./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-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW --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 8617496e14c7e02e61426a9b36d40149cd7ab2d833fa4b8ca7358faa220fba43 --- 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-4e7fbc6 [2022-11-23 13:54:02,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:54:02,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:54:02,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:54:02,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:54:02,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:54:02,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:54:02,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:54:02,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:54:02,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:54:02,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:54:02,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:54:02,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:54:02,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:54:02,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:54:02,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:54:02,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:54:02,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:54:02,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:54:02,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:54:02,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:54:02,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:54:02,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:54:02,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:54:02,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:54:02,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:54:02,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:54:02,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:54:02,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:54:02,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:54:02,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:54:02,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:54:02,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:54:02,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:54:02,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:54:02,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:54:02,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:54:02,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:54:02,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:54:02,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:54:02,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:54:02,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:54:02,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:54:02,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:54:02,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:54:02,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:54:02,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:54:02,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:54:02,841 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:54:02,841 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:54:02,841 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:54:02,841 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:54:02,842 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:54:02,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:54:02,843 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:54:02,843 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:54:02,843 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:54:02,843 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:54:02,844 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:54:02,844 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:54:02,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:54:02,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:54:02,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:54:02,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:54:02,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:54:02,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:54:02,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:54:02,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:54:02,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:54:02,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:54:02,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:54:02,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:54:02,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:54:02,847 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:54:02,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:54:02,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:54:02,848 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:54:02,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:54:02,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:54:02,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:54:02,849 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_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8617496e14c7e02e61426a9b36d40149cd7ab2d833fa4b8ca7358faa220fba43 [2022-11-23 13:54:03,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:54:03,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:54:03,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:54:03,210 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:54:03,211 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:54:03,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i [2022-11-23 13:54:06,217 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:54:07,046 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:54:07,047 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i [2022-11-23 13:54:07,099 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/data/8dfa86c59/037723af8afd4abbaff46599ccb98536/FLAG7da737c40 [2022-11-23 13:54:07,113 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/data/8dfa86c59/037723af8afd4abbaff46599ccb98536 [2022-11-23 13:54:07,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:54:07,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:54:07,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:54:07,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:54:07,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:54:07,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:07" (1/1) ... [2022-11-23 13:54:07,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e8af37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:07, skipping insertion in model container [2022-11-23 13:54:07,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:07" (1/1) ... [2022-11-23 13:54:07,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:54:07,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:54:10,516 WARN L237 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_5907f52f-686c-495c-b3a6-d3d9763b830c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i[416111,416124] [2022-11-23 13:54:10,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:54:10,855 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:54:11,429 WARN L237 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_5907f52f-686c-495c-b3a6-d3d9763b830c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i[416111,416124] [2022-11-23 13:54:11,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:54:11,644 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:54:11,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11 WrapperNode [2022-11-23 13:54:11,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:54:11,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:54:11,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:54:11,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:54:11,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:11,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:12,235 INFO L138 Inliner]: procedures = 421, calls = 6451, calls flagged for inlining = 153, calls inlined = 149, statements flattened = 13642 [2022-11-23 13:54:12,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:54:12,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:54:12,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:54:12,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:54:12,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:12,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:12,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:12,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:12,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:12,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:13,018 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:13,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:13,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:54:13,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:54:13,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:54:13,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:54:13,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (1/1) ... [2022-11-23 13:54:13,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:54:13,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:54:13,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:54:13,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:54:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_delete_i2c_busses [2022-11-23 13:54:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_delete_i2c_busses [2022-11-23 13:54:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_3 [2022-11-23 13:54:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_3 [2022-11-23 13:54:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 13:54:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 13:54:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_fixup_offset [2022-11-23 13:54:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_fixup_offset [2022-11-23 13:54:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure _OUTREGP [2022-11-23 13:54:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure _OUTREGP [2022-11-23 13:54:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 13:54:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 13:54:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_engine_idle___0 [2022-11-23 13:54:13,186 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_engine_idle___0 [2022-11-23 13:54:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_setup_i2c_bus [2022-11-23 13:54:13,186 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_setup_i2c_bus [2022-11-23 13:54:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_engine_idle___1 [2022-11-23 13:54:13,186 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_engine_idle___1 [2022-11-23 13:54:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure var_to_depth [2022-11-23 13:54:13,187 INFO L138 BoogieDeclarations]: Found implementation of procedure var_to_depth [2022-11-23 13:54:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_videomode_to_var [2022-11-23 13:54:13,187 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_videomode_to_var [2022-11-23 13:54:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 13:54:13,187 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 13:54:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_yclk_mclk_sync [2022-11-23 13:54:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_yclk_mclk_sync [2022-11-23 13:54:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_engine_flush___1 [2022-11-23 13:54:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_engine_flush___1 [2022-11-23 13:54:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 13:54:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 13:54:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_pm_init [2022-11-23 13:54:13,189 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_pm_init [2022-11-23 13:54:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure __INPLL___1 [2022-11-23 13:54:13,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __INPLL___1 [2022-11-23 13:54:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure __INPLL___0 [2022-11-23 13:54:13,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __INPLL___0 [2022-11-23 13:54:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure __INPLL___3 [2022-11-23 13:54:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __INPLL___3 [2022-11-23 13:54:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_backlight_device [2022-11-23 13:54:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_backlight_device [2022-11-23 13:54:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 13:54:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 13:54:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 13:54:13,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 13:54:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:54:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_msleep___0 [2022-11-23 13:54:13,191 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_msleep___0 [2022-11-23 13:54:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-23 13:54:13,191 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-23 13:54:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_set_suspend [2022-11-23 13:54:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_set_suspend [2022-11-23 13:54:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_fifo_wait [2022-11-23 13:54:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_fifo_wait [2022-11-23 13:54:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-23 13:54:13,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-23 13:54:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 13:54:13,193 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 13:54:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_save_regs [2022-11-23 13:54:13,193 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_save_regs [2022-11-23 13:54:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 13:54:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-23 13:54:13,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-23 13:54:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 13:54:13,194 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 13:54:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:54:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_enable_dll [2022-11-23 13:54:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_enable_dll [2022-11-23 13:54:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-23 13:54:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-23 13:54:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:54:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure __INPLL [2022-11-23 13:54:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __INPLL [2022-11-23 13:54:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_get_dstbpp [2022-11-23 13:54:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_get_dstbpp [2022-11-23 13:54:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 13:54:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 13:54:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_engine_idle [2022-11-23 13:54:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_engine_idle [2022-11-23 13:54:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_get_mon_name [2022-11-23 13:54:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_get_mon_name [2022-11-23 13:54:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_show_one_edid [2022-11-23 13:54:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_show_one_edid [2022-11-23 13:54:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_write_mode [2022-11-23 13:54:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_write_mode [2022-11-23 13:54:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 13:54:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 13:54:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure INMC [2022-11-23 13:54:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure INMC [2022-11-23 13:54:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_bl_get_level_brightness [2022-11-23 13:54:13,199 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_bl_get_level_brightness [2022-11-23 13:54:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 13:54:13,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 13:54:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:54:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-23 13:54:13,199 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-23 13:54:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_backlight_device [2022-11-23 13:54:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_backlight_device [2022-11-23 13:54:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:54:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 13:54:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 13:54:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:54:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure fb_find_mode [2022-11-23 13:54:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_find_mode [2022-11-23 13:54:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-23 13:54:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-23 13:54:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 13:54:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 13:54:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pll_errata_after_data___3 [2022-11-23 13:54:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pll_errata_after_data___3 [2022-11-23 13:54:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pll_errata_after_data___1 [2022-11-23 13:54:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pll_errata_after_data___1 [2022-11-23 13:54:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pll_errata_after_data___0 [2022-11-23 13:54:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pll_errata_after_data___0 [2022-11-23 13:54:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure OUTMC [2022-11-23 13:54:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure OUTMC [2022-11-23 13:54:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure round_div [2022-11-23 13:54:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure round_div [2022-11-23 13:54:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_disable_dynamic_mode [2022-11-23 13:54:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_disable_dynamic_mode [2022-11-23 13:54:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_del_adapter [2022-11-23 13:54:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_del_adapter [2022-11-23 13:54:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 13:54:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 13:54:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_bl_update_status [2022-11-23 13:54:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_bl_update_status [2022-11-23 13:54:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-23 13:54:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-23 13:54:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:54:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:54:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 13:54:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 13:54:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_var_to_panel_info [2022-11-23 13:54:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_var_to_panel_info [2022-11-23 13:54:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_suspend [2022-11-23 13:54:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_suspend [2022-11-23 13:54:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 13:54:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 13:54:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 13:54:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:54:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 13:54:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 13:54:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_bin_file [2022-11-23 13:54:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_bin_file [2022-11-23 13:54:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLLP [2022-11-23 13:54:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLLP [2022-11-23 13:54:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure framebuffer_release [2022-11-23 13:54:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure framebuffer_release [2022-11-23 13:54:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2022-11-23 13:54:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2022-11-23 13:54:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_crt_is_connected [2022-11-23 13:54:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_crt_is_connected [2022-11-23 13:54:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 13:54:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 13:54:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 13:54:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 13:54:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_probe_i2c_connector [2022-11-23 13:54:13,210 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_probe_i2c_connector [2022-11-23 13:54:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_enable_dynamic_mode [2022-11-23 13:54:13,210 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_enable_dynamic_mode [2022-11-23 13:54:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLL [2022-11-23 13:54:13,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLL [2022-11-23 13:54:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 13:54:13,211 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 13:54:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 13:54:13,211 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 13:54:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 13:54:13,211 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 13:54:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_engine_init [2022-11-23 13:54:13,212 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_engine_init [2022-11-23 13:54:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:54:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:54:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-23 13:54:13,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-23 13:54:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLLP___0 [2022-11-23 13:54:13,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLLP___0 [2022-11-23 13:54:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_screen_blank [2022-11-23 13:54:13,213 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_screen_blank [2022-11-23 13:54:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure fb_dealloc_cmap [2022-11-23 13:54:13,213 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_dealloc_cmap [2022-11-23 13:54:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-11-23 13:54:13,213 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-11-23 13:54:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_unmap_ROM [2022-11-23 13:54:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_unmap_ROM [2022-11-23 13:54:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:54:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_set_par [2022-11-23 13:54:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_set_par [2022-11-23 13:54:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-11-23 13:54:13,215 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-11-23 13:54:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_pci_resume [2022-11-23 13:54:13,215 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_pci_resume [2022-11-23 13:54:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure bl_get_data [2022-11-23 13:54:13,215 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_get_data [2022-11-23 13:54:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modedb [2022-11-23 13:54:13,215 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modedb [2022-11-23 13:54:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_pci_unregister [2022-11-23 13:54:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_pci_unregister [2022-11-23 13:54:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-23 13:54:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-23 13:54:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_full_reset_sdram [2022-11-23 13:54:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_full_reset_sdram [2022-11-23 13:54:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_fifo_wait___2 [2022-11-23 13:54:13,217 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_fifo_wait___2 [2022-11-23 13:54:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_fifo_wait___1 [2022-11-23 13:54:13,217 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_fifo_wait___1 [2022-11-23 13:54:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_fifo_wait___0 [2022-11-23 13:54:13,217 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_fifo_wait___0 [2022-11-23 13:54:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_sync [2022-11-23 13:54:13,218 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_sync [2022-11-23 13:54:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_program_mode_reg [2022-11-23 13:54:13,218 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_program_mode_reg [2022-11-23 13:54:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 13:54:13,218 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 13:54:13,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:54:13,219 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_msleep [2022-11-23 13:54:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_msleep [2022-11-23 13:54:13,219 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLL___3 [2022-11-23 13:54:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLL___3 [2022-11-23 13:54:13,219 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLL___1 [2022-11-23 13:54:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLL___1 [2022-11-23 13:54:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLL___0 [2022-11-23 13:54:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLL___0 [2022-11-23 13:54:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 13:54:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 13:54:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_map_ROM [2022-11-23 13:54:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_map_ROM [2022-11-23 13:54:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 13:54:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 13:54:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure pci_request_region [2022-11-23 13:54:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_request_region [2022-11-23 13:54:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_setcolreg [2022-11-23 13:54:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_setcolreg [2022-11-23 13:54:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pll_errata_after_data [2022-11-23 13:54:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pll_errata_after_data [2022-11-23 13:54:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-23 13:54:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-23 13:54:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_restore_regs [2022-11-23 13:54:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_restore_regs [2022-11-23 13:54:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2022-11-23 13:54:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2022-11-23 13:54:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-23 13:54:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-23 13:54:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 13:54:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 13:54:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 13:54:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 13:54:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pll_errata_after_index [2022-11-23 13:54:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pll_errata_after_index [2022-11-23 13:54:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:54:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_engine_reset [2022-11-23 13:54:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_engine_reset [2022-11-23 13:54:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_bin_file [2022-11-23 13:54:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_bin_file [2022-11-23 13:54:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-23 13:54:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-23 13:54:14,487 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:54:14,493 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:54:15,872 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 13:54:47,381 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:54:54,357 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:54:54,359 INFO L300 CfgBuilder]: Removed 41 assume(true) statements. [2022-11-23 13:54:54,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:54 BoogieIcfgContainer [2022-11-23 13:54:54,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:54:54,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:54:54,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:54:54,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:54:54,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:54:07" (1/3) ... [2022-11-23 13:54:54,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e10412d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:54:54, skipping insertion in model container [2022-11-23 13:54:54,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:11" (2/3) ... [2022-11-23 13:54:54,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e10412d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:54:54, skipping insertion in model container [2022-11-23 13:54:54,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:54" (3/3) ... [2022-11-23 13:54:54,383 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i [2022-11-23 13:54:54,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:54:54,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:54:54,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:54:54,804 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;@17dc48e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:54:54,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:54:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 3791 states, 2176 states have (on average 1.2394301470588236) internal successors, (2697), 2314 states have internal predecessors, (2697), 1531 states have call successors, (1531), 119 states have call predecessors, (1531), 118 states have return successors, (1524), 1511 states have call predecessors, (1524), 1524 states have call successors, (1524) [2022-11-23 13:54:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-23 13:54:54,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:54,875 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-23 13:54:54,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:54:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1076811452, now seen corresponding path program 1 times [2022-11-23 13:54:54,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:54:54,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083102917] [2022-11-23 13:54:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:54,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:54:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2022-11-23 13:54:56,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:54:56,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083102917] [2022-11-23 13:54:56,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083102917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:54:56,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:54:56,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:54:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560511459] [2022-11-23 13:54:56,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:54:56,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:54:56,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:54:57,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:54:57,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:54:57,012 INFO L87 Difference]: Start difference. First operand has 3791 states, 2176 states have (on average 1.2394301470588236) internal successors, (2697), 2314 states have internal predecessors, (2697), 1531 states have call successors, (1531), 119 states have call predecessors, (1531), 118 states have return successors, (1524), 1511 states have call predecessors, (1524), 1524 states have call successors, (1524) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-23 13:54:59,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:02,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:04,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:05,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:08,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:11,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:14,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:16,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:19,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:21,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:24,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:27,656 INFO L93 Difference]: Finished difference Result 10289 states and 15662 transitions. [2022-11-23 13:55:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:27,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 274 [2022-11-23 13:55:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:27,761 INFO L225 Difference]: With dead ends: 10289 [2022-11-23 13:55:27,761 INFO L226 Difference]: Without dead ends: 6535 [2022-11-23 13:55:27,810 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 [2022-11-23 13:55:27,819 INFO L413 NwaCegarLoop]: 6407 mSDtfsCounter, 4314 mSDsluCounter, 5149 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 3 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 11556 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:27,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4315 Valid, 11556 Invalid, 752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 740 Invalid, 9 Unknown, 0 Unchecked, 30.0s Time] [2022-11-23 13:55:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6535 states. [2022-11-23 13:55:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6535 to 6532. [2022-11-23 13:55:29,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6532 states, 3633 states have (on average 1.2257087806220754) internal successors, (4453), 3820 states have internal predecessors, (4453), 2682 states have call successors, (2682), 217 states have call predecessors, (2682), 216 states have return successors, (2676), 2647 states have call predecessors, (2676), 2675 states have call successors, (2676) [2022-11-23 13:55:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 9811 transitions. [2022-11-23 13:55:29,116 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 9811 transitions. Word has length 274 [2022-11-23 13:55:29,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:29,122 INFO L495 AbstractCegarLoop]: Abstraction has 6532 states and 9811 transitions. [2022-11-23 13:55:29,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-23 13:55:29,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 9811 transitions. [2022-11-23 13:55:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-23 13:55:29,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:29,138 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-11-23 13:55:29,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:55:29,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:29,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1640568638, now seen corresponding path program 1 times [2022-11-23 13:55:29,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:29,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218333690] [2022-11-23 13:55:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:29,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-23 13:55:30,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:30,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218333690] [2022-11-23 13:55:30,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218333690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:30,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:30,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:55:30,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771187259] [2022-11-23 13:55:30,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:30,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:30,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:30,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:30,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:30,771 INFO L87 Difference]: Start difference. First operand 6532 states and 9811 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 13:55:32,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:35,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:38,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:40,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:42,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:43,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:45,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:47,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:50,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:53,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:55:56,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:57,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:55:59,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:03,495 INFO L93 Difference]: Finished difference Result 12276 states and 18448 transitions. [2022-11-23 13:56:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:03,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 289 [2022-11-23 13:56:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:03,617 INFO L225 Difference]: With dead ends: 12276 [2022-11-23 13:56:03,617 INFO L226 Difference]: Without dead ends: 12273 [2022-11-23 13:56:03,632 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 [2022-11-23 13:56:03,633 INFO L413 NwaCegarLoop]: 6336 mSDtfsCounter, 4352 mSDsluCounter, 5046 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4354 SdHoareTripleChecker+Valid, 11382 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:03,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4354 Valid, 11382 Invalid, 729 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 720 Invalid, 8 Unknown, 0 Unchecked, 32.2s Time] [2022-11-23 13:56:03,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12273 states. [2022-11-23 13:56:05,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12273 to 12266. [2022-11-23 13:56:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12266 states, 6778 states have (on average 1.2238123340218354) internal successors, (8295), 7143 states have internal predecessors, (8295), 5074 states have call successors, (5074), 414 states have call predecessors, (5074), 413 states have return successors, (5070), 5009 states have call predecessors, (5070), 5067 states have call successors, (5070) [2022-11-23 13:56:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12266 states to 12266 states and 18439 transitions. [2022-11-23 13:56:05,355 INFO L78 Accepts]: Start accepts. Automaton has 12266 states and 18439 transitions. Word has length 289 [2022-11-23 13:56:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:05,360 INFO L495 AbstractCegarLoop]: Abstraction has 12266 states and 18439 transitions. [2022-11-23 13:56:05,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 13:56:05,361 INFO L276 IsEmpty]: Start isEmpty. Operand 12266 states and 18439 transitions. [2022-11-23 13:56:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-23 13:56:05,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:05,373 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:56:05,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:56:05,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:56:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash -684510900, now seen corresponding path program 1 times [2022-11-23 13:56:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:05,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056517457] [2022-11-23 13:56:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:05,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-23 13:56:06,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056517457] [2022-11-23 13:56:06,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056517457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:06,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:06,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:56:06,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549533662] [2022-11-23 13:56:06,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:06,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:06,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:06,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:06,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:06,548 INFO L87 Difference]: Start difference. First operand 12266 states and 18439 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 13:56:08,676 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 [] [2022-11-23 13:56:10,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:12,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:14,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:16,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:18,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:20,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:23,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:25,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:26,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:28,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:31,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:34,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:36,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:38,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:41,011 INFO L93 Difference]: Finished difference Result 18008 states and 27071 transitions. [2022-11-23 13:56:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:56:41,011 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), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 290 [2022-11-23 13:56:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:41,163 INFO L225 Difference]: With dead ends: 18008 [2022-11-23 13:56:41,163 INFO L226 Difference]: Without dead ends: 18005 [2022-11-23 13:56:41,177 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 [2022-11-23 13:56:41,180 INFO L413 NwaCegarLoop]: 6611 mSDtfsCounter, 4346 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 11660 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:41,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4347 Valid, 11660 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 742 Invalid, 9 Unknown, 0 Unchecked, 33.8s Time] [2022-11-23 13:56:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18005 states. [2022-11-23 13:56:42,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18005 to 18000. [2022-11-23 13:56:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18000 states, 9923 states have (on average 1.2230172326917264) internal successors, (12136), 10466 states have internal predecessors, (12136), 7465 states have call successors, (7465), 612 states have call predecessors, (7465), 611 states have return successors, (7463), 7370 states have call predecessors, (7463), 7458 states have call successors, (7463) [2022-11-23 13:56:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18000 states to 18000 states and 27064 transitions. [2022-11-23 13:56:43,069 INFO L78 Accepts]: Start accepts. Automaton has 18000 states and 27064 transitions. Word has length 290 [2022-11-23 13:56:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:43,073 INFO L495 AbstractCegarLoop]: Abstraction has 18000 states and 27064 transitions. [2022-11-23 13:56:43,074 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), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 13:56:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 18000 states and 27064 transitions. [2022-11-23 13:56:43,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-11-23 13:56:43,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:43,080 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-11-23 13:56:43,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:56:43,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:56:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:43,082 INFO L85 PathProgramCache]: Analyzing trace with hash 252472321, now seen corresponding path program 1 times [2022-11-23 13:56:43,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:43,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341278110] [2022-11-23 13:56:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:43,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:56:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-23 13:56:44,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:44,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341278110] [2022-11-23 13:56:44,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341278110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:56:44,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:56:44,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:56:44,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586341026] [2022-11-23 13:56:44,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:56:44,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:56:44,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:44,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:56:44,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:56:44,058 INFO L87 Difference]: Start difference. First operand 18000 states and 27064 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 13:56:46,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:48,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:49,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:52,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:56:55,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:56:57,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:00,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:03,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:05,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:08,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:10,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:57:12,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:57:15,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:57:18,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:19,476 INFO L93 Difference]: Finished difference Result 18210 states and 27346 transitions. [2022-11-23 13:57:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:19,476 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), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 291 [2022-11-23 13:57:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:19,616 INFO L225 Difference]: With dead ends: 18210 [2022-11-23 13:57:19,616 INFO L226 Difference]: Without dead ends: 18207 [2022-11-23 13:57:19,636 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 [2022-11-23 13:57:19,637 INFO L413 NwaCegarLoop]: 6391 mSDtfsCounter, 4557 mSDsluCounter, 5052 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4558 SdHoareTripleChecker+Valid, 11443 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:19,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4558 Valid, 11443 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 721 Invalid, 9 Unknown, 0 Unchecked, 34.6s Time] [2022-11-23 13:57:19,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18207 states. [2022-11-23 13:57:21,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18207 to 18202. [2022-11-23 13:57:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18202 states, 10040 states have (on average 1.222609561752988) internal successors, (12275), 10586 states have internal predecessors, (12275), 7533 states have call successors, (7533), 629 states have call predecessors, (7533), 628 states have return successors, (7531), 7438 states have call predecessors, (7531), 7526 states have call successors, (7531) [2022-11-23 13:57:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18202 states to 18202 states and 27339 transitions. [2022-11-23 13:57:21,848 INFO L78 Accepts]: Start accepts. Automaton has 18202 states and 27339 transitions. Word has length 291 [2022-11-23 13:57:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:21,850 INFO L495 AbstractCegarLoop]: Abstraction has 18202 states and 27339 transitions. [2022-11-23 13:57:21,850 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), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 13:57:21,852 INFO L276 IsEmpty]: Start isEmpty. Operand 18202 states and 27339 transitions. [2022-11-23 13:57:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-23 13:57:21,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:21,859 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-11-23 13:57:21,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:57:21,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:57:21,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash -765814033, now seen corresponding path program 1 times [2022-11-23 13:57:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:21,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902249437] [2022-11-23 13:57:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-23 13:57:22,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:22,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902249437] [2022-11-23 13:57:22,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902249437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:22,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:22,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:57:22,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977951561] [2022-11-23 13:57:22,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:22,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:22,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:22,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:22,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:22,795 INFO L87 Difference]: Start difference. First operand 18202 states and 27339 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 13:57:25,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:27,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:30,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:57:32,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:57:34,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:36,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:38,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:40,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:43,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:45,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:57:48,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:57:49,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:57:51,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:57:56,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:57:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:57,183 INFO L93 Difference]: Finished difference Result 18210 states and 27346 transitions. [2022-11-23 13:57:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:57,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 292 [2022-11-23 13:57:57,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:57,310 INFO L225 Difference]: With dead ends: 18210 [2022-11-23 13:57:57,310 INFO L226 Difference]: Without dead ends: 18207 [2022-11-23 13:57:57,324 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 [2022-11-23 13:57:57,325 INFO L413 NwaCegarLoop]: 6336 mSDtfsCounter, 4345 mSDsluCounter, 5055 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 11391 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:57,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4347 Valid, 11391 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 718 Invalid, 10 Unknown, 0 Unchecked, 33.6s Time] [2022-11-23 13:57:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18207 states. [2022-11-23 13:57:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18207 to 18203. [2022-11-23 13:57:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18203 states, 10041 states have (on average 1.2225873916940544) internal successors, (12276), 10587 states have internal predecessors, (12276), 7533 states have call successors, (7533), 629 states have call predecessors, (7533), 628 states have return successors, (7531), 7438 states have call predecessors, (7531), 7526 states have call successors, (7531) [2022-11-23 13:57:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18203 states to 18203 states and 27340 transitions. [2022-11-23 13:57:59,665 INFO L78 Accepts]: Start accepts. Automaton has 18203 states and 27340 transitions. Word has length 292 [2022-11-23 13:57:59,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:59,666 INFO L495 AbstractCegarLoop]: Abstraction has 18203 states and 27340 transitions. [2022-11-23 13:57:59,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 13:57:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 18203 states and 27340 transitions. [2022-11-23 13:57:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-23 13:57:59,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:59,676 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-11-23 13:57:59,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:57:59,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:57:59,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:59,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2027052228, now seen corresponding path program 1 times [2022-11-23 13:57:59,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:59,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665610181] [2022-11-23 13:57:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:59,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:58:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:58:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-23 13:58:01,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:58:01,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665610181] [2022-11-23 13:58:01,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665610181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:58:01,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:58:01,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:58:01,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205083969] [2022-11-23 13:58:01,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:58:01,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:58:01,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:58:01,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:58:01,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:58:01,031 INFO L87 Difference]: Start difference. First operand 18203 states and 27340 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 13:58:03,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:05,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:07,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:58:10,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:58:12,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:58:15,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:58:17,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:19,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:21,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:23,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:26,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:28,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:31,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:58:33,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:58:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:58:35,296 INFO L93 Difference]: Finished difference Result 29691 states and 44616 transitions. [2022-11-23 13:58:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:58:35,297 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), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 293 [2022-11-23 13:58:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:58:35,544 INFO L225 Difference]: With dead ends: 29691 [2022-11-23 13:58:35,545 INFO L226 Difference]: Without dead ends: 29682 [2022-11-23 13:58:35,561 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 [2022-11-23 13:58:35,562 INFO L413 NwaCegarLoop]: 6413 mSDtfsCounter, 4360 mSDsluCounter, 5051 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 11464 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:58:35,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4362 Valid, 11464 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 727 Invalid, 11 Unknown, 0 Unchecked, 33.3s Time] [2022-11-23 13:58:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29682 states. [2022-11-23 13:58:38,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29682 to 29663. [2022-11-23 13:58:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29663 states, 16324 states have (on average 1.222004410683656) internal successors, (19948), 17227 states have internal predecessors, (19948), 12318 states have call successors, (12318), 1021 states have call predecessors, (12318), 1020 states have return successors, (12320), 12163 states have call predecessors, (12320), 12311 states have call successors, (12320) [2022-11-23 13:58:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29663 states to 29663 states and 44586 transitions. [2022-11-23 13:58:38,330 INFO L78 Accepts]: Start accepts. Automaton has 29663 states and 44586 transitions. Word has length 293 [2022-11-23 13:58:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:58:38,331 INFO L495 AbstractCegarLoop]: Abstraction has 29663 states and 44586 transitions. [2022-11-23 13:58:38,331 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), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 13:58:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 29663 states and 44586 transitions. [2022-11-23 13:58:38,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-23 13:58:38,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:58:38,346 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-23 13:58:38,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:58:38,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:58:38,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:58:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1160433901, now seen corresponding path program 1 times [2022-11-23 13:58:38,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:58:38,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655782842] [2022-11-23 13:58:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:58:38,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:58:38,788 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:58:38,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765607719] [2022-11-23 13:58:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:58:38,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:58:38,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:58:38,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:58:38,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:58:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:58:42,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 7791 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 13:58:42,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:58:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-11-23 13:58:42,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:58:42,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:58:42,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655782842] [2022-11-23 13:58:42,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:58:42,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765607719] [2022-11-23 13:58:42,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765607719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:58:42,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:58:42,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:58:42,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985634790] [2022-11-23 13:58:42,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:58:42,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:58:42,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:58:42,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:58:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:58:42,461 INFO L87 Difference]: Start difference. First operand 29663 states and 44586 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 13:58:44,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:47,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:49,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:51,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:58:52,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:58:54,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:58:57,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:58:59,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:59:01,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:03,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:05,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:09,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:11,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:14,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:59:17,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:59:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:59:20,342 INFO L93 Difference]: Finished difference Result 85396 states and 128371 transitions. [2022-11-23 13:59:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:59:20,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 315 [2022-11-23 13:59:20,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:59:20,860 INFO L225 Difference]: With dead ends: 85396 [2022-11-23 13:59:20,860 INFO L226 Difference]: Without dead ends: 55793 [2022-11-23 13:59:21,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:59:21,064 INFO L413 NwaCegarLoop]: 6330 mSDtfsCounter, 3922 mSDsluCounter, 5105 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 11 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3922 SdHoareTripleChecker+Valid, 11435 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:59:21,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3922 Valid, 11435 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 771 Invalid, 11 Unknown, 0 Unchecked, 35.2s Time] [2022-11-23 13:59:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55793 states. [2022-11-23 13:59:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55793 to 55763. [2022-11-23 13:59:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55763 states, 30359 states have (on average 1.210711815277183) internal successors, (36756), 32102 states have internal predecessors, (36756), 23483 states have call successors, (23483), 1921 states have call predecessors, (23483), 1920 states have return successors, (23485), 23188 states have call predecessors, (23485), 23476 states have call successors, (23485) [2022-11-23 13:59:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55763 states to 55763 states and 83724 transitions. [2022-11-23 13:59:26,983 INFO L78 Accepts]: Start accepts. Automaton has 55763 states and 83724 transitions. Word has length 315 [2022-11-23 13:59:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:59:26,984 INFO L495 AbstractCegarLoop]: Abstraction has 55763 states and 83724 transitions. [2022-11-23 13:59:26,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 13:59:26,985 INFO L276 IsEmpty]: Start isEmpty. Operand 55763 states and 83724 transitions. [2022-11-23 13:59:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-23 13:59:27,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:27,009 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:59:27,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:59:27,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 13:59:27,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:59:27,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:27,226 INFO L85 PathProgramCache]: Analyzing trace with hash 562193966, now seen corresponding path program 1 times [2022-11-23 13:59:27,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:27,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116139594] [2022-11-23 13:59:27,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:27,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:27,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:59:27,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256793557] [2022-11-23 13:59:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:27,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:59:27,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:59:27,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:59:28,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:59:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:31,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 7987 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:59:31,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:59:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1471 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1471 trivial. 0 not checked. [2022-11-23 13:59:32,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:59:32,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:32,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116139594] [2022-11-23 13:59:32,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:59:32,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256793557] [2022-11-23 13:59:32,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256793557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:59:32,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:59:32,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:59:32,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606897490] [2022-11-23 13:59:32,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:59:32,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:59:32,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:32,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:59:32,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:59:32,715 INFO L87 Difference]: Start difference. First operand 55763 states and 83724 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2022-11-23 13:59:34,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:37,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:39,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:59:41,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:44,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:59:46,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:47,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:49,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:52,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:54,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:57,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:59:59,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:00:01,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:00:04,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:00:06,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:06,938 INFO L93 Difference]: Finished difference Result 66734 states and 100197 transitions. [2022-11-23 14:00:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:00:06,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 359 [2022-11-23 14:00:06,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:07,250 INFO L225 Difference]: With dead ends: 66734 [2022-11-23 14:00:07,250 INFO L226 Difference]: Without dead ends: 66725 [2022-11-23 14:00:07,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:00:07,278 INFO L413 NwaCegarLoop]: 6355 mSDtfsCounter, 4282 mSDsluCounter, 5051 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4283 SdHoareTripleChecker+Valid, 11406 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:07,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4283 Valid, 11406 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 719 Invalid, 9 Unknown, 0 Unchecked, 31.5s Time] [2022-11-23 14:00:07,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66725 states. [2022-11-23 14:00:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66725 to 66711. [2022-11-23 14:00:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66711 states, 36304 states have (on average 1.2105002203613926) internal successors, (43946), 38393 states have internal predecessors, (43946), 28108 states have call successors, (28108), 2299 states have call predecessors, (28108), 2298 states have return successors, (28112), 27755 states have call predecessors, (28112), 28101 states have call successors, (28112) [2022-11-23 14:00:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66711 states to 66711 states and 100166 transitions. [2022-11-23 14:00:13,587 INFO L78 Accepts]: Start accepts. Automaton has 66711 states and 100166 transitions. Word has length 359 [2022-11-23 14:00:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:13,588 INFO L495 AbstractCegarLoop]: Abstraction has 66711 states and 100166 transitions. [2022-11-23 14:00:13,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2022-11-23 14:00:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 66711 states and 100166 transitions. [2022-11-23 14:00:13,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-11-23 14:00:13,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:00:13,612 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:00:13,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:00:13,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 14:00:13,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:00:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:00:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash 628058816, now seen corresponding path program 1 times [2022-11-23 14:00:13,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:00:13,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248702227] [2022-11-23 14:00:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:13,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:00:14,206 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:00:14,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285434828] [2022-11-23 14:00:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:00:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:00:14,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:00:14,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:00:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:00:17,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 8103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:00:17,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:00:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1475 trivial. 0 not checked. [2022-11-23 14:00:18,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:00:18,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:00:18,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248702227] [2022-11-23 14:00:18,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:00:18,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285434828] [2022-11-23 14:00:18,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285434828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:00:18,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:00:18,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:00:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310223869] [2022-11-23 14:00:18,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:00:18,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:00:18,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:00:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:00:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:00:18,759 INFO L87 Difference]: Start difference. First operand 66711 states and 100166 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-23 14:00:20,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:23,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:25,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:00:27,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:29,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:00:32,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:00:33,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:37,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:40,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:42,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:44,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:00:46,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:00:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:50,851 INFO L93 Difference]: Finished difference Result 66740 states and 100181 transitions. [2022-11-23 14:00:50,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:00:50,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 362 [2022-11-23 14:00:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:51,153 INFO L225 Difference]: With dead ends: 66740 [2022-11-23 14:00:51,153 INFO L226 Difference]: Without dead ends: 66734 [2022-11-23 14:00:51,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:00:51,189 INFO L413 NwaCegarLoop]: 6335 mSDtfsCounter, 4252 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 11384 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:51,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4253 Valid, 11384 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 718 Invalid, 9 Unknown, 0 Unchecked, 29.5s Time] [2022-11-23 14:00:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66734 states. [2022-11-23 14:00:57,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66734 to 66682. [2022-11-23 14:00:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66682 states, 36288 states have (on average 1.2104552469135803) internal successors, (43925), 38377 states have internal predecessors, (43925), 28093 states have call successors, (28093), 2301 states have call predecessors, (28093), 2300 states have return successors, (28097), 27740 states have call predecessors, (28097), 28086 states have call successors, (28097) [2022-11-23 14:00:57,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66682 states to 66682 states and 100115 transitions. [2022-11-23 14:00:57,993 INFO L78 Accepts]: Start accepts. Automaton has 66682 states and 100115 transitions. Word has length 362 [2022-11-23 14:00:57,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:57,994 INFO L495 AbstractCegarLoop]: Abstraction has 66682 states and 100115 transitions. [2022-11-23 14:00:57,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-23 14:00:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 66682 states and 100115 transitions. [2022-11-23 14:00:58,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2022-11-23 14:00:58,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:00:58,246 INFO L195 NwaCegarLoop]: trace histogram [45, 13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:00:58,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:00:58,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5907f52f-686c-495c-b3a6-d3d9763b830c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:00:58,465 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:00:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:00:58,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1203583038, now seen corresponding path program 1 times [2022-11-23 14:00:58,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:00:58,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805891667] [2022-11-23 14:00:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:00:58,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:00:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:01:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3524 trivial. 0 not checked. [2022-11-23 14:01:00,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:01:00,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805891667] [2022-11-23 14:01:00,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805891667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:01:00,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:01:00,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:01:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105650171] [2022-11-23 14:01:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:01:00,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:01:00,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:01:00,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:01:00,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:01:00,500 INFO L87 Difference]: Start difference. First operand 66682 states and 100115 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-23 14:01:02,612 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 [] [2022-11-23 14:01:05,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:08,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:01:09,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:01:13,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:01:15,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:17,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:18,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:01:21,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:23,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:27,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:29,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:31,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:33,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:01:35,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:01:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:01:38,302 INFO L93 Difference]: Finished difference Result 145467 states and 217243 transitions. [2022-11-23 14:01:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:01:38,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 819 [2022-11-23 14:01:38,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:01:38,883 INFO L225 Difference]: With dead ends: 145467 [2022-11-23 14:01:38,883 INFO L226 Difference]: Without dead ends: 78845 [2022-11-23 14:01:39,149 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 [2022-11-23 14:01:39,150 INFO L413 NwaCegarLoop]: 5768 mSDtfsCounter, 1035 mSDsluCounter, 5098 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 10866 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:01:39,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 10866 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 823 Invalid, 8 Unknown, 0 Unchecked, 34.5s Time] [2022-11-23 14:01:39,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78845 states. [2022-11-23 14:01:45,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78845 to 78804. [2022-11-23 14:01:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78804 states, 44127 states have (on average 1.2304938019806468) internal successors, (54298), 46444 states have internal predecessors, (54298), 31414 states have call successors, (31414), 3263 states have call predecessors, (31414), 3262 states have return successors, (31430), 31025 states have call predecessors, (31430), 31407 states have call successors, (31430) [2022-11-23 14:01:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78804 states to 78804 states and 117142 transitions. [2022-11-23 14:01:46,152 INFO L78 Accepts]: Start accepts. Automaton has 78804 states and 117142 transitions. Word has length 819 [2022-11-23 14:01:46,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:01:46,153 INFO L495 AbstractCegarLoop]: Abstraction has 78804 states and 117142 transitions. [2022-11-23 14:01:46,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-23 14:01:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 78804 states and 117142 transitions. [2022-11-23 14:01:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2022-11-23 14:01:46,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:01:46,341 INFO L195 NwaCegarLoop]: trace histogram [45, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:01:46,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:01:46,341 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:01:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:01:46,342 INFO L85 PathProgramCache]: Analyzing trace with hash 467991560, now seen corresponding path program 1 times [2022-11-23 14:01:46,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:01:46,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715502301] [2022-11-23 14:01:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:01:46,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:01:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:01:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3651 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2022-11-23 14:01:48,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:01:48,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715502301] [2022-11-23 14:01:48,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715502301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:01:48,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:01:48,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:01:48,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044707080] [2022-11-23 14:01:48,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:01:48,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:01:48,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:01:48,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:01:48,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:01:48,450 INFO L87 Difference]: Start difference. First operand 78804 states and 117142 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-23 14:01:50,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:52,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:54,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:01:55,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:01:57,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:01:59,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:02:00,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:02:02,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:02:05,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:08,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:10,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:13,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:15,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:18,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:02:20,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:02:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:02:22,564 INFO L93 Difference]: Finished difference Result 119146 states and 177012 transitions. [2022-11-23 14:02:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:02:22,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 842 [2022-11-23 14:02:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:02:22,767 INFO L225 Difference]: With dead ends: 119146 [2022-11-23 14:02:22,767 INFO L226 Difference]: Without dead ends: 40396 [2022-11-23 14:02:23,246 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 [2022-11-23 14:02:23,246 INFO L413 NwaCegarLoop]: 5154 mSDtfsCounter, 17 mSDsluCounter, 5135 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10289 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:02:23,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10289 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 721 Invalid, 10 Unknown, 0 Unchecked, 32.1s Time] [2022-11-23 14:02:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40396 states. [2022-11-23 14:02:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40396 to 40296. [2022-11-23 14:02:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40296 states, 22617 states have (on average 1.2318609895211567) internal successors, (27861), 23785 states have internal predecessors, (27861), 15982 states have call successors, (15982), 1697 states have call predecessors, (15982), 1696 states have return successors, (15986), 15785 states have call predecessors, (15986), 15975 states have call successors, (15986) [2022-11-23 14:02:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40296 states to 40296 states and 59829 transitions. [2022-11-23 14:02:26,472 INFO L78 Accepts]: Start accepts. Automaton has 40296 states and 59829 transitions. Word has length 842 [2022-11-23 14:02:26,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:02:26,473 INFO L495 AbstractCegarLoop]: Abstraction has 40296 states and 59829 transitions. [2022-11-23 14:02:26,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-23 14:02:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 40296 states and 59829 transitions. [2022-11-23 14:02:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2022-11-23 14:02:26,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:02:26,580 INFO L195 NwaCegarLoop]: trace histogram [45, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:02:26,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:02:26,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:02:26,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:02:26,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2071380079, now seen corresponding path program 1 times [2022-11-23 14:02:26,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:02:26,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095276639] [2022-11-23 14:02:26,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:02:26,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:02:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:02:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3901 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3889 trivial. 0 not checked. [2022-11-23 14:02:29,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:02:29,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095276639] [2022-11-23 14:02:29,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095276639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:02:29,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:02:29,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:02:29,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259394367] [2022-11-23 14:02:29,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:02:29,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:02:29,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:02:29,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:02:29,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:02:29,161 INFO L87 Difference]: Start difference. First operand 40296 states and 59829 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2022-11-23 14:02:31,272 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 [] [2022-11-23 14:02:32,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:34,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:36,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:02:38,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:02:40,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:02:42,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:02:46,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:48,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:50,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:53,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:55,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:02:58,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:03:00,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:03:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:03:02,083 INFO L93 Difference]: Finished difference Result 60848 states and 90376 transitions. [2022-11-23 14:03:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:03:02,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 866 [2022-11-23 14:03:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:03:02,225 INFO L225 Difference]: With dead ends: 60848 [2022-11-23 14:03:02,225 INFO L226 Difference]: Without dead ends: 40433 [2022-11-23 14:03:02,288 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 [2022-11-23 14:03:02,288 INFO L413 NwaCegarLoop]: 5175 mSDtfsCounter, 47 mSDsluCounter, 5139 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 6 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 10314 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:03:02,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 10314 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 734 Invalid, 10 Unknown, 0 Unchecked, 31.6s Time] [2022-11-23 14:03:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40433 states. [2022-11-23 14:03:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40433 to 40302. [2022-11-23 14:03:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40302 states, 22623 states have (on average 1.231799496088052) internal successors, (27867), 23791 states have internal predecessors, (27867), 15982 states have call successors, (15982), 1697 states have call predecessors, (15982), 1696 states have return successors, (15986), 15785 states have call predecessors, (15986), 15975 states have call successors, (15986) [2022-11-23 14:03:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40302 states to 40302 states and 59835 transitions. [2022-11-23 14:03:05,481 INFO L78 Accepts]: Start accepts. Automaton has 40302 states and 59835 transitions. Word has length 866 [2022-11-23 14:03:05,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:03:05,481 INFO L495 AbstractCegarLoop]: Abstraction has 40302 states and 59835 transitions. [2022-11-23 14:03:05,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2022-11-23 14:03:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 40302 states and 59835 transitions. [2022-11-23 14:03:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2022-11-23 14:03:05,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:03:05,551 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:03:05,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:03:05,551 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:03:05,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:03:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash 392932019, now seen corresponding path program 1 times [2022-11-23 14:03:05,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:03:05,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141630868] [2022-11-23 14:03:05,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:03:05,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:03:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:03:08,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4177 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2022-11-23 14:03:08,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:03:08,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141630868] [2022-11-23 14:03:08,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141630868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:03:08,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:03:08,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:03:08,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936325524] [2022-11-23 14:03:08,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:03:08,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:03:08,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:03:08,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:03:08,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:03:08,600 INFO L87 Difference]: Start difference. First operand 40302 states and 59835 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-23 14:03:10,711 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 [] [2022-11-23 14:03:13,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:15,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:03:16,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:03:18,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:03:21,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:03:23,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:03:25,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:03:29,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:32,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:34,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:37,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:40,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:42,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:03:45,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:03:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:03:47,684 INFO L93 Difference]: Finished difference Result 60664 states and 90113 transitions. [2022-11-23 14:03:47,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:03:47,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 881 [2022-11-23 14:03:47,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:03:47,887 INFO L225 Difference]: With dead ends: 60664 [2022-11-23 14:03:47,887 INFO L226 Difference]: Without dead ends: 40394 [2022-11-23 14:03:47,973 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 [2022-11-23 14:03:47,974 INFO L413 NwaCegarLoop]: 5196 mSDtfsCounter, 205 mSDsluCounter, 10226 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 45 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 15422 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:03:47,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 15422 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1078 Invalid, 13 Unknown, 0 Unchecked, 37.6s Time] [2022-11-23 14:03:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40394 states. [2022-11-23 14:03:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40394 to 40304. [2022-11-23 14:03:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40304 states, 22625 states have (on average 1.2317790055248619) internal successors, (27869), 23793 states have internal predecessors, (27869), 15982 states have call successors, (15982), 1697 states have call predecessors, (15982), 1696 states have return successors, (15986), 15785 states have call predecessors, (15986), 15975 states have call successors, (15986) [2022-11-23 14:03:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40304 states to 40304 states and 59837 transitions. [2022-11-23 14:03:50,780 INFO L78 Accepts]: Start accepts. Automaton has 40304 states and 59837 transitions. Word has length 881 [2022-11-23 14:03:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:03:50,781 INFO L495 AbstractCegarLoop]: Abstraction has 40304 states and 59837 transitions. [2022-11-23 14:03:50,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-23 14:03:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 40304 states and 59837 transitions. [2022-11-23 14:03:51,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2022-11-23 14:03:51,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:03:51,151 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:03:51,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:03:51,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:03:51,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:03:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1373072378, now seen corresponding path program 1 times [2022-11-23 14:03:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:03:51,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796768685] [2022-11-23 14:03:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:03:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:03:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:03:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4177 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2022-11-23 14:03:53,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:03:53,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796768685] [2022-11-23 14:03:53,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796768685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:03:53,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:03:53,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:03:53,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883837349] [2022-11-23 14:03:53,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:03:53,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:03:53,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:03:53,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:03:53,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:03:53,225 INFO L87 Difference]: Start difference. First operand 40304 states and 59837 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-23 14:03:55,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:03:57,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:00,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:04:02,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:04:04,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:04:07,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:10,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:12,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:15,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:17,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:19,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:04:21,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:04:24,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:24,016 INFO L93 Difference]: Finished difference Result 60585 states and 89989 transitions. [2022-11-23 14:04:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:24,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 885 [2022-11-23 14:04:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:24,256 INFO L225 Difference]: With dead ends: 60585 [2022-11-23 14:04:24,256 INFO L226 Difference]: Without dead ends: 40313 [2022-11-23 14:04:24,500 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 [2022-11-23 14:04:24,500 INFO L413 NwaCegarLoop]: 5145 mSDtfsCounter, 8 mSDsluCounter, 5133 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10278 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:24,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10278 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 723 Invalid, 9 Unknown, 0 Unchecked, 29.4s Time] [2022-11-23 14:04:24,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40313 states. [2022-11-23 14:04:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40313 to 40306. [2022-11-23 14:04:27,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40306 states, 22627 states have (on average 1.2317585185839925) internal successors, (27871), 23795 states have internal predecessors, (27871), 15982 states have call successors, (15982), 1697 states have call predecessors, (15982), 1696 states have return successors, (15986), 15785 states have call predecessors, (15986), 15975 states have call successors, (15986) [2022-11-23 14:04:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40306 states to 40306 states and 59839 transitions. [2022-11-23 14:04:27,510 INFO L78 Accepts]: Start accepts. Automaton has 40306 states and 59839 transitions. Word has length 885 [2022-11-23 14:04:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:27,512 INFO L495 AbstractCegarLoop]: Abstraction has 40306 states and 59839 transitions. [2022-11-23 14:04:27,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-23 14:04:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 40306 states and 59839 transitions. [2022-11-23 14:04:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2022-11-23 14:04:27,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:27,629 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:27,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:04:27,630 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1768447944, now seen corresponding path program 1 times [2022-11-23 14:04:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:27,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054409632] [2022-11-23 14:04:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:27,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4177 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2022-11-23 14:04:30,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:30,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054409632] [2022-11-23 14:04:30,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054409632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:30,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:30,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:30,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810897707] [2022-11-23 14:04:30,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:30,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:30,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:30,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:30,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:30,227 INFO L87 Difference]: Start difference. First operand 40306 states and 59839 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-23 14:04:32,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:33,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:36,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:04:38,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:04:41,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:04:43,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:04:47,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:49,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:51,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:53,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:56,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:04:58,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:00,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:02,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:04,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:06,577 INFO L93 Difference]: Finished difference Result 60583 states and 89985 transitions. [2022-11-23 14:05:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:05:06,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 886 [2022-11-23 14:05:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:06,758 INFO L225 Difference]: With dead ends: 60583 [2022-11-23 14:05:06,758 INFO L226 Difference]: Without dead ends: 40309 [2022-11-23 14:05:07,007 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 [2022-11-23 14:05:07,007 INFO L413 NwaCegarLoop]: 5138 mSDtfsCounter, 1 mSDsluCounter, 5135 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10273 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:07,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10273 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 725 Invalid, 10 Unknown, 0 Unchecked, 35.0s Time] [2022-11-23 14:05:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40309 states. [2022-11-23 14:05:09,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40309 to 40307. [2022-11-23 14:05:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40307 states, 22628 states have (on average 1.231748276471628) internal successors, (27872), 23796 states have internal predecessors, (27872), 15982 states have call successors, (15982), 1697 states have call predecessors, (15982), 1696 states have return successors, (15986), 15785 states have call predecessors, (15986), 15975 states have call successors, (15986) [2022-11-23 14:05:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40307 states to 40307 states and 59840 transitions. [2022-11-23 14:05:09,916 INFO L78 Accepts]: Start accepts. Automaton has 40307 states and 59840 transitions. Word has length 886 [2022-11-23 14:05:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:09,916 INFO L495 AbstractCegarLoop]: Abstraction has 40307 states and 59840 transitions. [2022-11-23 14:05:09,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-23 14:05:09,917 INFO L276 IsEmpty]: Start isEmpty. Operand 40307 states and 59840 transitions. [2022-11-23 14:05:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2022-11-23 14:05:09,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:09,987 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:05:09,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 14:05:09,987 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:09,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash -554822033, now seen corresponding path program 1 times [2022-11-23 14:05:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:09,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505777260] [2022-11-23 14:05:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4177 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2022-11-23 14:05:17,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:17,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505777260] [2022-11-23 14:05:17,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505777260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:17,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:17,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:05:17,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47654108] [2022-11-23 14:05:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:17,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:05:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:05:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:05:17,266 INFO L87 Difference]: Start difference. First operand 40307 states and 59840 transitions. Second operand has 9 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-23 14:05:19,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:21,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:23,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:25,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:28,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:32,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:35,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:36,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:38,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:41,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:43,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:44,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:47,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:05:51,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:53,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:55,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:56,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:57,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:05:59,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:02,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:05,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:08,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:12,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:14,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:06:18,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:06:20,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:06:22,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:06:24,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:06:25,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:06:35,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:06:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:39,027 INFO L93 Difference]: Finished difference Result 60722 states and 90195 transitions. [2022-11-23 14:06:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:06:39,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 888 [2022-11-23 14:06:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:39,175 INFO L225 Difference]: With dead ends: 60722 [2022-11-23 14:06:39,175 INFO L226 Difference]: Without dead ends: 40447 [2022-11-23 14:06:39,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:06:39,249 INFO L413 NwaCegarLoop]: 6490 mSDtfsCounter, 4604 mSDsluCounter, 36943 mSDsCounter, 0 mSdLazyCounter, 3137 mSolverCounterSat, 4 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 43433 SdHoareTripleChecker+Invalid, 3156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3137 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:39,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4641 Valid, 43433 Invalid, 3156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 3137 Invalid, 15 Unknown, 0 Unchecked, 79.8s Time] [2022-11-23 14:06:39,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40447 states. [2022-11-23 14:06:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40447 to 40343. [2022-11-23 14:06:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40343 states, 22655 states have (on average 1.2319134848819244) internal successors, (27909), 23822 states have internal predecessors, (27909), 15991 states have call successors, (15991), 1697 states have call predecessors, (15991), 1696 states have return successors, (15995), 15795 states have call predecessors, (15995), 15984 states have call successors, (15995) [2022-11-23 14:06:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40343 states to 40343 states and 59895 transitions. [2022-11-23 14:06:42,701 INFO L78 Accepts]: Start accepts. Automaton has 40343 states and 59895 transitions. Word has length 888 [2022-11-23 14:06:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:42,702 INFO L495 AbstractCegarLoop]: Abstraction has 40343 states and 59895 transitions. [2022-11-23 14:06:42,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-23 14:06:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 40343 states and 59895 transitions. [2022-11-23 14:06:42,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2022-11-23 14:06:42,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:42,778 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:42,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 14:06:42,778 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:06:42,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:42,779 INFO L85 PathProgramCache]: Analyzing trace with hash -276328730, now seen corresponding path program 1 times [2022-11-23 14:06:42,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:42,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758978517] [2022-11-23 14:06:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat