:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2022-11-03 02:01:20,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1756. [2022-11-03 02:01:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1128 states have (on average 1.3537234042553192) internal successors, (1527), 1135 states have internal predecessors, (1527), 489 states have call successors, (489), 139 states have call predecessors, (489), 138 states have return successors, (488), 488 states have call predecessors, (488), 488 states have call successors, (488) [2022-11-03 02:01:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2504 transitions. [2022-11-03 02:01:20,369 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2504 transitions. Word has length 276 [2022-11-03 02:01:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:20,371 INFO L495 AbstractCegarLoop]: Abstraction has 1756 states and 2504 transitions. [2022-11-03 02:01:20,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:01:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2504 transitions. [2022-11-03 02:01:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-03 02:01:20,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:20,380 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:20,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:01:20,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:20,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:20,381 INFO L85 PathProgramCache]: Analyzing trace with hash 926679960, now seen corresponding path program 1 times [2022-11-03 02:01:20,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:20,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792093086] [2022-11-03 02:01:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:20,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2022-11-03 02:01:22,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:22,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792093086] [2022-11-03 02:01:22,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792093086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:22,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:22,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:22,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421062172] [2022-11-03 02:01:22,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:22,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:22,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:22,035 INFO L87 Difference]: Start difference. First operand 1756 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:01:24,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:26,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:29,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:31,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:33,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:34,846 INFO L93 Difference]: Finished difference Result 4793 states and 6808 transitions. [2022-11-03 02:01:34,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:34,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 274 [2022-11-03 02:01:34,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:34,867 INFO L225 Difference]: With dead ends: 4793 [2022-11-03 02:01:34,867 INFO L226 Difference]: Without dead ends: 3086 [2022-11-03 02:01:34,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:34,876 INFO L413 NwaCegarLoop]: 1893 mSDtfsCounter, 1133 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:34,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 3292 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 504 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2022-11-03 02:01:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2022-11-03 02:01:35,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 3073. [2022-11-03 02:01:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3073 states, 2005 states have (on average 1.366583541147132) internal successors, (2740), 2019 states have internal predecessors, (2740), 810 states have call successors, (810), 258 states have call predecessors, (810), 257 states have return successors, (809), 807 states have call predecessors, (809), 809 states have call successors, (809) [2022-11-03 02:01:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 4359 transitions. [2022-11-03 02:01:35,132 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 4359 transitions. Word has length 274 [2022-11-03 02:01:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:35,137 INFO L495 AbstractCegarLoop]: Abstraction has 3073 states and 4359 transitions. [2022-11-03 02:01:35,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:01:35,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 4359 transitions. [2022-11-03 02:01:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-03 02:01:35,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:35,144 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:35,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:01:35,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:35,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash 535553693, now seen corresponding path program 1 times [2022-11-03 02:01:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:35,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664627964] [2022-11-03 02:01:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:35,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2022-11-03 02:01:36,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:36,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664627964] [2022-11-03 02:01:36,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664627964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:36,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:36,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:36,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50690669] [2022-11-03 02:01:36,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:36,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:36,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:36,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:36,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:36,477 INFO L87 Difference]: Start difference. First operand 3073 states and 4359 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 02:01:38,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:40,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:44,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:45,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:45,957 INFO L93 Difference]: Finished difference Result 7471 states and 10554 transitions. [2022-11-03 02:01:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:45,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 274 [2022-11-03 02:01:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:45,983 INFO L225 Difference]: With dead ends: 7471 [2022-11-03 02:01:45,983 INFO L226 Difference]: Without dead ends: 4447 [2022-11-03 02:01:45,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:45,995 INFO L413 NwaCegarLoop]: 1834 mSDtfsCounter, 792 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:45,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 3168 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 563 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 02:01:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-11-03 02:01:46,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 4436. [2022-11-03 02:01:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4436 states, 2921 states have (on average 1.3676823005819925) internal successors, (3995), 2939 states have internal predecessors, (3995), 1128 states have call successors, (1128), 387 states have call predecessors, (1128), 386 states have return successors, (1127), 1125 states have call predecessors, (1127), 1127 states have call successors, (1127) [2022-11-03 02:01:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4436 states to 4436 states and 6250 transitions. [2022-11-03 02:01:46,187 INFO L78 Accepts]: Start accepts. Automaton has 4436 states and 6250 transitions. Word has length 274 [2022-11-03 02:01:46,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:46,188 INFO L495 AbstractCegarLoop]: Abstraction has 4436 states and 6250 transitions. [2022-11-03 02:01:46,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 02:01:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4436 states and 6250 transitions. [2022-11-03 02:01:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-03 02:01:46,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:46,201 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:46,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:01:46,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:46,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1680721713, now seen corresponding path program 1 times [2022-11-03 02:01:46,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:46,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200338649] [2022-11-03 02:01:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:46,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2022-11-03 02:01:47,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:47,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200338649] [2022-11-03 02:01:47,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200338649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:47,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:47,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:47,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136270733] [2022-11-03 02:01:47,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:47,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:47,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:47,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:47,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:47,411 INFO L87 Difference]: Start difference. First operand 4436 states and 6250 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:01:49,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:51,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:54,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:56,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:58,762 INFO L93 Difference]: Finished difference Result 12973 states and 18268 transitions. [2022-11-03 02:01:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 317 [2022-11-03 02:01:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:58,808 INFO L225 Difference]: With dead ends: 12973 [2022-11-03 02:01:58,808 INFO L226 Difference]: Without dead ends: 8586 [2022-11-03 02:01:58,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:58,826 INFO L413 NwaCegarLoop]: 1762 mSDtfsCounter, 1285 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:58,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 3167 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 425 Invalid, 4 Unknown, 0 Unchecked, 11.1s Time] [2022-11-03 02:01:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8586 states. [2022-11-03 02:01:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8586 to 7188. [2022-11-03 02:01:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 4737 states have (on average 1.3723875870804307) internal successors, (6501), 4773 states have internal predecessors, (6501), 1825 states have call successors, (1825), 626 states have call predecessors, (1825), 625 states have return successors, (1824), 1814 states have call predecessors, (1824), 1824 states have call successors, (1824) [2022-11-03 02:01:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 10150 transitions. [2022-11-03 02:01:59,205 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 10150 transitions. Word has length 317 [2022-11-03 02:01:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:59,205 INFO L495 AbstractCegarLoop]: Abstraction has 7188 states and 10150 transitions. [2022-11-03 02:01:59,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:01:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 10150 transitions. [2022-11-03 02:01:59,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-03 02:01:59,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:59,220 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:59,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:01:59,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:59,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:59,221 INFO L85 PathProgramCache]: Analyzing trace with hash 206056687, now seen corresponding path program 1 times [2022-11-03 02:01:59,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:59,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378336636] [2022-11-03 02:01:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:59,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2022-11-03 02:02:00,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:00,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378336636] [2022-11-03 02:02:00,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378336636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:00,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:00,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:02:00,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728604520] [2022-11-03 02:02:00,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:00,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:02:00,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:00,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:02:00,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:02:00,814 INFO L87 Difference]: Start difference. First operand 7188 states and 10150 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:02:02,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:05,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:08,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:10,340 INFO L93 Difference]: Finished difference Result 14290 states and 20185 transitions. [2022-11-03 02:02:10,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:02:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 334 [2022-11-03 02:02:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:10,378 INFO L225 Difference]: With dead ends: 14290 [2022-11-03 02:02:10,379 INFO L226 Difference]: Without dead ends: 7143 [2022-11-03 02:02:10,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:10,403 INFO L413 NwaCegarLoop]: 1414 mSDtfsCounter, 1 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4235 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:10,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4235 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 627 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 02:02:10,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7143 states. [2022-11-03 02:02:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7143 to 5249. [2022-11-03 02:02:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 3449 states have (on average 1.3699623079153378) internal successors, (4725), 3476 states have internal predecessors, (4725), 1347 states have call successors, (1347), 453 states have call predecessors, (1347), 452 states have return successors, (1346), 1338 states have call predecessors, (1346), 1346 states have call successors, (1346) [2022-11-03 02:02:10,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 7418 transitions. [2022-11-03 02:02:10,667 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 7418 transitions. Word has length 334 [2022-11-03 02:02:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:10,668 INFO L495 AbstractCegarLoop]: Abstraction has 5249 states and 7418 transitions. [2022-11-03 02:02:10,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:02:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 7418 transitions. [2022-11-03 02:02:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-03 02:02:10,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:10,681 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:10,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:02:10,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash -746509651, now seen corresponding path program 1 times [2022-11-03 02:02:10,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:10,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536458259] [2022-11-03 02:02:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1403 trivial. 0 not checked. [2022-11-03 02:02:11,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:11,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536458259] [2022-11-03 02:02:11,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536458259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:11,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:11,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:11,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3816867] [2022-11-03 02:02:11,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:11,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:11,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:11,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:11,895 INFO L87 Difference]: Start difference. First operand 5249 states and 7418 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:02:14,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:16,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:19,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:20,797 INFO L93 Difference]: Finished difference Result 11941 states and 16854 transitions. [2022-11-03 02:02:20,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:20,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 341 [2022-11-03 02:02:20,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:20,828 INFO L225 Difference]: With dead ends: 11941 [2022-11-03 02:02:20,828 INFO L226 Difference]: Without dead ends: 6741 [2022-11-03 02:02:20,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:20,847 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 854 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:20,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 2974 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 432 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2022-11-03 02:02:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2022-11-03 02:02:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 5875. [2022-11-03 02:02:21,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5875 states, 3862 states have (on average 1.370015535991714) internal successors, (5291), 3891 states have internal predecessors, (5291), 1505 states have call successors, (1505), 508 states have call predecessors, (1505), 507 states have return successors, (1504), 1496 states have call predecessors, (1504), 1504 states have call successors, (1504) [2022-11-03 02:02:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5875 states to 5875 states and 8300 transitions. [2022-11-03 02:02:21,215 INFO L78 Accepts]: Start accepts. Automaton has 5875 states and 8300 transitions. Word has length 341 [2022-11-03 02:02:21,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:21,216 INFO L495 AbstractCegarLoop]: Abstraction has 5875 states and 8300 transitions. [2022-11-03 02:02:21,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:02:21,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5875 states and 8300 transitions. [2022-11-03 02:02:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-11-03 02:02:21,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:21,229 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:21,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:02:21,229 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:21,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1299538812, now seen corresponding path program 1 times [2022-11-03 02:02:21,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:21,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795576201] [2022-11-03 02:02:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2022-11-03 02:02:22,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:22,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795576201] [2022-11-03 02:02:22,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795576201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:22,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:22,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:22,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828789060] [2022-11-03 02:02:22,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:22,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:22,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:22,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:22,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:22,585 INFO L87 Difference]: Start difference. First operand 5875 states and 8300 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:02:24,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:26,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:29,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:32,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:32,067 INFO L93 Difference]: Finished difference Result 10405 states and 14790 transitions. [2022-11-03 02:02:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 339 [2022-11-03 02:02:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:32,118 INFO L225 Difference]: With dead ends: 10405 [2022-11-03 02:02:32,118 INFO L226 Difference]: Without dead ends: 10402 [2022-11-03 02:02:32,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:32,124 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 1195 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:32,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 2849 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-11-03 02:02:32,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10402 states. [2022-11-03 02:02:32,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10402 to 10208. [2022-11-03 02:02:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10208 states, 6812 states have (on average 1.3852025836758661) internal successors, (9436), 6886 states have internal predecessors, (9436), 2506 states have call successors, (2506), 895 states have call predecessors, (2506), 889 states have return successors, (2529), 2458 states have call predecessors, (2529), 2505 states have call successors, (2529) [2022-11-03 02:02:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10208 states to 10208 states and 14471 transitions. [2022-11-03 02:02:32,592 INFO L78 Accepts]: Start accepts. Automaton has 10208 states and 14471 transitions. Word has length 339 [2022-11-03 02:02:32,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:32,593 INFO L495 AbstractCegarLoop]: Abstraction has 10208 states and 14471 transitions. [2022-11-03 02:02:32,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:02:32,593 INFO L276 IsEmpty]: Start isEmpty. Operand 10208 states and 14471 transitions. [2022-11-03 02:02:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-11-03 02:02:32,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:32,607 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:32,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:02:32,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1690665079, now seen corresponding path program 1 times [2022-11-03 02:02:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:32,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019447611] [2022-11-03 02:02:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2022-11-03 02:02:34,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:34,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019447611] [2022-11-03 02:02:34,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019447611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:34,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:34,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:34,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864673382] [2022-11-03 02:02:34,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:34,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:34,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:34,044 INFO L87 Difference]: Start difference. First operand 10208 states and 14471 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 02:02:36,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:38,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:42,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:43,337 INFO L93 Difference]: Finished difference Result 27041 states and 38310 transitions. [2022-11-03 02:02:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:43,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 339 [2022-11-03 02:02:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:43,519 INFO L225 Difference]: With dead ends: 27041 [2022-11-03 02:02:43,519 INFO L226 Difference]: Without dead ends: 16882 [2022-11-03 02:02:43,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:43,548 INFO L413 NwaCegarLoop]: 1818 mSDtfsCounter, 1149 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 53 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:43,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 3117 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 531 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2022-11-03 02:02:43,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16882 states. [2022-11-03 02:02:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16882 to 16845. [2022-11-03 02:02:44,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16845 states, 11336 states have (on average 1.371118560338744) internal successors, (15543), 11460 states have internal predecessors, (15543), 3994 states have call successors, (3994), 1523 states have call predecessors, (3994), 1514 states have return successors, (4017), 3914 states have call predecessors, (4017), 3993 states have call successors, (4017) [2022-11-03 02:02:44,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16845 states to 16845 states and 23554 transitions. [2022-11-03 02:02:44,304 INFO L78 Accepts]: Start accepts. Automaton has 16845 states and 23554 transitions. Word has length 339 [2022-11-03 02:02:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:44,304 INFO L495 AbstractCegarLoop]: Abstraction has 16845 states and 23554 transitions. [2022-11-03 02:02:44,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 02:02:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 16845 states and 23554 transitions. [2022-11-03 02:02:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-11-03 02:02:44,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:44,315 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:44,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:02:44,315 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:44,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1739514091, now seen corresponding path program 1 times [2022-11-03 02:02:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:44,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645572960] [2022-11-03 02:02:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-03 02:02:45,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:45,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645572960] [2022-11-03 02:02:45,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645572960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:45,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:45,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:45,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325562538] [2022-11-03 02:02:45,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:45,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:45,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:45,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:45,639 INFO L87 Difference]: Start difference. First operand 16845 states and 23554 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:02:47,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:49,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:53,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:55,275 INFO L93 Difference]: Finished difference Result 40017 states and 55933 transitions. [2022-11-03 02:02:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:55,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 350 [2022-11-03 02:02:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:55,363 INFO L225 Difference]: With dead ends: 40017 [2022-11-03 02:02:55,363 INFO L226 Difference]: Without dead ends: 23221 [2022-11-03 02:02:55,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:55,404 INFO L413 NwaCegarLoop]: 2176 mSDtfsCounter, 1078 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 3415 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:55,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 3415 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 505 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2022-11-03 02:02:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23221 states. [2022-11-03 02:02:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23221 to 23212. [2022-11-03 02:02:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23212 states, 15756 states have (on average 1.3718583396801218) internal successors, (21615), 15921 states have internal predecessors, (21615), 5340 states have call successors, (5340), 2124 states have call predecessors, (5340), 2115 states have return successors, (5375), 5234 states have call predecessors, (5375), 5339 states have call successors, (5375) [2022-11-03 02:02:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23212 states to 23212 states and 32330 transitions. [2022-11-03 02:02:56,540 INFO L78 Accepts]: Start accepts. Automaton has 23212 states and 32330 transitions. Word has length 350 [2022-11-03 02:02:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:56,541 INFO L495 AbstractCegarLoop]: Abstraction has 23212 states and 32330 transitions. [2022-11-03 02:02:56,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:02:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 23212 states and 32330 transitions. [2022-11-03 02:02:56,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-03 02:02:56,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:56,561 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:56,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:02:56,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:56,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:56,562 INFO L85 PathProgramCache]: Analyzing trace with hash -446321812, now seen corresponding path program 1 times [2022-11-03 02:02:56,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:56,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883442655] [2022-11-03 02:02:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:56,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2022-11-03 02:03:03,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:03,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883442655] [2022-11-03 02:03:03,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883442655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:03,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304384747] [2022-11-03 02:03:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:03,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:03,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:03,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:03,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:03:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:06,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 10202 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:03:06,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2022-11-03 02:03:06,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:06,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304384747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:06,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:03:06,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-03 02:03:06,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168147571] [2022-11-03 02:03:06,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:06,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:06,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:03:06,880 INFO L87 Difference]: Start difference. First operand 23212 states and 32330 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 02:03:08,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:11,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:15,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:17,434 INFO L93 Difference]: Finished difference Result 44402 states and 61853 transitions. [2022-11-03 02:03:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:03:17,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 357 [2022-11-03 02:03:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:17,521 INFO L225 Difference]: With dead ends: 44402 [2022-11-03 02:03:17,521 INFO L226 Difference]: Without dead ends: 21203 [2022-11-03 02:03:17,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:03:17,576 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 5 mSDsluCounter, 4838 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:17,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5633 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 837 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 02:03:17,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21203 states. [2022-11-03 02:03:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21203 to 21197. [2022-11-03 02:03:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21197 states, 14397 states have (on average 1.3728554559977773) internal successors, (19765), 14551 states have internal predecessors, (19765), 4875 states have call successors, (4875), 1933 states have call predecessors, (4875), 1924 states have return successors, (4906), 4775 states have call predecessors, (4906), 4874 states have call successors, (4906) [2022-11-03 02:03:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21197 states to 21197 states and 29546 transitions. [2022-11-03 02:03:18,552 INFO L78 Accepts]: Start accepts. Automaton has 21197 states and 29546 transitions. Word has length 357 [2022-11-03 02:03:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:18,553 INFO L495 AbstractCegarLoop]: Abstraction has 21197 states and 29546 transitions. [2022-11-03 02:03:18,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 02:03:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 21197 states and 29546 transitions. [2022-11-03 02:03:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-03 02:03:18,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:18,565 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:18,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:18,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:03:18,776 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:18,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash 223940705, now seen corresponding path program 1 times [2022-11-03 02:03:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:18,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279963093] [2022-11-03 02:03:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:18,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2022-11-03 02:03:21,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:21,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279963093] [2022-11-03 02:03:21,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279963093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:21,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:21,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:03:21,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283413116] [2022-11-03 02:03:21,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:21,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:03:21,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:21,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:03:21,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:21,247 INFO L87 Difference]: Start difference. First operand 21197 states and 29546 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 02:03:23,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:25,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:30,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:32,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:32,342 INFO L93 Difference]: Finished difference Result 48628 states and 67842 transitions. [2022-11-03 02:03:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:03:32,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 368 [2022-11-03 02:03:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:32,458 INFO L225 Difference]: With dead ends: 48628 [2022-11-03 02:03:32,459 INFO L226 Difference]: Without dead ends: 27488 [2022-11-03 02:03:32,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:03:32,514 INFO L413 NwaCegarLoop]: 1999 mSDtfsCounter, 1475 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:32,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 3768 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1113 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 02:03:32,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27488 states. [2022-11-03 02:03:33,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27488 to 27402. [2022-11-03 02:03:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27402 states, 18733 states have (on average 1.3744728553888859) internal successors, (25748), 18925 states have internal predecessors, (25748), 6189 states have call successors, (6189), 2488 states have call predecessors, (6189), 2479 states have return successors, (6232), 6066 states have call predecessors, (6232), 6188 states have call successors, (6232) [2022-11-03 02:03:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27402 states to 27402 states and 38169 transitions. [2022-11-03 02:03:33,689 INFO L78 Accepts]: Start accepts. Automaton has 27402 states and 38169 transitions. Word has length 368 [2022-11-03 02:03:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:33,690 INFO L495 AbstractCegarLoop]: Abstraction has 27402 states and 38169 transitions. [2022-11-03 02:03:33,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 02:03:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 27402 states and 38169 transitions. [2022-11-03 02:03:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-03 02:03:33,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:33,703 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:33,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:03:33,703 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash -863296086, now seen corresponding path program 1 times [2022-11-03 02:03:33,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:33,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968074099] [2022-11-03 02:03:33,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:33,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2022-11-03 02:03:39,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:39,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968074099] [2022-11-03 02:03:39,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968074099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:39,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643071194] [2022-11-03 02:03:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:39,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:39,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:39,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:39,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:03:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:44,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 10327 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:03:44,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2022-11-03 02:03:44,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:44,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643071194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:44,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:03:44,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2022-11-03 02:03:44,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246216079] [2022-11-03 02:03:44,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:44,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:03:44,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:44,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:03:44,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:03:44,829 INFO L87 Difference]: Start difference. First operand 27402 states and 38169 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 02:03:47,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:49,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:53,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:56,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:56,945 INFO L93 Difference]: Finished difference Result 54975 states and 76672 transitions. [2022-11-03 02:03:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:03:56,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) Word has length 366 [2022-11-03 02:03:56,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:57,077 INFO L225 Difference]: With dead ends: 54975 [2022-11-03 02:03:57,077 INFO L226 Difference]: Without dead ends: 27510 [2022-11-03 02:03:57,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:03:57,159 INFO L413 NwaCegarLoop]: 1404 mSDtfsCounter, 1 mSDsluCounter, 6398 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6996 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:57,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6996 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1042 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2022-11-03 02:03:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27510 states. [2022-11-03 02:03:58,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27510 to 27510. [2022-11-03 02:03:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27510 states, 18787 states have (on average 1.373290040985788) internal successors, (25800), 19033 states have internal predecessors, (25800), 6189 states have call successors, (6189), 2488 states have call predecessors, (6189), 2533 states have return successors, (6361), 6066 states have call predecessors, (6361), 6188 states have call successors, (6361) [2022-11-03 02:03:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27510 states to 27510 states and 38350 transitions. [2022-11-03 02:03:58,483 INFO L78 Accepts]: Start accepts. Automaton has 27510 states and 38350 transitions. Word has length 366 [2022-11-03 02:03:58,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:58,483 INFO L495 AbstractCegarLoop]: Abstraction has 27510 states and 38350 transitions. [2022-11-03 02:03:58,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 02:03:58,484 INFO L276 IsEmpty]: Start isEmpty. Operand 27510 states and 38350 transitions. [2022-11-03 02:03:58,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-11-03 02:03:58,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:58,497 INFO L195 NwaCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:58,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:58,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:58,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:58,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:58,712 INFO L85 PathProgramCache]: Analyzing trace with hash 645719744, now seen corresponding path program 1 times [2022-11-03 02:03:58,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:58,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113512233] [2022-11-03 02:03:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:58,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2022-11-03 02:04:03,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:03,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113512233] [2022-11-03 02:04:03,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113512233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:03,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276674782] [2022-11-03 02:04:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:03,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:03,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:03,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:03,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:04:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:22,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 10390 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:04:22,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2022-11-03 02:04:22,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:04:22,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276674782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:22,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:04:22,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-11-03 02:04:22,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507517523] [2022-11-03 02:04:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:04:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:04:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:04:22,534 INFO L87 Difference]: Start difference. First operand 27510 states and 38350 transitions. Second operand has 6 states, 4 states have (on average 26.25) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-03 02:04:24,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:27,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:30,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:32,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:35,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:38,374 INFO L93 Difference]: Finished difference Result 55072 states and 76878 transitions. [2022-11-03 02:04:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:04:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 26.25) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 380 [2022-11-03 02:04:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:38,487 INFO L225 Difference]: With dead ends: 55072 [2022-11-03 02:04:38,487 INFO L226 Difference]: Without dead ends: 27554 [2022-11-03 02:04:38,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:04:38,546 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 3 mSDsluCounter, 6357 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6939 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:38,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6939 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1090 Invalid, 5 Unknown, 0 Unchecked, 14.9s Time] [2022-11-03 02:04:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27554 states. [2022-11-03 02:04:39,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27554 to 27554. [2022-11-03 02:04:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27554 states, 18831 states have (on average 1.372417821677022) internal successors, (25844), 19077 states have internal predecessors, (25844), 6189 states have call successors, (6189), 2488 states have call predecessors, (6189), 2533 states have return successors, (6361), 6066 states have call predecessors, (6361), 6188 states have call successors, (6361) [2022-11-03 02:04:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27554 states to 27554 states and 38394 transitions. [2022-11-03 02:04:39,625 INFO L78 Accepts]: Start accepts. Automaton has 27554 states and 38394 transitions. Word has length 380 [2022-11-03 02:04:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:39,625 INFO L495 AbstractCegarLoop]: Abstraction has 27554 states and 38394 transitions. [2022-11-03 02:04:39,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 26.25) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-03 02:04:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 27554 states and 38394 transitions. [2022-11-03 02:04:39,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-03 02:04:39,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:39,639 INFO L195 NwaCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:39,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:04:39,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:04:39,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:39,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash -699154352, now seen corresponding path program 1 times [2022-11-03 02:04:39,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:39,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354509142] [2022-11-03 02:04:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1688 trivial. 0 not checked. [2022-11-03 02:04:47,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:47,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354509142] [2022-11-03 02:04:47,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354509142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:47,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685891076] [2022-11-03 02:04:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:47,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:47,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:47,996 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:48,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c1fed0-4a71-4f22-8d92-5372a8c54728/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:04:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:52,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 10510 conjuncts, 251 conjunts are in the unsatisfiable core [2022-11-03 02:04:52,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:53,129 INFO L356 Elim1Store]: treesize reduction 530, result has 14.9 percent of original size [2022-11-03 02:04:53,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 14490 treesize of output 14424 [2022-11-03 02:04:56,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:56,267 INFO L390 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 [2022-11-03 02:04:56,331 INFO L390 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 [2022-11-03 02:04:56,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:56,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:04:56,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:56,658 INFO L390 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 [2022-11-03 02:04:56,694 INFO L390 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 [2022-11-03 02:04:56,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:56,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:04:56,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:56,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:04:57,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:04:57,088 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:04:57,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 02:04:57,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:57,300 INFO L390 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 [2022-11-03 02:04:57,413 INFO L390 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 [2022-11-03 02:04:57,506 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:04:57,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:04:57,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:57,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:04:57,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:04:57,875 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:04:57,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 02:04:57,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:58,015 INFO L390 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 [2022-11-03 02:04:58,093 INFO L390 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 [2022-11-03 02:04:58,251 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:04:58,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:04:58,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:58,398 INFO L390 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 [2022-11-03 02:04:58,472 INFO L390 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 [2022-11-03 02:04:58,565 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:04:58,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:04:58,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:58,749 INFO L390 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 [2022-11-03 02:04:58,812 INFO L390 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 [2022-11-03 02:04:58,916 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:04:58,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:04:59,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:59,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:04:59,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:04:59,245 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:04:59,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 02:04:59,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:59,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:04:59,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:04:59,612 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:04:59,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 02:04:59,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:04:59,767 INFO L390 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 [2022-11-03 02:04:59,845 INFO L390 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 [2022-11-03 02:04:59,947 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:04:59,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:05:00,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:05:00,137 INFO L390 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 [2022-11-03 02:05:00,211 INFO L390 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 [2022-11-03 02:05:00,373 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:05:00,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:05:00,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:05:00,623 INFO L390 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 [2022-11-03 02:05:00,659 INFO L390 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 [2022-11-03 02:05:00,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:00,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:05:00,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:05:00,999 INFO L390 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 [2022-11-03 02:05:01,039 INFO L390 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 [2022-11-03 02:05:01,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:01,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:05:02,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:05:03,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:05:03,516 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|) 1) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|))) (exists ((v_ArrVal_31932 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ldv_memset_#in~s.base| v_ArrVal_31932)))) is different from true [2022-11-03 02:05:03,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:05:03,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:05:04,004 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|) 1) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|))) (exists ((v_ArrVal_31933 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_31933) |c_#memory_int|))) is different from true [2022-11-03 02:05:04,040 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_31933 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ldv_memset_#in~s.base| v_ArrVal_31933))) (exists ((|v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|) 1) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|)))) is different from true [2022-11-03 02:05:04,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:05:04,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:05:04,473 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|) 1) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|))) (exists ((v_ArrVal_31934 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_31934) |c_#memory_int|))) is different from true [2022-11-03 02:05:04,507 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|) 1) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|))) (exists ((v_ArrVal_31934 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ldv_memset_#in~s.base| v_ArrVal_31934)))) is different from true [2022-11-03 02:05:04,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:05:04,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:05:04,960 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|) 1) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|))) (exists ((v_ArrVal_31935 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_31935) |c_#memory_int|))) is different from true [2022-11-03 02:05:05,001 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|) 1) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_main_~#ldvarg15~0#1.base_BEFORE_CALL_19|))) (exists ((v_ArrVal_31935 (Array Int Int))) (= (store |c_old(#memory_int)| |c_ldv_memset_#in~s.base| v_ArrVal_31935) |c_#memory_int|))) is different from true [2022-11-03 02:05:05,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:05:05,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:05:05,986 INFO L390 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 [2022-11-03 02:05:06,156 INFO L390 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 [2022-11-03 02:05:06,277 INFO L390 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 [2022-11-03 02:05:06,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:06,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:05:07,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:07,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:05:07,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:05:07,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:05:07,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:05:07,900 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_31941 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_31941) |c_#memory_int|))) is different from true [2022-11-03 02:05:08,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:05:08,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:05:08,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:08,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:05:08,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:08,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-03 02:05:08,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:05:08,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:05:08,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:05:08,880 INFO L390 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 [2022-11-03 02:05:08,895 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_31943 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_31943) |c_#memory_int|))) is different from true [2022-11-03 02:05:09,061 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|v_#Ultimate.meminit_#ptr.base_AFTER_CALL_66| Int) (v_ArrVal_31943 (Array Int Int))) (and (= |c_#memory_int| (store |c_old(#memory_int)| |v_#Ultimate.meminit_#ptr.base_AFTER_CALL_66| v_ArrVal_31943)) (<= |v_#Ultimate.meminit_#ptr.base_AFTER_CALL_66| c_ldv_init_zalloc_~p~2.base))) (exists ((v_ArrVal_31942 Int)) (= |c_#valid| (store |c_old(#valid)| c_ldv_init_zalloc_~p~2.base v_ArrVal_31942))) (< c_ldv_init_zalloc_~p~2.base |c_#StackHeapBarrier|)) is different from true [2022-11-03 02:05:09,071 INFO L390 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 [2022-11-03 02:05:09,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:05:09,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:09,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:05:09,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:09,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:05:09,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:05:09,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:05:09,940 INFO L390 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 [2022-11-03 02:05:10,046 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_31945 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_31945))) (< c_~acm_ops_group1~0.base |c_#StackHeapBarrier|)) is different from true [2022-11-03 02:05:10,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:05:10,279 INFO L390 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 [2022-11-03 02:05:10,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:10,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:05:10,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:10,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:05:11,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:11,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:05:11,033 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:05:11,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 02:05:11,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 02:05:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 415 proven. 645 refuted. 3 times theorem prover too weak. 501 trivial. 181 not checked. [2022-11-03 02:05:11,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:05:12,404 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.meminit_#ptr.base_9| Int) (v_ArrVal_31946 (Array Int Int)) (v_ArrVal_31959 Int) (|v_ldv_init_zalloc_#t~malloc32.base_9| Int) (v_ArrVal_31958 (Array Int Int)) (|v_ULTIMATE.start_acm_tty_open_~#descriptor~4#1.base_25| Int)) (or (not (= (select (store |c_#valid| |v_ldv_init_zalloc_#t~malloc32.base_9| v_ArrVal_31959) |v_ULTIMATE.start_acm_tty_open_~#descriptor~4#1.base_25|) 0)) (not (<= |v_#Ultimate.meminit_#ptr.base_9| |v_ldv_init_zalloc_#t~malloc32.base_9|)) (not (< |c_#StackHeapBarrier| |v_ULTIMATE.start_acm_tty_open_~#descriptor~4#1.base_25|)) (= (select (select (store (store |c_#memory_int| |v_#Ultimate.meminit_#ptr.base_9| v_ArrVal_31958) |v_ULTIMATE.start_acm_tty_open_~#descriptor~4#1.base_25| v_ArrVal_31946) |c_ULTIMATE.start_main_~#ldvarg15~0#1.base|) |c_ULTIMATE.start_main_~#ldvarg15~0#1.offset|) 0) (not (< |v_ldv_init_zalloc_#t~malloc32.base_9| |c_#StackHeapBarrier|)))) is different from false [2022-11-03 02:05:12,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685891076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:05:12,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [918684928] [2022-11-03 02:05:12,458 INFO L159 IcfgInterpreter]: Started Sifa with 146 locations of interest [2022-11-03 02:05:12,458 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:05:12,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:05:12,470 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:05:12,471 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:05:35,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:37,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:38,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:38,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:38,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:38,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:38,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:38,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:05:42,448 INFO L244 Elim1Store]: Index analysis took 6994 ms