./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--hid--hid-roccat-pyra.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_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/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_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/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_c17e2511-d81a-4284-8a79-9e112f4deaf2/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 2d48abbc06c71aeec5c2fd7c4bfe3a64e4c3a331115f87234999cdb923340216 --- 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 15:25:03,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:25:03,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:25:03,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:25:03,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:25:03,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:25:03,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:25:03,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:25:03,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:25:03,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:25:03,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:25:03,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:25:03,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:25:03,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:25:03,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:25:03,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:25:03,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:25:03,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:25:03,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:25:03,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:25:03,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:25:03,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:25:03,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:25:03,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:25:03,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:25:03,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:25:03,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:25:03,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:25:03,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:25:03,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:25:03,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:25:03,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:25:03,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:25:03,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:25:03,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:25:03,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:25:03,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:25:03,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:25:03,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:25:03,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:25:03,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:25:03,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:25:03,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:25:03,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:25:03,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:25:03,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:25:03,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:25:03,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:25:03,434 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:25:03,434 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:25:03,435 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:25:03,435 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:25:03,435 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:25:03,435 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:25:03,435 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:25:03,436 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:25:03,436 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:25:03,436 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:25:03,436 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:25:03,441 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:25:03,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:25:03,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:25:03,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:25:03,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:25:03,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:25:03,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:25:03,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:25:03,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:25:03,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:25:03,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:25:03,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:25:03,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:25:03,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:25:03,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:25:03,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:25:03,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:25:03,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:25:03,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:25:03,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:25:03,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:25:03,448 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_c17e2511-d81a-4284-8a79-9e112f4deaf2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d48abbc06c71aeec5c2fd7c4bfe3a64e4c3a331115f87234999cdb923340216 [2022-11-23 15:25:03,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:25:03,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:25:03,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:25:03,814 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:25:03,814 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:25:03,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2022-11-23 15:25:06,904 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:25:07,512 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:25:07,513 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2022-11-23 15:25:07,555 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW/data/d15da3d7c/3edf71389fca4d14802e72e320853d86/FLAG8b88f6870 [2022-11-23 15:25:07,581 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW/data/d15da3d7c/3edf71389fca4d14802e72e320853d86 [2022-11-23 15:25:07,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:25:07,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:25:07,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:25:07,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:25:07,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:25:07,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:25:07" (1/1) ... [2022-11-23 15:25:07,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157c7139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:07, skipping insertion in model container [2022-11-23 15:25:07,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:25:07" (1/1) ... [2022-11-23 15:25:07,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:25:07,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:25:09,047 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_c17e2511-d81a-4284-8a79-9e112f4deaf2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i[184130,184143] [2022-11-23 15:25:09,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:25:09,287 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:25:09,629 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_c17e2511-d81a-4284-8a79-9e112f4deaf2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i[184130,184143] [2022-11-23 15:25:09,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:25:09,792 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:25:09,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09 WrapperNode [2022-11-23 15:25:09,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:25:09,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:25:09,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:25:09,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:25:09,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:09,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:10,049 INFO L138 Inliner]: procedures = 205, calls = 1199, calls flagged for inlining = 96, calls inlined = 92, statements flattened = 3364 [2022-11-23 15:25:10,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:25:10,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:25:10,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:25:10,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:25:10,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:10,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:10,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:10,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:10,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:10,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:10,186 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:10,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:10,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:25:10,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:25:10,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:25:10,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:25:10,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (1/1) ... [2022-11-23 15:25:10,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:25:10,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:10,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:25:10,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17e2511-d81a-4284-8a79-9e112f4deaf2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:25:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_common2_receive [2022-11-23 15:25:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_common2_receive [2022-11-23 15:25:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:25:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:25:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure hid_set_drvdata [2022-11-23 15:25:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_set_drvdata [2022-11-23 15:25:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:25:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:25:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure hid_hw_stop [2022-11-23 15:25:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_hw_stop [2022-11-23 15:25:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:25:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:25:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_report_event [2022-11-23 15:25:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_report_event [2022-11-23 15:25:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure hid_get_drvdata [2022-11-23 15:25:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_get_drvdata [2022-11-23 15:25:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:25:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:25:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:25:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:25:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:25:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:25:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 15:25:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 15:25:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_read_profilex_settings [2022-11-23 15:25:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_read_profilex_settings [2022-11-23 15:25:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:25:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure profile_activated [2022-11-23 15:25:10,403 INFO L138 BoogieDeclarations]: Found implementation of procedure profile_activated [2022-11-23 15:25:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:25:10,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_send_control [2022-11-23 15:25:10,404 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_send_control [2022-11-23 15:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:25:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_read_profilex_buttons [2022-11-23 15:25:10,405 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_read_profilex_buttons [2022-11-23 15:25:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 15:25:10,405 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 15:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pyra_lock_of_pyra_device [2022-11-23 15:25:10,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pyra_lock_of_pyra_device [2022-11-23 15:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_show_actual_profile [2022-11-23 15:25:10,406 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_show_actual_profile [2022-11-23 15:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_read [2022-11-23 15:25:10,407 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_read [2022-11-23 15:25:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:25:10,407 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:25:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-23 15:25:10,408 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-23 15:25:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 15:25:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 15:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 15:25:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 15:25:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:25:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:25:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_raw_event [2022-11-23 15:25:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_raw_event [2022-11-23 15:25:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:25:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:25:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pyra_lock_of_pyra_device [2022-11-23 15:25:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pyra_lock_of_pyra_device [2022-11-23 15:25:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_remove [2022-11-23 15:25:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_remove [2022-11-23 15:25:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_common2_send_with_status [2022-11-23 15:25:10,427 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_common2_send_with_status [2022-11-23 15:25:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:25:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-23 15:25:10,427 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-23 15:25:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:25:10,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:25:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_write [2022-11-23 15:25:10,429 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_write [2022-11-23 15:25:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 15:25:10,430 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 15:25:11,348 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:25:11,353 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:25:11,758 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:25:14,811 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:25:15,316 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:25:15,317 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:25:15,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:15 BoogieIcfgContainer [2022-11-23 15:25:15,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:25:15,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:25:15,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:25:15,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:25:15,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:25:07" (1/3) ... [2022-11-23 15:25:15,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b782685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:15, skipping insertion in model container [2022-11-23 15:25:15,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:09" (2/3) ... [2022-11-23 15:25:15,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b782685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:15, skipping insertion in model container [2022-11-23 15:25:15,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:15" (3/3) ... [2022-11-23 15:25:15,331 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2022-11-23 15:25:15,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:25:15,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:25:15,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:25:15,432 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;@30943db8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:25:15,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:25:15,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 776 states, 488 states have (on average 1.403688524590164) internal successors, (685), 521 states have internal predecessors, (685), 254 states have call successors, (254), 33 states have call predecessors, (254), 32 states have return successors, (232), 232 states have call predecessors, (232), 232 states have call successors, (232) [2022-11-23 15:25:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2022-11-23 15:25:15,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:15,526 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:25:15,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:25:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:15,533 INFO L85 PathProgramCache]: Analyzing trace with hash -548171717, now seen corresponding path program 1 times [2022-11-23 15:25:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:25:15,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349537639] [2022-11-23 15:25:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:15,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:25:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 17843 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17843 trivial. 0 not checked. [2022-11-23 15:25:19,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:25:19,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349537639] [2022-11-23 15:25:19,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349537639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:19,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:19,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:25:19,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699543727] [2022-11-23 15:25:19,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:19,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:25:19,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:25:19,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:25:19,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:25:19,192 INFO L87 Difference]: Start difference. First operand has 776 states, 488 states have (on average 1.403688524590164) internal successors, (685), 521 states have internal predecessors, (685), 254 states have call successors, (254), 33 states have call predecessors, (254), 32 states have return successors, (232), 232 states have call predecessors, (232), 232 states have call successors, (232) Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2022-11-23 15:25:21,291 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 15:25:23,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:24,158 WARN L539 Checker$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 15:25:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:24,528 INFO L93 Difference]: Finished difference Result 1813 states and 2818 transitions. [2022-11-23 15:25:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:25:24,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 953 [2022-11-23 15:25:24,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:24,557 INFO L225 Difference]: With dead ends: 1813 [2022-11-23 15:25:24,558 INFO L226 Difference]: Without dead ends: 1181 [2022-11-23 15:25:24,568 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 15:25:24,571 INFO L413 NwaCegarLoop]: 1163 mSDtfsCounter, 752 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:24,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 2202 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-23 15:25:24,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-23 15:25:24,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1177. [2022-11-23 15:25:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 808 states have (on average 1.4059405940594059) internal successors, (1136), 816 states have internal predecessors, (1136), 315 states have call successors, (315), 54 states have call predecessors, (315), 53 states have return successors, (309), 309 states have call predecessors, (309), 309 states have call successors, (309) [2022-11-23 15:25:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1760 transitions. [2022-11-23 15:25:24,734 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1760 transitions. Word has length 953 [2022-11-23 15:25:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:24,738 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1760 transitions. [2022-11-23 15:25:24,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2022-11-23 15:25:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1760 transitions. [2022-11-23 15:25:24,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2022-11-23 15:25:24,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:24,784 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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] [2022-11-23 15:25:24,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:25:24,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:25:24,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash -249422370, now seen corresponding path program 1 times [2022-11-23 15:25:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:25:24,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533200910] [2022-11-23 15:25:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:24,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:25:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2022-11-23 15:25:27,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:25:27,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533200910] [2022-11-23 15:25:27,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533200910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:27,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:27,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:25:27,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960407082] [2022-11-23 15:25:27,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:27,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:25:27,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:25:27,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:25:27,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:25:27,070 INFO L87 Difference]: Start difference. First operand 1177 states and 1760 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-23 15:25:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:28,602 INFO L93 Difference]: Finished difference Result 3054 states and 4565 transitions. [2022-11-23 15:25:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:25:28,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 963 [2022-11-23 15:25:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:28,618 INFO L225 Difference]: With dead ends: 3054 [2022-11-23 15:25:28,618 INFO L226 Difference]: Without dead ends: 2093 [2022-11-23 15:25:28,622 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 15:25:28,624 INFO L413 NwaCegarLoop]: 1096 mSDtfsCounter, 1035 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:28,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1766 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 15:25:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2022-11-23 15:25:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2075. [2022-11-23 15:25:28,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1472 states have (on average 1.436820652173913) internal successors, (2115), 1484 states have internal predecessors, (2115), 498 states have call successors, (498), 105 states have call predecessors, (498), 104 states have return successors, (492), 491 states have call predecessors, (492), 492 states have call successors, (492) [2022-11-23 15:25:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3105 transitions. [2022-11-23 15:25:28,756 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3105 transitions. Word has length 963 [2022-11-23 15:25:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:28,758 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 3105 transitions. [2022-11-23 15:25:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-23 15:25:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3105 transitions. [2022-11-23 15:25:28,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2022-11-23 15:25:28,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:28,773 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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] [2022-11-23 15:25:28,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:25:28,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:25:28,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:28,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1845924495, now seen corresponding path program 1 times [2022-11-23 15:25:28,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:25:28,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317598921] [2022-11-23 15:25:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:28,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:25:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2022-11-23 15:25:30,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:25:30,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317598921] [2022-11-23 15:25:30,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317598921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:30,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:30,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:25:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368891563] [2022-11-23 15:25:30,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:30,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:25:30,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:25:30,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:25:30,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:25:30,786 INFO L87 Difference]: Start difference. First operand 2075 states and 3105 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-23 15:25:32,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:33,489 INFO L93 Difference]: Finished difference Result 5723 states and 8557 transitions. [2022-11-23 15:25:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:25:33,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 968 [2022-11-23 15:25:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:33,518 INFO L225 Difference]: With dead ends: 5723 [2022-11-23 15:25:33,518 INFO L226 Difference]: Without dead ends: 3864 [2022-11-23 15:25:33,529 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 15:25:33,533 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 711 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:33,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2120 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 15:25:33,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2022-11-23 15:25:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3845. [2022-11-23 15:25:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 2774 states have (on average 1.451694304253785) internal successors, (4027), 2794 states have internal predecessors, (4027), 864 states have call successors, (864), 207 states have call predecessors, (864), 206 states have return successors, (858), 855 states have call predecessors, (858), 858 states have call successors, (858) [2022-11-23 15:25:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5749 transitions. [2022-11-23 15:25:33,788 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5749 transitions. Word has length 968 [2022-11-23 15:25:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:33,789 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 5749 transitions. [2022-11-23 15:25:33,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-23 15:25:33,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5749 transitions. [2022-11-23 15:25:33,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2022-11-23 15:25:33,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:33,803 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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] [2022-11-23 15:25:33,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:25:33,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:25:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1363087098, now seen corresponding path program 1 times [2022-11-23 15:25:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:25:33,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255522000] [2022-11-23 15:25:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:33,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:25:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2022-11-23 15:25:35,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:25:35,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255522000] [2022-11-23 15:25:35,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255522000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:35,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:35,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:25:35,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438043584] [2022-11-23 15:25:35,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:35,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:25:35,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:25:35,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:25:35,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:25:35,627 INFO L87 Difference]: Start difference. First operand 3845 states and 5749 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-23 15:25:37,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:38,481 INFO L93 Difference]: Finished difference Result 11000 states and 16432 transitions. [2022-11-23 15:25:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:25:38,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 965 [2022-11-23 15:25:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:38,530 INFO L225 Difference]: With dead ends: 11000 [2022-11-23 15:25:38,531 INFO L226 Difference]: Without dead ends: 7371 [2022-11-23 15:25:38,546 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 15:25:38,549 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 726 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:38,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 2139 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 15:25:38,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7371 states. [2022-11-23 15:25:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7371 to 7353. [2022-11-23 15:25:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7353 states, 5346 states have (on average 1.457351290684624) internal successors, (7791), 5382 states have internal predecessors, (7791), 1596 states have call successors, (1596), 411 states have call predecessors, (1596), 410 states have return successors, (1590), 1583 states have call predecessors, (1590), 1590 states have call successors, (1590) [2022-11-23 15:25:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7353 states to 7353 states and 10977 transitions. [2022-11-23 15:25:39,070 INFO L78 Accepts]: Start accepts. Automaton has 7353 states and 10977 transitions. Word has length 965 [2022-11-23 15:25:39,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:39,072 INFO L495 AbstractCegarLoop]: Abstraction has 7353 states and 10977 transitions. [2022-11-23 15:25:39,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-23 15:25:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 7353 states and 10977 transitions. [2022-11-23 15:25:39,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2022-11-23 15:25:39,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:39,086 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:25:39,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:25:39,086 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:25:39,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:39,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1462609388, now seen corresponding path program 1 times [2022-11-23 15:25:39,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:25:39,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315264796] [2022-11-23 15:25:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:39,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:25:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 17887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17887 trivial. 0 not checked. [2022-11-23 15:25:40,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:25:40,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315264796] [2022-11-23 15:25:40,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315264796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:40,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:40,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:25:40,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444142176] [2022-11-23 15:25:40,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:40,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:25:40,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:25:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:25:40,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:25:40,799 INFO L87 Difference]: Start difference. First operand 7353 states and 10977 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-23 15:25:42,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:43,395 INFO L93 Difference]: Finished difference Result 7355 states and 10978 transitions. [2022-11-23 15:25:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:25:43,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 968 [2022-11-23 15:25:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:43,440 INFO L225 Difference]: With dead ends: 7355 [2022-11-23 15:25:43,440 INFO L226 Difference]: Without dead ends: 7352 [2022-11-23 15:25:43,444 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 15:25:43,446 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 847 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:43,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 990 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 15:25:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2022-11-23 15:25:43,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7352. [2022-11-23 15:25:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 5346 states have (on average 1.4571642349420126) internal successors, (7790), 5381 states have internal predecessors, (7790), 1595 states have call successors, (1595), 411 states have call predecessors, (1595), 410 states have return successors, (1590), 1583 states have call predecessors, (1590), 1590 states have call successors, (1590) [2022-11-23 15:25:43,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10975 transitions. [2022-11-23 15:25:43,863 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10975 transitions. Word has length 968 [2022-11-23 15:25:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:43,865 INFO L495 AbstractCegarLoop]: Abstraction has 7352 states and 10975 transitions. [2022-11-23 15:25:43,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-23 15:25:43,865 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10975 transitions. [2022-11-23 15:25:43,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2022-11-23 15:25:43,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:43,876 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:25:43,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:25:43,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:25:43,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:43,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1904115649, now seen corresponding path program 1 times [2022-11-23 15:25:43,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:25:43,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334418300] [2022-11-23 15:25:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:43,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:25:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 17887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17887 trivial. 0 not checked. [2022-11-23 15:25:45,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:25:45,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334418300] [2022-11-23 15:25:45,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334418300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:45,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:45,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:25:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765026907] [2022-11-23 15:25:45,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:45,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:25:45,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:25:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:25:45,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:25:45,634 INFO L87 Difference]: Start difference. First operand 7352 states and 10975 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-23 15:25:47,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:48,183 INFO L93 Difference]: Finished difference Result 7354 states and 10976 transitions. [2022-11-23 15:25:48,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:25:48,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 969 [2022-11-23 15:25:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:48,247 INFO L225 Difference]: With dead ends: 7354 [2022-11-23 15:25:48,247 INFO L226 Difference]: Without dead ends: 7351 [2022-11-23 15:25:48,252 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 15:25:48,254 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 844 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:48,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 988 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 15:25:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2022-11-23 15:25:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 7351. [2022-11-23 15:25:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 5346 states have (on average 1.4569771791994015) internal successors, (7789), 5380 states have internal predecessors, (7789), 1594 states have call successors, (1594), 411 states have call predecessors, (1594), 410 states have return successors, (1590), 1583 states have call predecessors, (1590), 1590 states have call successors, (1590) [2022-11-23 15:25:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 10973 transitions. [2022-11-23 15:25:48,813 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 10973 transitions. Word has length 969 [2022-11-23 15:25:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:48,815 INFO L495 AbstractCegarLoop]: Abstraction has 7351 states and 10973 transitions. [2022-11-23 15:25:48,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-23 15:25:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 10973 transitions. [2022-11-23 15:25:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2022-11-23 15:25:48,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:48,837 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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] [2022-11-23 15:25:48,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:25:48,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:25:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash -515858679, now seen corresponding path program 1 times [2022-11-23 15:25:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:25:48,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053772542] [2022-11-23 15:25:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:25:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2022-11-23 15:25:50,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:25:50,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053772542] [2022-11-23 15:25:50,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053772542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:50,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:50,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:25:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545364818] [2022-11-23 15:25:50,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:50,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:25:50,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:25:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:25:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:25:50,327 INFO L87 Difference]: Start difference. First operand 7351 states and 10973 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-23 15:25:52,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:53,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:53,471 INFO L93 Difference]: Finished difference Result 20981 states and 31239 transitions. [2022-11-23 15:25:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:25:53,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 971 [2022-11-23 15:25:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:53,532 INFO L225 Difference]: With dead ends: 20981 [2022-11-23 15:25:53,532 INFO L226 Difference]: Without dead ends: 13846 [2022-11-23 15:25:53,556 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 15:25:53,557 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 657 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:53,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 2127 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 15:25:53,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13846 states. [2022-11-23 15:25:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13846 to 13823. [2022-11-23 15:25:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13823 states, 10178 states have (on average 1.4640400864609944) internal successors, (14901), 10244 states have internal predecessors, (14901), 2826 states have call successors, (2826), 819 states have call predecessors, (2826), 818 states have return successors, (2822), 2807 states have call predecessors, (2822), 2822 states have call successors, (2822) [2022-11-23 15:25:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13823 states to 13823 states and 20549 transitions. [2022-11-23 15:25:54,309 INFO L78 Accepts]: Start accepts. Automaton has 13823 states and 20549 transitions. Word has length 971 [2022-11-23 15:25:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:54,311 INFO L495 AbstractCegarLoop]: Abstraction has 13823 states and 20549 transitions. [2022-11-23 15:25:54,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-23 15:25:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 13823 states and 20549 transitions. [2022-11-23 15:25:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2022-11-23 15:25:54,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:54,323 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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 15:25:54,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:25:54,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:25:54,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash -197464103, now seen corresponding path program 1 times [2022-11-23 15:25:54,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:25:54,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884162960] [2022-11-23 15:25:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:25:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2022-11-23 15:25:55,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:25:55,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884162960] [2022-11-23 15:25:55,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884162960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:55,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:55,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:25:55,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608372532] [2022-11-23 15:25:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:55,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:25:55,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:25:55,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:25:55,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:25:55,668 INFO L87 Difference]: Start difference. First operand 13823 states and 20549 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-23 15:25:57,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:59,019 INFO L93 Difference]: Finished difference Result 40765 states and 60591 transitions. [2022-11-23 15:25:59,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:25:59,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 972 [2022-11-23 15:25:59,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:59,148 INFO L225 Difference]: With dead ends: 40765 [2022-11-23 15:25:59,148 INFO L226 Difference]: Without dead ends: 27158 [2022-11-23 15:25:59,193 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 15:25:59,194 INFO L413 NwaCegarLoop]: 1199 mSDtfsCounter, 704 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:59,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 2182 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 15:25:59,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27158 states. [2022-11-23 15:26:00,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27158 to 27135. [2022-11-23 15:26:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27135 states, 20034 states have (on average 1.466556853349306) internal successors, (29381), 20164 states have internal predecessors, (29381), 5466 states have call successors, (5466), 1635 states have call predecessors, (5466), 1634 states have return successors, (5462), 5431 states have call predecessors, (5462), 5462 states have call successors, (5462) [2022-11-23 15:26:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27135 states to 27135 states and 40309 transitions. [2022-11-23 15:26:00,897 INFO L78 Accepts]: Start accepts. Automaton has 27135 states and 40309 transitions. Word has length 972 [2022-11-23 15:26:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:26:00,899 INFO L495 AbstractCegarLoop]: Abstraction has 27135 states and 40309 transitions. [2022-11-23 15:26:00,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-23 15:26:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 27135 states and 40309 transitions. [2022-11-23 15:26:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2022-11-23 15:26:00,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:26:00,911 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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] [2022-11-23 15:26:00,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:26:00,911 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:26:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:26:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash 768303229, now seen corresponding path program 1 times [2022-11-23 15:26:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:26:00,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448827913] [2022-11-23 15:26:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:26:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:26:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:26:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 17847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17847 trivial. 0 not checked. [2022-11-23 15:26:02,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:26:02,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448827913] [2022-11-23 15:26:02,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448827913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:26:02,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:26:02,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:26:02,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174816127] [2022-11-23 15:26:02,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:26:02,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:26:02,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:26:02,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:26:02,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:26:02,456 INFO L87 Difference]: Start difference. First operand 27135 states and 40309 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-23 15:26:03,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:26:05,831 INFO L93 Difference]: Finished difference Result 80460 states and 119449 transitions. [2022-11-23 15:26:05,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:26:05,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 975 [2022-11-23 15:26:05,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:26:06,095 INFO L225 Difference]: With dead ends: 80460 [2022-11-23 15:26:06,095 INFO L226 Difference]: Without dead ends: 53541 [2022-11-23 15:26:06,176 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 15:26:06,176 INFO L413 NwaCegarLoop]: 1204 mSDtfsCounter, 1060 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:26:06,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1869 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 15:26:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53541 states. [2022-11-23 15:26:09,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53541 to 53525. [2022-11-23 15:26:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53525 states, 39501 states have (on average 1.465076833497886) internal successors, (57872), 39759 states have internal predecessors, (57872), 10757 states have call successors, (10757), 3267 states have call predecessors, (10757), 3266 states have return successors, (10753), 10690 states have call predecessors, (10753), 10753 states have call successors, (10753) [2022-11-23 15:26:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53525 states to 53525 states and 79382 transitions. [2022-11-23 15:26:09,693 INFO L78 Accepts]: Start accepts. Automaton has 53525 states and 79382 transitions. Word has length 975 [2022-11-23 15:26:09,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:26:09,695 INFO L495 AbstractCegarLoop]: Abstraction has 53525 states and 79382 transitions. [2022-11-23 15:26:09,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-23 15:26:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 53525 states and 79382 transitions. [2022-11-23 15:26:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2022-11-23 15:26:09,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:26:09,708 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:09,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:26:09,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:26:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:26:09,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1101595471, now seen corresponding path program 1 times [2022-11-23 15:26:09,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:26:09,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397159257] [2022-11-23 15:26:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:26:09,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:26:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:26:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 17887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17887 trivial. 0 not checked. [2022-11-23 15:26:11,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:26:11,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397159257] [2022-11-23 15:26:11,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397159257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:26:11,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:26:11,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:26:11,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144699598] [2022-11-23 15:26:11,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:26:11,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:26:11,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:26:11,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:26:11,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:26:11,227 INFO L87 Difference]: Start difference. First operand 53525 states and 79382 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-23 15:26:13,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:26:15,685 INFO L93 Difference]: Finished difference Result 53527 states and 79383 transitions. [2022-11-23 15:26:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:26:15,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 970 [2022-11-23 15:26:15,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:26:16,123 INFO L225 Difference]: With dead ends: 53527 [2022-11-23 15:26:16,124 INFO L226 Difference]: Without dead ends: 53524 [2022-11-23 15:26:16,143 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 15:26:16,147 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 841 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:26:16,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 986 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 15:26:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53524 states. [2022-11-23 15:26:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53524 to 53524. [2022-11-23 15:26:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53524 states, 39501 states have (on average 1.4650515176830967) internal successors, (57871), 39758 states have internal predecessors, (57871), 10756 states have call successors, (10756), 3267 states have call predecessors, (10756), 3266 states have return successors, (10753), 10690 states have call predecessors, (10753), 10753 states have call successors, (10753) [2022-11-23 15:26:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53524 states to 53524 states and 79380 transitions. [2022-11-23 15:26:19,423 INFO L78 Accepts]: Start accepts. Automaton has 53524 states and 79380 transitions. Word has length 970 [2022-11-23 15:26:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:26:19,425 INFO L495 AbstractCegarLoop]: Abstraction has 53524 states and 79380 transitions. [2022-11-23 15:26:19,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-23 15:26:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 53524 states and 79380 transitions. [2022-11-23 15:26:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2022-11-23 15:26:19,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:26:19,439 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 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] [2022-11-23 15:26:19,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:26:19,440 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:26:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:26:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1522517027, now seen corresponding path program 1 times [2022-11-23 15:26:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:26:19,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419643839] [2022-11-23 15:26:19,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:26:19,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:26:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:26:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 17847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17847 trivial. 0 not checked. [2022-11-23 15:26:21,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:26:21,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419643839] [2022-11-23 15:26:21,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419643839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:26:21,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:26:21,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:26:21,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232725798] [2022-11-23 15:26:21,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:26:21,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:26:21,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:26:21,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:26:21,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:26:21,422 INFO L87 Difference]: Start difference. First operand 53524 states and 79380 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-23 15:26:23,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:26:28,543 INFO L93 Difference]: Finished difference Result 159115 states and 235830 transitions. [2022-11-23 15:26:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:26:28,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 976 [2022-11-23 15:26:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:26:28,999 INFO L225 Difference]: With dead ends: 159115 [2022-11-23 15:26:28,999 INFO L226 Difference]: Without dead ends: 105807 [2022-11-23 15:26:29,172 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 15:26:29,172 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 737 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:26:29,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 2208 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 15:26:29,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105807 states. [2022-11-23 15:26:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105807 to 105792. [2022-11-23 15:26:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105792 states, 77987 states have (on average 1.4628720171310603) internal successors, (114085), 78500 states have internal predecessors, (114085), 21274 states have call successors, (21274), 6531 states have call predecessors, (21274), 6530 states have return successors, (21271), 21144 states have call predecessors, (21271), 21271 states have call successors, (21271) [2022-11-23 15:26:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105792 states to 105792 states and 156630 transitions. [2022-11-23 15:26:35,277 INFO L78 Accepts]: Start accepts. Automaton has 105792 states and 156630 transitions. Word has length 976 [2022-11-23 15:26:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:26:35,281 INFO L495 AbstractCegarLoop]: Abstraction has 105792 states and 156630 transitions. [2022-11-23 15:26:35,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-23 15:26:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 105792 states and 156630 transitions. [2022-11-23 15:26:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2022-11-23 15:26:35,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:26:35,317 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:35,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:26:35,329 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:26:35,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:26:35,329 INFO L85 PathProgramCache]: Analyzing trace with hash -210635454, now seen corresponding path program 1 times [2022-11-23 15:26:35,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:26:35,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592704865] [2022-11-23 15:26:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:26:35,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:26:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:26:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17887 trivial. 0 not checked. [2022-11-23 15:26:36,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:26:36,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592704865] [2022-11-23 15:26:36,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592704865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:26:36,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:26:36,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:26:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499398815] [2022-11-23 15:26:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:26:36,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:26:36,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:26:36,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:26:36,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:26:36,701 INFO L87 Difference]: Start difference. First operand 105792 states and 156630 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-23 15:26:38,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []