./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:56:07,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:56:07,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:56:07,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:56:07,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:56:07,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:56:07,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:56:07,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:56:07,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:56:07,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:56:07,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:56:07,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:56:07,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:56:07,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:56:07,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:56:07,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:56:07,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:56:07,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:56:07,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:56:07,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:56:07,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:56:07,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:56:07,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:56:07,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:56:07,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:56:07,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:56:07,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:56:07,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:56:07,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:56:07,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:56:07,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:56:07,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:56:07,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:56:07,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:56:07,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:56:07,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:56:07,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:56:07,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:56:07,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:56:07,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:56:07,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:56:07,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:56:08,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:56:08,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:56:08,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:56:08,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:56:08,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:56:08,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:56:08,024 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:56:08,025 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:56:08,025 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:56:08,025 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:56:08,026 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:56:08,026 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:56:08,026 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:56:08,026 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:56:08,027 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:56:08,027 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:56:08,027 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:56:08,027 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:56:08,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:56:08,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:56:08,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:56:08,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:56:08,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:56:08,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:56:08,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:56:08,030 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:56:08,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:56:08,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:56:08,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:56:08,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:56:08,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:56:08,032 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:56:08,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:56:08,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:56:08,033 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:56:08,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:56:08,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:56:08,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:56:08,034 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_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 [2022-11-03 01:56:08,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:56:08,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:56:08,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:56:08,360 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:56:08,361 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:56:08,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 01:56:08,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/data/08d8c5a70/40ac36ad0a624ecc91acf26386779f96/FLAG735b98a07 [2022-11-03 01:56:09,479 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:56:09,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 01:56:09,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/data/08d8c5a70/40ac36ad0a624ecc91acf26386779f96/FLAG735b98a07 [2022-11-03 01:56:09,864 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/data/08d8c5a70/40ac36ad0a624ecc91acf26386779f96 [2022-11-03 01:56:09,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:56:09,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:56:09,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:56:09,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:56:09,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:56:09,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:56:09" (1/1) ... [2022-11-03 01:56:09,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c1bae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:09, skipping insertion in model container [2022-11-03 01:56:09,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:56:09" (1/1) ... [2022-11-03 01:56:09,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:56:10,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:56:12,016 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2022-11-03 01:56:12,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:56:12,084 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:56:12,511 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2022-11-03 01:56:12,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:56:12,664 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:56:12,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12 WrapperNode [2022-11-03 01:56:12,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:56:12,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:56:12,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:56:12,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:56:12,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:12,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:13,104 INFO L138 Inliner]: procedures = 261, calls = 1811, calls flagged for inlining = 104, calls inlined = 100, statements flattened = 4510 [2022-11-03 01:56:13,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:56:13,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:56:13,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:56:13,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:56:13,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:13,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:13,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:13,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:13,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:13,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:13,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:13,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:13,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:56:13,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:56:13,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:56:13,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:56:13,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (1/1) ... [2022-11-03 01:56:13,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:56:13,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:13,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:56:13,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:56:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 01:56:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 01:56:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2022-11-03 01:56:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2022-11-03 01:56:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:56:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:56:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:56:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:56:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:56:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:56:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_delete [2022-11-03 01:56:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_delete [2022-11-03 01:56:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2022-11-03 01:56:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2022-11-03 01:56:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2022-11-03 01:56:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2022-11-03 01:56:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-03 01:56:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-03 01:56:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-11-03 01:56:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-11-03 01:56:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:56:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:56:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-03 01:56:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-03 01:56:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 01:56:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 01:56:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2022-11-03 01:56:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2022-11-03 01:56:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_50 [2022-11-03 01:56:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_50 [2022-11-03 01:56:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:56:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:56:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:56:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:56:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:56:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:56:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:56:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:56:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_detect_change [2022-11-03 01:56:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_detect_change [2022-11-03 01:56:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 01:56:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 01:56:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_cancel [2022-11-03 01:56:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_cancel [2022-11-03 01:56:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 01:56:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 01:56:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2022-11-03 01:56:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2022-11-03 01:56:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2022-11-03 01:56:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2022-11-03 01:56:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2022-11-03 01:56:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2022-11-03 01:56:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:56:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2022-11-03 01:56:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2022-11-03 01:56:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:56:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:56:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-03 01:56:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-03 01:56:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:56:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2022-11-03 01:56:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2022-11-03 01:56:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 01:56:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 01:56:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2022-11-03 01:56:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2022-11-03 01:56:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_disconnect [2022-11-03 01:56:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_disconnect [2022-11-03 01:56:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2022-11-03 01:56:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2022-11-03 01:56:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2022-11-03 01:56:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2022-11-03 01:56:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:56:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:56:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 01:56:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 01:56:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:56:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:56:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2022-11-03 01:56:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2022-11-03 01:56:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 01:56:13,644 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 01:56:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 01:56:13,644 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 01:56:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure add_offloaded_reg [2022-11-03 01:56:13,644 INFO L138 BoogieDeclarations]: Found implementation of procedure add_offloaded_reg [2022-11-03 01:56:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-03 01:56:13,644 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-03 01:56:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2022-11-03 01:56:13,645 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2022-11-03 01:56:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_to_multiple_of_64 [2022-11-03 01:56:13,645 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_to_multiple_of_64 [2022-11-03 01:56:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 01:56:13,645 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 01:56:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 01:56:13,645 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 01:56:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:56:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2022-11-03 01:56:13,646 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2022-11-03 01:56:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:56:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2022-11-03 01:56:13,646 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2022-11-03 01:56:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2022-11-03 01:56:13,646 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2022-11-03 01:56:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 01:56:13,646 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 01:56:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:56:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-03 01:56:13,647 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-03 01:56:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:56:13,647 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:56:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 01:56:13,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 01:56:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2022-11-03 01:56:13,647 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2022-11-03 01:56:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 01:56:13,648 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 01:56:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:56:13,648 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:56:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-03 01:56:13,648 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-03 01:56:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:56:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_response_error [2022-11-03 01:56:13,648 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_response_error [2022-11-03 01:56:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2022-11-03 01:56:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2022-11-03 01:56:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2022-11-03 01:56:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2022-11-03 01:56:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:56:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:56:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2022-11-03 01:56:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2022-11-03 01:56:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:56:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:56:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:56:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_queue_poll_work [2022-11-03 01:56:13,650 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_queue_poll_work [2022-11-03 01:56:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2022-11-03 01:56:13,650 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2022-11-03 01:56:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:56:13,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:56:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-03 01:56:13,650 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-03 01:56:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2022-11-03 01:56:13,651 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2022-11-03 01:56:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:56:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_to_buffer [2022-11-03 01:56:13,651 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_to_buffer [2022-11-03 01:56:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_9 [2022-11-03 01:56:13,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_9 [2022-11-03 01:56:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 01:56:13,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 01:56:13,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:56:13,652 INFO L130 BoogieDeclarations]: Found specification of procedure __download_offload_pseudocode [2022-11-03 01:56:13,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __download_offload_pseudocode [2022-11-03 01:56:13,652 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:56:13,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:56:13,652 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2022-11-03 01:56:13,652 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2022-11-03 01:56:13,652 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2022-11-03 01:56:13,653 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2022-11-03 01:56:13,653 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_InterfaceNumber [2022-11-03 01:56:13,653 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_InterfaceNumber [2022-11-03 01:56:13,653 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 01:56:13,653 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 01:56:13,653 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 01:56:13,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 01:56:13,653 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 01:56:13,653 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 01:56:13,654 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2022-11-03 01:56:13,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2022-11-03 01:56:13,654 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2022-11-03 01:56:13,654 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2022-11-03 01:56:13,654 INFO L130 BoogieDeclarations]: Found specification of procedure new_system_port_status [2022-11-03 01:56:13,654 INFO L138 BoogieDeclarations]: Found implementation of procedure new_system_port_status [2022-11-03 01:56:13,654 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2022-11-03 01:56:13,654 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2022-11-03 01:56:13,655 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 01:56:13,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 01:56:13,655 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 01:56:13,655 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 01:56:13,655 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2022-11-03 01:56:13,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2022-11-03 01:56:13,655 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2022-11-03 01:56:13,655 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2022-11-03 01:56:13,655 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-03 01:56:13,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-03 01:56:13,656 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-03 01:56:13,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_47 [2022-11-03 01:56:13,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_47 [2022-11-03 01:56:13,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-03 01:56:13,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-03 01:56:13,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:56:13,656 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2022-11-03 01:56:13,656 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2022-11-03 01:56:13,656 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2022-11-03 01:56:13,656 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2022-11-03 01:56:13,656 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 01:56:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 01:56:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_deadwork_thread [2022-11-03 01:56:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_deadwork_thread [2022-11-03 01:56:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure check_vub300_port_status [2022-11-03 01:56:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure check_vub300_port_status [2022-11-03 01:56:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 01:56:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:56:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:56:14,501 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:56:14,505 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:56:16,528 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:56:21,517 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:56:24,510 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:56:24,510 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:56:24,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:56:24 BoogieIcfgContainer [2022-11-03 01:56:24,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:56:24,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:56:24,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:56:24,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:56:24,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:56:09" (1/3) ... [2022-11-03 01:56:24,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d27c50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:56:24, skipping insertion in model container [2022-11-03 01:56:24,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:12" (2/3) ... [2022-11-03 01:56:24,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d27c50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:56:24, skipping insertion in model container [2022-11-03 01:56:24,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:56:24" (3/3) ... [2022-11-03 01:56:24,526 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 01:56:24,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:56:24,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:56:24,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:56:24,635 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;@75145d69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:56:24,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:56:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 1222 states, 745 states have (on average 1.3919463087248323) internal successors, (1037), 811 states have internal predecessors, (1037), 382 states have call successors, (382), 94 states have call predecessors, (382), 93 states have return successors, (373), 347 states have call predecessors, (373), 373 states have call successors, (373) [2022-11-03 01:56:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 01:56:24,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:24,666 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:24,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:24,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:24,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1088779695, now seen corresponding path program 1 times [2022-11-03 01:56:24,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:24,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733138898] [2022-11-03 01:56:24,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:24,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:56:25,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:25,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733138898] [2022-11-03 01:56:25,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733138898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:25,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:25,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:25,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21306545] [2022-11-03 01:56:25,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:25,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:25,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:25,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:25,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:25,495 INFO L87 Difference]: Start difference. First operand has 1222 states, 745 states have (on average 1.3919463087248323) internal successors, (1037), 811 states have internal predecessors, (1037), 382 states have call successors, (382), 94 states have call predecessors, (382), 93 states have return successors, (373), 347 states have call predecessors, (373), 373 states have call successors, (373) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:56:27,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:32,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:32,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:32,626 INFO L93 Difference]: Finished difference Result 2267 states and 3359 transitions. [2022-11-03 01:56:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:32,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2022-11-03 01:56:32,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:32,666 INFO L225 Difference]: With dead ends: 2267 [2022-11-03 01:56:32,666 INFO L226 Difference]: Without dead ends: 2233 [2022-11-03 01:56:32,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:32,675 INFO L413 NwaCegarLoop]: 2034 mSDtfsCounter, 1517 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:32,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 3652 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-03 01:56:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2022-11-03 01:56:32,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2223. [2022-11-03 01:56:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1375 states have (on average 1.3905454545454545) internal successors, (1912), 1483 states have internal predecessors, (1912), 675 states have call successors, (675), 174 states have call predecessors, (675), 172 states have return successors, (696), 615 states have call predecessors, (696), 671 states have call successors, (696) [2022-11-03 01:56:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3283 transitions. [2022-11-03 01:56:32,909 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3283 transitions. Word has length 88 [2022-11-03 01:56:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:32,910 INFO L495 AbstractCegarLoop]: Abstraction has 2223 states and 3283 transitions. [2022-11-03 01:56:32,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:56:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3283 transitions. [2022-11-03 01:56:32,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 01:56:32,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:32,923 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:32,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:56:32,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:32,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:32,925 INFO L85 PathProgramCache]: Analyzing trace with hash -608113645, now seen corresponding path program 1 times [2022-11-03 01:56:32,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:32,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638202978] [2022-11-03 01:56:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:32,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:56:33,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:33,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638202978] [2022-11-03 01:56:33,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638202978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:33,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:33,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:33,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734617486] [2022-11-03 01:56:33,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:33,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:33,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:33,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:33,224 INFO L87 Difference]: Start difference. First operand 2223 states and 3283 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:56:35,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:40,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:40,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:40,689 INFO L93 Difference]: Finished difference Result 3295 states and 4905 transitions. [2022-11-03 01:56:40,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:40,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2022-11-03 01:56:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:40,717 INFO L225 Difference]: With dead ends: 3295 [2022-11-03 01:56:40,717 INFO L226 Difference]: Without dead ends: 3292 [2022-11-03 01:56:40,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:40,724 INFO L413 NwaCegarLoop]: 2023 mSDtfsCounter, 1543 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:40,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 3625 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 01:56:40,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2022-11-03 01:56:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3286. [2022-11-03 01:56:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 2038 states have (on average 1.392541707556428) internal successors, (2838), 2195 states have internal predecessors, (2838), 990 states have call successors, (990), 259 states have call predecessors, (990), 257 states have return successors, (1068), 905 states have call predecessors, (1068), 986 states have call successors, (1068) [2022-11-03 01:56:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 4896 transitions. [2022-11-03 01:56:40,925 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 4896 transitions. Word has length 89 [2022-11-03 01:56:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:40,927 INFO L495 AbstractCegarLoop]: Abstraction has 3286 states and 4896 transitions. [2022-11-03 01:56:40,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:56:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 4896 transitions. [2022-11-03 01:56:40,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 01:56:40,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:40,933 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:40,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:56:40,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:40,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1672194766, now seen corresponding path program 1 times [2022-11-03 01:56:40,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:40,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388428131] [2022-11-03 01:56:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:40,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:56:41,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:41,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388428131] [2022-11-03 01:56:41,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388428131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:41,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:41,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:41,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671839142] [2022-11-03 01:56:41,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:41,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:41,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:41,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:41,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:41,305 INFO L87 Difference]: Start difference. First operand 3286 states and 4896 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:56:43,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:45,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:48,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:49,218 INFO L93 Difference]: Finished difference Result 4379 states and 6498 transitions. [2022-11-03 01:56:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:49,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2022-11-03 01:56:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:49,251 INFO L225 Difference]: With dead ends: 4379 [2022-11-03 01:56:49,252 INFO L226 Difference]: Without dead ends: 4376 [2022-11-03 01:56:49,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:49,260 INFO L413 NwaCegarLoop]: 2022 mSDtfsCounter, 1588 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:49,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 3597 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 01:56:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2022-11-03 01:56:49,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4369. [2022-11-03 01:56:49,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4369 states, 2713 states have (on average 1.3929229635090306) internal successors, (3779), 2919 states have internal predecessors, (3779), 1315 states have call successors, (1315), 342 states have call predecessors, (1315), 340 states have return successors, (1394), 1205 states have call predecessors, (1394), 1311 states have call successors, (1394) [2022-11-03 01:56:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6488 transitions. [2022-11-03 01:56:49,490 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6488 transitions. Word has length 90 [2022-11-03 01:56:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:49,491 INFO L495 AbstractCegarLoop]: Abstraction has 4369 states and 6488 transitions. [2022-11-03 01:56:49,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:56:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6488 transitions. [2022-11-03 01:56:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 01:56:49,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:49,494 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:49,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:56:49,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:49,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:49,495 INFO L85 PathProgramCache]: Analyzing trace with hash -298966282, now seen corresponding path program 1 times [2022-11-03 01:56:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:49,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353227119] [2022-11-03 01:56:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:49,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:56:49,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:49,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353227119] [2022-11-03 01:56:49,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353227119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:49,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:49,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:49,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555972445] [2022-11-03 01:56:49,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:49,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:49,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:49,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:49,742 INFO L87 Difference]: Start difference. First operand 4369 states and 6488 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:56:52,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:56:56,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:56:57,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:57,151 INFO L93 Difference]: Finished difference Result 4380 states and 6498 transitions. [2022-11-03 01:56:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:57,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2022-11-03 01:56:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:57,182 INFO L225 Difference]: With dead ends: 4380 [2022-11-03 01:56:57,183 INFO L226 Difference]: Without dead ends: 4352 [2022-11-03 01:56:57,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:57,197 INFO L413 NwaCegarLoop]: 2023 mSDtfsCounter, 1585 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:57,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 3601 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 337 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2022-11-03 01:56:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2022-11-03 01:56:57,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 4345. [2022-11-03 01:56:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 2702 states have (on average 1.3930421909696522) internal successors, (3764), 2908 states have internal predecessors, (3764), 1303 states have call successors, (1303), 341 states have call predecessors, (1303), 339 states have return successors, (1382), 1193 states have call predecessors, (1382), 1299 states have call successors, (1382) [2022-11-03 01:56:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 6449 transitions. [2022-11-03 01:56:57,465 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 6449 transitions. Word has length 91 [2022-11-03 01:56:57,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:57,465 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 6449 transitions. [2022-11-03 01:56:57,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:56:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 6449 transitions. [2022-11-03 01:56:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 01:56:57,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:57,479 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:57,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:56:57,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1983542724, now seen corresponding path program 1 times [2022-11-03 01:56:57,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:56:57,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191101345] [2022-11-03 01:56:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:57,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:56:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 01:56:57,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:56:57,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191101345] [2022-11-03 01:56:57,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191101345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:57,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:57,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:57,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475428245] [2022-11-03 01:56:57,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:57,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:57,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:56:57,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:57,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:57,764 INFO L87 Difference]: Start difference. First operand 4345 states and 6449 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:57:00,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:57:01,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:05,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:06,509 INFO L93 Difference]: Finished difference Result 12643 states and 18758 transitions. [2022-11-03 01:57:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:57:06,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2022-11-03 01:57:06,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:06,568 INFO L225 Difference]: With dead ends: 12643 [2022-11-03 01:57:06,569 INFO L226 Difference]: Without dead ends: 8315 [2022-11-03 01:57:06,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:06,601 INFO L413 NwaCegarLoop]: 2070 mSDtfsCounter, 1523 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:06,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 3606 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 01:57:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8315 states. [2022-11-03 01:57:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8315 to 8296. [2022-11-03 01:57:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8296 states, 5175 states have (on average 1.3955555555555557) internal successors, (7222), 5580 states have internal predecessors, (7222), 2460 states have call successors, (2460), 663 states have call predecessors, (2460), 660 states have return successors, (2623), 2246 states have call predecessors, (2623), 2456 states have call successors, (2623) [2022-11-03 01:57:07,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8296 states to 8296 states and 12305 transitions. [2022-11-03 01:57:07,257 INFO L78 Accepts]: Start accepts. Automaton has 8296 states and 12305 transitions. Word has length 129 [2022-11-03 01:57:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:07,258 INFO L495 AbstractCegarLoop]: Abstraction has 8296 states and 12305 transitions. [2022-11-03 01:57:07,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:57:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 8296 states and 12305 transitions. [2022-11-03 01:57:07,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-03 01:57:07,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:07,279 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:07,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:57:07,280 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:07,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:07,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2001016119, now seen corresponding path program 1 times [2022-11-03 01:57:07,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:07,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519889189] [2022-11-03 01:57:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:07,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-03 01:57:07,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:07,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519889189] [2022-11-03 01:57:07,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519889189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:07,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:07,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:57:07,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22642514] [2022-11-03 01:57:07,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:07,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:57:07,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:07,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:57:07,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:57:07,712 INFO L87 Difference]: Start difference. First operand 8296 states and 12305 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 01:57:10,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:57:15,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:17,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:17,117 INFO L93 Difference]: Finished difference Result 20414 states and 30605 transitions. [2022-11-03 01:57:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:57:17,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-11-03 01:57:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:17,195 INFO L225 Difference]: With dead ends: 20414 [2022-11-03 01:57:17,195 INFO L226 Difference]: Without dead ends: 12135 [2022-11-03 01:57:17,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:57:17,243 INFO L413 NwaCegarLoop]: 2326 mSDtfsCounter, 2025 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 103 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:17,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2026 Valid, 6016 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 629 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2022-11-03 01:57:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12135 states. [2022-11-03 01:57:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12135 to 10365. [2022-11-03 01:57:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10365 states, 6468 states have (on average 1.395021645021645) internal successors, (9023), 6974 states have internal predecessors, (9023), 3074 states have call successors, (3074), 825 states have call predecessors, (3074), 822 states have return successors, (3239), 2807 states have call predecessors, (3239), 3070 states have call successors, (3239) [2022-11-03 01:57:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10365 states to 10365 states and 15336 transitions. [2022-11-03 01:57:17,998 INFO L78 Accepts]: Start accepts. Automaton has 10365 states and 15336 transitions. Word has length 160 [2022-11-03 01:57:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:18,000 INFO L495 AbstractCegarLoop]: Abstraction has 10365 states and 15336 transitions. [2022-11-03 01:57:18,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 01:57:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 10365 states and 15336 transitions. [2022-11-03 01:57:18,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-03 01:57:18,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:18,022 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:18,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:57:18,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:18,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash 696038142, now seen corresponding path program 1 times [2022-11-03 01:57:18,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:18,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021788865] [2022-11-03 01:57:18,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:18,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-03 01:57:18,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:18,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021788865] [2022-11-03 01:57:18,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021788865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:18,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:18,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:57:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138885348] [2022-11-03 01:57:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:18,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:57:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:18,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:57:18,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:18,445 INFO L87 Difference]: Start difference. First operand 10365 states and 15336 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 01:57:21,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:57:22,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:26,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:28,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:28,155 INFO L93 Difference]: Finished difference Result 28602 states and 42330 transitions. [2022-11-03 01:57:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:57:28,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 172 [2022-11-03 01:57:28,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:28,255 INFO L225 Difference]: With dead ends: 28602 [2022-11-03 01:57:28,256 INFO L226 Difference]: Without dead ends: 18254 [2022-11-03 01:57:28,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:28,319 INFO L413 NwaCegarLoop]: 2836 mSDtfsCounter, 1517 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:28,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 4396 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 01:57:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18254 states. [2022-11-03 01:57:29,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18254 to 18251. [2022-11-03 01:57:29,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 11402 states have (on average 1.3948430099982458) internal successors, (15904), 12294 states have internal predecessors, (15904), 5380 states have call successors, (5380), 1473 states have call predecessors, (5380), 1468 states have return successors, (5713), 4903 states have call predecessors, (5713), 5376 states have call successors, (5713) [2022-11-03 01:57:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 26997 transitions. [2022-11-03 01:57:29,654 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 26997 transitions. Word has length 172 [2022-11-03 01:57:29,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:29,655 INFO L495 AbstractCegarLoop]: Abstraction has 18251 states and 26997 transitions. [2022-11-03 01:57:29,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 01:57:29,655 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 26997 transitions. [2022-11-03 01:57:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-03 01:57:29,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:29,716 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:29,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:57:29,717 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:29,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1139890620, now seen corresponding path program 1 times [2022-11-03 01:57:29,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:29,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670925169] [2022-11-03 01:57:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:29,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:31,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:31,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670925169] [2022-11-03 01:57:31,494 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:57:31,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032921665] [2022-11-03 01:57:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:31,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:31,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:31,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:31,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:57:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:39,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 25904 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:57:39,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 01:57:40,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:57:40,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032921665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:40,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:40,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:57:40,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336837824] [2022-11-03 01:57:40,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:40,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:57:40,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:40,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:57:40,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:40,003 INFO L87 Difference]: Start difference. First operand 18251 states and 26997 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:57:42,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:57:46,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:57:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:47,492 INFO L93 Difference]: Finished difference Result 36460 states and 53922 transitions. [2022-11-03 01:57:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:57:47,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 207 [2022-11-03 01:57:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:47,598 INFO L225 Difference]: With dead ends: 36460 [2022-11-03 01:57:47,598 INFO L226 Difference]: Without dead ends: 18234 [2022-11-03 01:57:47,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:47,696 INFO L413 NwaCegarLoop]: 2018 mSDtfsCounter, 1604 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:47,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 3594 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-11-03 01:57:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18234 states. [2022-11-03 01:57:49,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18234 to 18227. [2022-11-03 01:57:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18227 states, 11390 states have (on average 1.3942054433713784) internal successors, (15880), 12282 states have internal predecessors, (15880), 5368 states have call successors, (5368), 1473 states have call predecessors, (5368), 1468 states have return successors, (5689), 4891 states have call predecessors, (5689), 5364 states have call successors, (5689) [2022-11-03 01:57:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18227 states to 18227 states and 26937 transitions. [2022-11-03 01:57:49,341 INFO L78 Accepts]: Start accepts. Automaton has 18227 states and 26937 transitions. Word has length 207 [2022-11-03 01:57:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:49,341 INFO L495 AbstractCegarLoop]: Abstraction has 18227 states and 26937 transitions. [2022-11-03 01:57:49,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:57:49,342 INFO L276 IsEmpty]: Start isEmpty. Operand 18227 states and 26937 transitions. [2022-11-03 01:57:49,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-03 01:57:49,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:49,388 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:49,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:49,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:49,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1531409471, now seen corresponding path program 1 times [2022-11-03 01:57:49,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:49,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648971935] [2022-11-03 01:57:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:51,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:51,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648971935] [2022-11-03 01:57:51,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:57:51,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117447531] [2022-11-03 01:57:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:51,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:51,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:51,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:51,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:58:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:01,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 25910 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:58:01,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 01:58:01,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:01,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117447531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:01,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:01,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:01,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577478838] [2022-11-03 01:58:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:01,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:01,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:01,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:01,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:01,149 INFO L87 Difference]: Start difference. First operand 18227 states and 26937 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:58:03,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:07,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:09,129 INFO L93 Difference]: Finished difference Result 36412 states and 53802 transitions. [2022-11-03 01:58:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 210 [2022-11-03 01:58:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:09,199 INFO L225 Difference]: With dead ends: 36412 [2022-11-03 01:58:09,199 INFO L226 Difference]: Without dead ends: 18210 [2022-11-03 01:58:09,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:09,260 INFO L413 NwaCegarLoop]: 2017 mSDtfsCounter, 1597 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 3593 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:09,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 3593 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 01:58:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18210 states. [2022-11-03 01:58:10,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18210 to 18203. [2022-11-03 01:58:10,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18203 states, 11378 states have (on average 1.3935665319036739) internal successors, (15856), 12270 states have internal predecessors, (15856), 5356 states have call successors, (5356), 1473 states have call predecessors, (5356), 1468 states have return successors, (5665), 4879 states have call predecessors, (5665), 5352 states have call successors, (5665) [2022-11-03 01:58:10,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18203 states to 18203 states and 26877 transitions. [2022-11-03 01:58:10,454 INFO L78 Accepts]: Start accepts. Automaton has 18203 states and 26877 transitions. Word has length 210 [2022-11-03 01:58:10,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:10,455 INFO L495 AbstractCegarLoop]: Abstraction has 18203 states and 26877 transitions. [2022-11-03 01:58:10,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:58:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 18203 states and 26877 transitions. [2022-11-03 01:58:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-03 01:58:10,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:10,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:10,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:10,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:10,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:10,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:10,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1890263941, now seen corresponding path program 1 times [2022-11-03 01:58:10,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:10,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217373276] [2022-11-03 01:58:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:10,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:13,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:13,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217373276] [2022-11-03 01:58:13,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:58:13,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005335985] [2022-11-03 01:58:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:13,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:13,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:13,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:13,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:58:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:23,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 25908 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:58:23,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 01:58:23,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:23,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005335985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:23,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:23,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:23,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841652027] [2022-11-03 01:58:23,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:23,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:23,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:23,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:23,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:23,273 INFO L87 Difference]: Start difference. First operand 18203 states and 26877 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:58:25,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:30,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:31,546 INFO L93 Difference]: Finished difference Result 36364 states and 53682 transitions. [2022-11-03 01:58:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:31,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 209 [2022-11-03 01:58:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:31,729 INFO L225 Difference]: With dead ends: 36364 [2022-11-03 01:58:31,729 INFO L226 Difference]: Without dead ends: 18186 [2022-11-03 01:58:31,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:31,791 INFO L413 NwaCegarLoop]: 2016 mSDtfsCounter, 1594 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:31,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 3592 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 01:58:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18186 states. [2022-11-03 01:58:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18186 to 18179. [2022-11-03 01:58:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18179 states, 11366 states have (on average 1.3929262713355621) internal successors, (15832), 12258 states have internal predecessors, (15832), 5344 states have call successors, (5344), 1473 states have call predecessors, (5344), 1468 states have return successors, (5641), 4867 states have call predecessors, (5641), 5340 states have call successors, (5641) [2022-11-03 01:58:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18179 states to 18179 states and 26817 transitions. [2022-11-03 01:58:33,248 INFO L78 Accepts]: Start accepts. Automaton has 18179 states and 26817 transitions. Word has length 209 [2022-11-03 01:58:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:33,249 INFO L495 AbstractCegarLoop]: Abstraction has 18179 states and 26817 transitions. [2022-11-03 01:58:33,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:58:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 18179 states and 26817 transitions. [2022-11-03 01:58:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-03 01:58:33,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:33,278 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:33,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:33,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 01:58:33,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:33,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1563891038, now seen corresponding path program 1 times [2022-11-03 01:58:33,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:33,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187871344] [2022-11-03 01:58:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:33,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:35,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:35,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187871344] [2022-11-03 01:58:35,426 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:58:35,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805682507] [2022-11-03 01:58:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:35,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:35,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:35,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:35,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:58:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:46,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 25906 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:58:46,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 01:58:46,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:58:46,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805682507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:46,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:46,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:46,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238737204] [2022-11-03 01:58:46,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:46,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:46,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:46,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:46,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:46,887 INFO L87 Difference]: Start difference. First operand 18179 states and 26817 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:58:49,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:52,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:54,960 INFO L93 Difference]: Finished difference Result 36316 states and 53562 transitions. [2022-11-03 01:58:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:54,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 208 [2022-11-03 01:58:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:55,021 INFO L225 Difference]: With dead ends: 36316 [2022-11-03 01:58:55,021 INFO L226 Difference]: Without dead ends: 18162 [2022-11-03 01:58:55,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:55,075 INFO L413 NwaCegarLoop]: 2284 mSDtfsCounter, 1591 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:55,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 3860 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 372 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 01:58:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18162 states. [2022-11-03 01:58:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18162 to 18155. [2022-11-03 01:58:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18155 states, 11354 states have (on average 1.3922846573894663) internal successors, (15808), 12246 states have internal predecessors, (15808), 5332 states have call successors, (5332), 1473 states have call predecessors, (5332), 1468 states have return successors, (5617), 4855 states have call predecessors, (5617), 5328 states have call successors, (5617) [2022-11-03 01:58:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18155 states to 18155 states and 26757 transitions. [2022-11-03 01:58:56,083 INFO L78 Accepts]: Start accepts. Automaton has 18155 states and 26757 transitions. Word has length 208 [2022-11-03 01:58:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:56,084 INFO L495 AbstractCegarLoop]: Abstraction has 18155 states and 26757 transitions. [2022-11-03 01:58:56,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 01:58:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 18155 states and 26757 transitions. [2022-11-03 01:58:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-03 01:58:56,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:56,100 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:56,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:56,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 01:58:56,315 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:56,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:56,316 INFO L85 PathProgramCache]: Analyzing trace with hash 432510703, now seen corresponding path program 1 times [2022-11-03 01:58:56,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:56,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977346270] [2022-11-03 01:58:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:56,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-03 01:58:56,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:56,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977346270] [2022-11-03 01:58:56,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977346270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:56,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:56,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:56,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826142607] [2022-11-03 01:58:56,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:56,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:56,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:56,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:56,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:56,745 INFO L87 Difference]: Start difference. First operand 18155 states and 26757 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:58:59,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:02,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:59:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:04,127 INFO L93 Difference]: Finished difference Result 31609 states and 46475 transitions. [2022-11-03 01:59:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:04,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 199 [2022-11-03 01:59:04,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:04,169 INFO L225 Difference]: With dead ends: 31609 [2022-11-03 01:59:04,169 INFO L226 Difference]: Without dead ends: 13477 [2022-11-03 01:59:04,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:04,212 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 14 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:04,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3190 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 336 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 01:59:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13477 states. [2022-11-03 01:59:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13477 to 13456. [2022-11-03 01:59:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13456 states, 8377 states have (on average 1.385102065178465) internal successors, (11603), 9039 states have internal predecessors, (11603), 3950 states have call successors, (3950), 1132 states have call predecessors, (3950), 1128 states have return successors, (4162), 3602 states have call predecessors, (4162), 3946 states have call successors, (4162) [2022-11-03 01:59:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13456 states to 13456 states and 19715 transitions. [2022-11-03 01:59:04,992 INFO L78 Accepts]: Start accepts. Automaton has 13456 states and 19715 transitions. Word has length 199 [2022-11-03 01:59:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:04,992 INFO L495 AbstractCegarLoop]: Abstraction has 13456 states and 19715 transitions. [2022-11-03 01:59:04,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:59:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 13456 states and 19715 transitions. [2022-11-03 01:59:05,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-03 01:59:05,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:05,013 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:05,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:59:05,014 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:05,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:05,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1565228776, now seen corresponding path program 1 times [2022-11-03 01:59:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:05,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743042630] [2022-11-03 01:59:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:05,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-11-03 01:59:05,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:05,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743042630] [2022-11-03 01:59:05,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743042630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:05,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:05,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:05,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906408209] [2022-11-03 01:59:05,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:05,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:05,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:05,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:05,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:05,672 INFO L87 Difference]: Start difference. First operand 13456 states and 19715 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 01:59:08,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:11,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:59:13,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:13,248 INFO L93 Difference]: Finished difference Result 16368 states and 23914 transitions. [2022-11-03 01:59:13,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:13,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 230 [2022-11-03 01:59:13,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:13,285 INFO L225 Difference]: With dead ends: 16368 [2022-11-03 01:59:13,285 INFO L226 Difference]: Without dead ends: 12066 [2022-11-03 01:59:13,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:13,298 INFO L413 NwaCegarLoop]: 2510 mSDtfsCounter, 1614 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 3875 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:13,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 3875 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 385 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-03 01:59:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12066 states. [2022-11-03 01:59:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12066 to 12063. [2022-11-03 01:59:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12063 states, 7492 states have (on average 1.3821409503470368) internal successors, (10355), 8088 states have internal predecessors, (10355), 3538 states have call successors, (3538), 1036 states have call predecessors, (3538), 1032 states have return successors, (3749), 3222 states have call predecessors, (3749), 3534 states have call successors, (3749) [2022-11-03 01:59:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12063 states to 12063 states and 17642 transitions. [2022-11-03 01:59:13,924 INFO L78 Accepts]: Start accepts. Automaton has 12063 states and 17642 transitions. Word has length 230 [2022-11-03 01:59:13,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:13,925 INFO L495 AbstractCegarLoop]: Abstraction has 12063 states and 17642 transitions. [2022-11-03 01:59:13,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 01:59:13,925 INFO L276 IsEmpty]: Start isEmpty. Operand 12063 states and 17642 transitions. [2022-11-03 01:59:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-03 01:59:13,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:13,947 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:13,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:59:13,947 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:13,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1675014353, now seen corresponding path program 1 times [2022-11-03 01:59:13,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:13,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791631028] [2022-11-03 01:59:13,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:13,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-11-03 01:59:15,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:15,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791631028] [2022-11-03 01:59:15,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791631028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:15,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138365338] [2022-11-03 01:59:15,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:15,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:15,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:15,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:15,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:59:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:21,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:59:21,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-03 01:59:21,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:59:21,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138365338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:21,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:59:21,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-11-03 01:59:21,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028528726] [2022-11-03 01:59:21,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:21,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:59:21,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:21,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:59:21,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:59:21,736 INFO L87 Difference]: Start difference. First operand 12063 states and 17642 transitions. Second operand has 6 states, 4 states have (on average 21.5) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-03 01:59:25,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:28,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:59:32,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:32,265 INFO L93 Difference]: Finished difference Result 24134 states and 35337 transitions. [2022-11-03 01:59:32,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:59:32,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 21.5) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 238 [2022-11-03 01:59:32,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:32,320 INFO L225 Difference]: With dead ends: 24134 [2022-11-03 01:59:32,320 INFO L226 Difference]: Without dead ends: 12087 [2022-11-03 01:59:32,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:59:32,465 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 3 mSDsluCounter, 7004 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7935 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:32,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7935 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 881 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 01:59:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12087 states. [2022-11-03 01:59:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12087 to 12065. [2022-11-03 01:59:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12065 states, 7493 states have (on average 1.3822234085146137) internal successors, (10357), 8090 states have internal predecessors, (10357), 3538 states have call successors, (3538), 1036 states have call predecessors, (3538), 1033 states have return successors, (3753), 3222 states have call predecessors, (3753), 3534 states have call successors, (3753) [2022-11-03 01:59:33,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12065 states to 12065 states and 17648 transitions. [2022-11-03 01:59:33,017 INFO L78 Accepts]: Start accepts. Automaton has 12065 states and 17648 transitions. Word has length 238 [2022-11-03 01:59:33,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:33,018 INFO L495 AbstractCegarLoop]: Abstraction has 12065 states and 17648 transitions. [2022-11-03 01:59:33,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 21.5) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-03 01:59:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 12065 states and 17648 transitions. [2022-11-03 01:59:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-03 01:59:33,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:33,037 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:33,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-03 01:59:33,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:33,238 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash 610104673, now seen corresponding path program 1 times [2022-11-03 01:59:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:33,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392371805] [2022-11-03 01:59:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:33,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-03 01:59:34,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:34,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392371805] [2022-11-03 01:59:34,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392371805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:34,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804947482] [2022-11-03 01:59:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:34,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:34,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:34,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:34,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:59:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:40,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:59:40,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-03 01:59:40,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-03 01:59:41,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804947482] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:41,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1569889114] [2022-11-03 01:59:41,910 INFO L159 IcfgInterpreter]: Started Sifa with 119 locations of interest [2022-11-03 01:59:41,911 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:59:41,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:59:41,920 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:59:41,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:59:44,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,880 INFO L244 Elim1Store]: Index analysis took 934 ms [2022-11-03 02:00:10,468 WARN L234 SmtUtils]: Spent 25.53s on a formula simplification. DAG size of input: 1391 DAG size of output: 695 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:00:10,472 INFO L356 Elim1Store]: treesize reduction 3290, result has 25.5 percent of original size [2022-11-03 02:00:10,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 90 select indices, 90 select index equivalence classes, 3832 disjoint index pairs (out of 4005 index pairs), introduced 90 new quantified variables, introduced 261 case distinctions, treesize of input 464 treesize of output 1413 [2022-11-03 02:00:12,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:12,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:12,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 87 select indices, 87 select index equivalence classes, 3918 disjoint index pairs (out of 3741 index pairs), introduced 87 new quantified variables, introduced 0 case distinctions, treesize of input 445 treesize of output 707 [2022-11-03 02:00:17,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:00:17,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:00:17,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-03 02:00:19,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:19,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:19,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 90 select indices, 90 select index equivalence classes, 4005 disjoint index pairs (out of 4005 index pairs), introduced 90 new quantified variables, introduced 0 case distinctions, treesize of input 451 treesize of output 271 [2022-11-03 02:00:19,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:19,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:19,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 89 select indices, 89 select index equivalence classes, 3918 disjoint index pairs (out of 3916 index pairs), introduced 89 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 268 [2022-11-03 02:00:20,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:20,571 INFO L244 Elim1Store]: Index analysis took 235 ms [2022-11-03 02:00:20,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 117 select indices, 117 select index equivalence classes, 908 disjoint index pairs (out of 6786 index pairs), introduced 117 new quantified variables, introduced 0 case distinctions, treesize of input 918 treesize of output 352 [2022-11-03 02:00:26,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:26,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 90 select indices, 90 select index equivalence classes, 4005 disjoint index pairs (out of 4005 index pairs), introduced 90 new quantified variables, introduced 0 case distinctions, treesize of input 451 treesize of output 271 [2022-11-03 02:00:27,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 89 select indices, 89 select index equivalence classes, 3918 disjoint index pairs (out of 3916 index pairs), introduced 89 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 268 [2022-11-03 02:00:27,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:27,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:00:28,062 INFO L244 Elim1Store]: Index analysis took 200 ms [2022-11-03 02:00:28,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 117 select indices, 117 select index equivalence classes, 908 disjoint index pairs (out of 6786 index pairs), introduced 117 new quantified variables, introduced 0 case distinctions, treesize of input 918 treesize of output 352 [2022-11-03 02:00:50,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:00:50,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:00:50,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:00:51,503 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:00:51,505 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:00:51,527 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:01:10,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:01:10,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:01:10,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:01:11,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:01:11,742 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:01:11,748 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:01:38,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:01:38,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:01:38,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:01:39,399 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:01:39,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:01:39,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:02:00,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:02:00,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:02:00,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:02:01,249 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:02:01,281 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:02:01,288 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:02:37,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:02:37,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:02:37,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:02:38,071 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:02:38,080 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:02:38,092 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:03:05,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:03:05,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:03:05,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:03:06,324 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:03:06,326 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:03:06,348 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:03:34,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:03:34,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:03:34,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:03:34,550 INFO L356 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-03 02:03:34,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2022-11-03 02:03:34,623 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:03:34,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2022-11-03 02:03:34,711 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:03:34,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-11-03 02:03:34,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 02:03:34,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 02:03:34,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 02:03:38,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:38,813 INFO L244 Elim1Store]: Index analysis took 127 ms [2022-11-03 02:03:38,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 45 select indices, 45 select index equivalence classes, 541 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 136 [2022-11-03 02:03:39,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:03:39,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:03:39,385 INFO L244 Elim1Store]: Index analysis took 139 ms [2022-11-03 02:03:39,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 45 select indices, 45 select index equivalence classes, 541 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 136 [2022-11-03 02:03:40,139 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:03:40,150 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:04:12,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:12,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,038 INFO L244 Elim1Store]: Index analysis took 125 ms [2022-11-03 02:04:13,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 45 select indices, 45 select index equivalence classes, 541 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 136 [2022-11-03 02:04:13,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:04:13,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:04:13,745 INFO L244 Elim1Store]: Index analysis took 149 ms [2022-11-03 02:04:13,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 45 select indices, 45 select index equivalence classes, 541 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 136 [2022-11-03 02:04:14,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:04:14,421 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:05:46,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:05:46,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 02:05:46,255 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:05:46,258 INFO L158 Benchmark]: Toolchain (without parser) took 576390.07ms. Allocated memory was 138.4MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 91.8MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 4.3GB. Max. memory is 16.1GB. [2022-11-03 02:05:46,259 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory is still 119.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:05:46,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2795.03ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 91.6MB in the beginning and 126.9MB in the end (delta: -35.4MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2022-11-03 02:05:46,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 438.68ms. Allocated memory is still 190.8MB. Free memory was 126.9MB in the beginning and 108.7MB in the end (delta: 18.3MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. [2022-11-03 02:05:46,259 INFO L158 Benchmark]: Boogie Preprocessor took 438.97ms. Allocated memory is still 190.8MB. Free memory was 108.7MB in the beginning and 91.8MB in the end (delta: 16.9MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. [2022-11-03 02:05:46,260 INFO L158 Benchmark]: RCFGBuilder took 10970.83ms. Allocated memory was 190.8MB in the beginning and 757.1MB in the end (delta: 566.2MB). Free memory was 91.8MB in the beginning and 436.2MB in the end (delta: -344.5MB). Peak memory consumption was 301.2MB. Max. memory is 16.1GB. [2022-11-03 02:05:46,260 INFO L158 Benchmark]: TraceAbstraction took 561738.99ms. Allocated memory was 757.1MB in the beginning and 5.1GB in the end (delta: 4.3GB). Free memory was 435.2MB in the beginning and 1.8GB in the end (delta: -1.3GB). Peak memory consumption was 4.0GB. Max. memory is 16.1GB. [2022-11-03 02:05:46,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory is still 119.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2795.03ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 91.6MB in the beginning and 126.9MB in the end (delta: -35.4MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 438.68ms. Allocated memory is still 190.8MB. Free memory was 126.9MB in the beginning and 108.7MB in the end (delta: 18.3MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 438.97ms. Allocated memory is still 190.8MB. Free memory was 108.7MB in the beginning and 91.8MB in the end (delta: 16.9MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. * RCFGBuilder took 10970.83ms. Allocated memory was 190.8MB in the beginning and 757.1MB in the end (delta: 566.2MB). Free memory was 91.8MB in the beginning and 436.2MB in the end (delta: -344.5MB). Peak memory consumption was 301.2MB. Max. memory is 16.1GB. * TraceAbstraction took 561738.99ms. Allocated memory was 757.1MB in the beginning and 5.1GB in the end (delta: 4.3GB). Free memory was 435.2MB in the beginning and 1.8GB in the end (delta: -1.3GB). Peak memory consumption was 4.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:05:46,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:05:48,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:05:48,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:05:48,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:05:48,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:05:48,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:05:48,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:05:48,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:05:48,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:05:48,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:05:48,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:05:48,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:05:48,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:05:48,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:05:48,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:05:48,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:05:48,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:05:48,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:05:48,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:05:48,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:05:48,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:05:48,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:05:48,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:05:48,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:05:48,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:05:48,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:05:48,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:05:48,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:05:48,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:05:48,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:05:48,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:05:48,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:05:48,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:05:48,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:05:48,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:05:48,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:05:48,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:05:48,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:05:48,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:05:48,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:05:48,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:05:48,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:05:48,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:05:48,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:05:48,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:05:48,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:05:48,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:05:48,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:05:48,841 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:05:48,842 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:05:48,842 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:05:48,842 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:05:48,843 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:05:48,843 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:05:48,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:05:48,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:05:48,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:05:48,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:05:48,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:05:48,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:05:48,846 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:05:48,846 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:05:48,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:05:48,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:05:48,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:05:48,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:05:48,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:05:48,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:05:48,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:05:48,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:05:48,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:05:48,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:05:48,849 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:05:48,849 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:05:48,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:05:48,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:05:48,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:05:48,850 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 [2022-11-03 02:05:49,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:05:49,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:05:49,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:05:49,273 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:05:49,275 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:05:49,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:05:49,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/data/e158c5ec0/e9b3774459a84364be97007103e38f50/FLAGea9d2d654 [2022-11-03 02:05:50,279 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:05:50,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:05:50,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/data/e158c5ec0/e9b3774459a84364be97007103e38f50/FLAGea9d2d654 [2022-11-03 02:05:50,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/data/e158c5ec0/e9b3774459a84364be97007103e38f50 [2022-11-03 02:05:50,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:05:50,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:05:50,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:05:50,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:05:50,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:05:50,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:05:50" (1/1) ... [2022-11-03 02:05:50,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d428f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:50, skipping insertion in model container [2022-11-03 02:05:50,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:05:50" (1/1) ... [2022-11-03 02:05:50,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:05:50,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:05:52,904 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2022-11-03 02:05:52,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:05:53,002 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 02:05:53,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:05:53,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2022-11-03 02:05:53,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:05:53,498 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:05:53,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2022-11-03 02:05:53,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:05:54,041 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:05:54,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54 WrapperNode [2022-11-03 02:05:54,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:05:54,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:05:54,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:05:54,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:05:54,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,344 INFO L138 Inliner]: procedures = 276, calls = 1811, calls flagged for inlining = 104, calls inlined = 100, statements flattened = 4398 [2022-11-03 02:05:54,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:05:54,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:05:54,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:05:54,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:05:54,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:05:54,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:05:54,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:05:54,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:05:54,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (1/1) ... [2022-11-03 02:05:54,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:05:54,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:54,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:05:54,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:05:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 02:05:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:05:54,757 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:05:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2022-11-03 02:05:54,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2022-11-03 02:05:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 02:05:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:05:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:05:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 02:05:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:05:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:05:54,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:05:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:05:54,759 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:05:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_delete [2022-11-03 02:05:54,760 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_delete [2022-11-03 02:05:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2022-11-03 02:05:54,760 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2022-11-03 02:05:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2022-11-03 02:05:54,760 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2022-11-03 02:05:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-03 02:05:54,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-03 02:05:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-11-03 02:05:54,761 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-11-03 02:05:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:05:54,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:05:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-03 02:05:54,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-03 02:05:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 02:05:54,762 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 02:05:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2022-11-03 02:05:54,763 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2022-11-03 02:05:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_50 [2022-11-03 02:05:54,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_50 [2022-11-03 02:05:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:05:54,763 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:05:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:05:54,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:05:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:05:54,764 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:05:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:05:54,764 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:05:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_detect_change [2022-11-03 02:05:54,765 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_detect_change [2022-11-03 02:05:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 02:05:54,765 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 02:05:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_cancel [2022-11-03 02:05:54,766 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_cancel [2022-11-03 02:05:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2022-11-03 02:05:54,767 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2022-11-03 02:05:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2022-11-03 02:05:54,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2022-11-03 02:05:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2022-11-03 02:05:54,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2022-11-03 02:05:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:05:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2022-11-03 02:05:54,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2022-11-03 02:05:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:05:54,769 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:05:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-03 02:05:54,770 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-03 02:05:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:05:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2022-11-03 02:05:54,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2022-11-03 02:05:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 02:05:54,770 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 02:05:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2022-11-03 02:05:54,771 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2022-11-03 02:05:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_disconnect [2022-11-03 02:05:54,772 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_disconnect [2022-11-03 02:05:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2022-11-03 02:05:54,772 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2022-11-03 02:05:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2022-11-03 02:05:54,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2022-11-03 02:05:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 02:05:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 02:05:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 02:05:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:05:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:05:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:05:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-03 02:05:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:05:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 02:05:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 02:05:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 02:05:54,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 02:05:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:05:54,776 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:05:54,776 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2022-11-03 02:05:54,776 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2022-11-03 02:05:54,777 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:05:54,777 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:05:54,777 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:05:54,777 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:05:54,778 INFO L130 BoogieDeclarations]: Found specification of procedure add_offloaded_reg [2022-11-03 02:05:54,778 INFO L138 BoogieDeclarations]: Found implementation of procedure add_offloaded_reg [2022-11-03 02:05:54,778 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-03 02:05:54,778 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-03 02:05:54,778 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2022-11-03 02:05:54,778 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2022-11-03 02:05:54,778 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_to_multiple_of_64 [2022-11-03 02:05:54,779 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_to_multiple_of_64 [2022-11-03 02:05:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 02:05:54,779 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 02:05:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 02:05:54,780 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 02:05:54,780 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2022-11-03 02:05:54,780 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2022-11-03 02:05:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2022-11-03 02:05:54,781 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2022-11-03 02:05:54,784 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2022-11-03 02:05:54,784 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2022-11-03 02:05:54,784 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 02:05:54,784 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 02:05:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-03 02:05:54,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-03 02:05:54,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:05:54,787 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:05:54,787 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:05:54,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:05:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2022-11-03 02:05:54,791 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2022-11-03 02:05:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 02:05:54,791 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 02:05:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:05:54,791 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:05:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-03 02:05:54,792 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-03 02:05:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_response_error [2022-11-03 02:05:54,792 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_response_error [2022-11-03 02:05:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 02:05:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2022-11-03 02:05:54,792 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2022-11-03 02:05:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 02:05:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 02:05:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2022-11-03 02:05:54,793 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2022-11-03 02:05:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 02:05:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:05:54,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:05:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2022-11-03 02:05:54,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2022-11-03 02:05:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:05:54,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:05:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:05:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_queue_poll_work [2022-11-03 02:05:54,795 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_queue_poll_work [2022-11-03 02:05:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2022-11-03 02:05:54,795 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2022-11-03 02:05:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:05:54,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:05:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-03 02:05:54,796 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-03 02:05:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2022-11-03 02:05:54,796 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2022-11-03 02:05:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:05:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_to_buffer [2022-11-03 02:05:54,796 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_to_buffer [2022-11-03 02:05:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_9 [2022-11-03 02:05:54,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_9 [2022-11-03 02:05:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:05:54,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:05:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:05:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure __download_offload_pseudocode [2022-11-03 02:05:54,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __download_offload_pseudocode [2022-11-03 02:05:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 02:05:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2022-11-03 02:05:54,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2022-11-03 02:05:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 02:05:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:05:54,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:05:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 02:05:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2022-11-03 02:05:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2022-11-03 02:05:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2022-11-03 02:05:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2022-11-03 02:05:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_InterfaceNumber [2022-11-03 02:05:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_InterfaceNumber [2022-11-03 02:05:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 02:05:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 02:05:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:05:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:05:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 02:05:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 02:05:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2022-11-03 02:05:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2022-11-03 02:05:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2022-11-03 02:05:54,801 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2022-11-03 02:05:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure new_system_port_status [2022-11-03 02:05:54,801 INFO L138 BoogieDeclarations]: Found implementation of procedure new_system_port_status [2022-11-03 02:05:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2022-11-03 02:05:54,801 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2022-11-03 02:05:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:05:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:05:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 02:05:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 02:05:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2022-11-03 02:05:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2022-11-03 02:05:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2022-11-03 02:05:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2022-11-03 02:05:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-11-03 02:05:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-11-03 02:05:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-03 02:05:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_47 [2022-11-03 02:05:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_47 [2022-11-03 02:05:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-03 02:05:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-03 02:05:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 02:05:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2022-11-03 02:05:54,804 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2022-11-03 02:05:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2022-11-03 02:05:54,804 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2022-11-03 02:05:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 02:05:54,804 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 02:05:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_deadwork_thread [2022-11-03 02:05:54,805 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_deadwork_thread [2022-11-03 02:05:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure check_vub300_port_status [2022-11-03 02:05:54,805 INFO L138 BoogieDeclarations]: Found implementation of procedure check_vub300_port_status [2022-11-03 02:05:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 02:05:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:05:54,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:05:55,644 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:05:55,647 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:06:04,966 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:06:46,313 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:06:46,336 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:06:46,336 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:06:46,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:46 BoogieIcfgContainer [2022-11-03 02:06:46,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:06:46,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:06:46,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:06:46,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:06:46,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:05:50" (1/3) ... [2022-11-03 02:06:46,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4cfbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:46, skipping insertion in model container [2022-11-03 02:06:46,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:54" (2/3) ... [2022-11-03 02:06:46,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4cfbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:46, skipping insertion in model container [2022-11-03 02:06:46,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:46" (3/3) ... [2022-11-03 02:06:46,364 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:06:46,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:06:46,393 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:06:46,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:06:46,506 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;@8122fac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:06:46,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:06:46,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 1581 states, 1104 states have (on average 1.3967391304347827) internal successors, (1542), 1170 states have internal predecessors, (1542), 382 states have call successors, (382), 94 states have call predecessors, (382), 93 states have return successors, (373), 347 states have call predecessors, (373), 373 states have call successors, (373) [2022-11-03 02:06:46,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 02:06:46,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:46,546 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:46,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash -956630900, now seen corresponding path program 1 times [2022-11-03 02:06:46,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:06:46,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764469539] [2022-11-03 02:06:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:46,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:06:46,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:06:46,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:06:46,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:06:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:47,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:06:47,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 02:06:47,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:06:47,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:06:47,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764469539] [2022-11-03 02:06:47,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764469539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:47,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:47,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:06:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705251107] [2022-11-03 02:06:47,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:47,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:06:47,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:06:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:06:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:06:47,972 INFO L87 Difference]: Start difference. First operand has 1581 states, 1104 states have (on average 1.3967391304347827) internal successors, (1542), 1170 states have internal predecessors, (1542), 382 states have call successors, (382), 94 states have call predecessors, (382), 93 states have return successors, (373), 347 states have call predecessors, (373), 373 states have call successors, (373) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:06:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:48,234 INFO L93 Difference]: Finished difference Result 3157 states and 4649 transitions. [2022-11-03 02:06:48,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:06:48,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-03 02:06:48,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:48,270 INFO L225 Difference]: With dead ends: 3157 [2022-11-03 02:06:48,270 INFO L226 Difference]: Without dead ends: 1565 [2022-11-03 02:06:48,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:06:48,296 INFO L413 NwaCegarLoop]: 2290 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:48,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:06:48,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-11-03 02:06:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2022-11-03 02:06:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1099 states have (on average 1.3876251137397635) internal successors, (1525), 1154 states have internal predecessors, (1525), 373 states have call successors, (373), 93 states have call predecessors, (373), 92 states have return successors, (369), 343 states have call predecessors, (369), 369 states have call successors, (369) [2022-11-03 02:06:48,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2267 transitions. [2022-11-03 02:06:48,479 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2267 transitions. Word has length 113 [2022-11-03 02:06:48,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:48,479 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 2267 transitions. [2022-11-03 02:06:48,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:06:48,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2267 transitions. [2022-11-03 02:06:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 02:06:48,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:48,487 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:48,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 02:06:48,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:06:48,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:48,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1997437564, now seen corresponding path program 1 times [2022-11-03 02:06:48,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:06:48,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106951195] [2022-11-03 02:06:48,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:48,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:06:48,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:06:48,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:06:48,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:06:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:49,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:06:49,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 02:06:50,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:06:50,380 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:06:50,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106951195] [2022-11-03 02:06:50,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106951195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:50,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:50,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:06:50,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616700169] [2022-11-03 02:06:50,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:50,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:06:50,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:06:50,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:06:50,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:06:50,386 INFO L87 Difference]: Start difference. First operand 1565 states and 2267 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:06:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:51,484 INFO L93 Difference]: Finished difference Result 3124 states and 4529 transitions. [2022-11-03 02:06:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:06:51,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 113 [2022-11-03 02:06:51,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:51,508 INFO L225 Difference]: With dead ends: 3124 [2022-11-03 02:06:51,508 INFO L226 Difference]: Without dead ends: 1568 [2022-11-03 02:06:51,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:06:51,521 INFO L413 NwaCegarLoop]: 2258 mSDtfsCounter, 6 mSDsluCounter, 9015 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11273 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:51,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11273 Invalid, 58 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:06:51,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2022-11-03 02:06:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1568. [2022-11-03 02:06:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1101 states have (on average 1.387829246139873) internal successors, (1528), 1157 states have internal predecessors, (1528), 373 states have call successors, (373), 93 states have call predecessors, (373), 93 states have return successors, (373), 343 states have call predecessors, (373), 369 states have call successors, (373) [2022-11-03 02:06:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2274 transitions. [2022-11-03 02:06:51,644 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2274 transitions. Word has length 113 [2022-11-03 02:06:51,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:51,647 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2274 transitions. [2022-11-03 02:06:51,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:06:51,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2274 transitions. [2022-11-03 02:06:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:06:51,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:51,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:51,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:51,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:06:51,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash -54256158, now seen corresponding path program 1 times [2022-11-03 02:06:51,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:06:51,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248763895] [2022-11-03 02:06:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:51,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:06:51,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:06:51,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:06:51,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:06:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:52,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:06:52,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 02:06:53,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:06:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:06:55,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:06:55,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248763895] [2022-11-03 02:06:55,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248763895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:06:55,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [175694916] [2022-11-03 02:06:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:55,429 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:06:55,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:06:55,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:06:55,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-03 02:06:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:56,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:06:56,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:06:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-03 02:06:58,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:06:58,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [175694916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:58,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:06:58,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 7] total 12 [2022-11-03 02:06:58,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235982552] [2022-11-03 02:06:58,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:58,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:58,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:06:58,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:58,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:06:58,866 INFO L87 Difference]: Start difference. First operand 1568 states and 2274 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 02:06:59,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:59,187 INFO L93 Difference]: Finished difference Result 4651 states and 6894 transitions. [2022-11-03 02:06:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:59,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 115 [2022-11-03 02:06:59,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:59,213 INFO L225 Difference]: With dead ends: 4651 [2022-11-03 02:06:59,214 INFO L226 Difference]: Without dead ends: 3106 [2022-11-03 02:06:59,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:06:59,226 INFO L413 NwaCegarLoop]: 2881 mSDtfsCounter, 2198 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 5139 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:59,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2198 Valid, 5139 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:06:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2022-11-03 02:06:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 3101. [2022-11-03 02:06:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 2181 states have (on average 1.3888124713434205) internal successors, (3029), 2289 states have internal predecessors, (3029), 735 states have call successors, (735), 184 states have call predecessors, (735), 184 states have return successors, (770), 679 states have call predecessors, (770), 731 states have call successors, (770) [2022-11-03 02:06:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 4534 transitions. [2022-11-03 02:06:59,402 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 4534 transitions. Word has length 115 [2022-11-03 02:06:59,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:59,403 INFO L495 AbstractCegarLoop]: Abstraction has 3101 states and 4534 transitions. [2022-11-03 02:06:59,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 02:06:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 4534 transitions. [2022-11-03 02:06:59,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 02:06:59,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:59,406 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:59,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:59,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:06:59,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:06:59,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1682486720, now seen corresponding path program 1 times [2022-11-03 02:06:59,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:06:59,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315265973] [2022-11-03 02:06:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:59,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:06:59,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:06:59,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:06:59,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:07:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:00,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:07:00,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 02:07:01,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:07:02,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315265973] [2022-11-03 02:07:02,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315265973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1815780028] [2022-11-03 02:07:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:02,870 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:07:02,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:07:02,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-03 02:07:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:04,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:07:04,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-03 02:07:05,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:05,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1815780028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:05,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:07:05,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 7] total 12 [2022-11-03 02:07:05,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456525688] [2022-11-03 02:07:05,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:05,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:05,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:07:05,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:05,964 INFO L87 Difference]: Start difference. First operand 3101 states and 4534 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 02:07:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:06,304 INFO L93 Difference]: Finished difference Result 8894 states and 13248 transitions. [2022-11-03 02:07:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:06,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 116 [2022-11-03 02:07:06,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:06,365 INFO L225 Difference]: With dead ends: 8894 [2022-11-03 02:07:06,365 INFO L226 Difference]: Without dead ends: 5816 [2022-11-03 02:07:06,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:06,393 INFO L413 NwaCegarLoop]: 2593 mSDtfsCounter, 1944 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 4821 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:06,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1944 Valid, 4821 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5816 states. [2022-11-03 02:07:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5816 to 5806. [2022-11-03 02:07:06,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5806 states, 4084 states have (on average 1.3949559255631734) internal successors, (5697), 4294 states have internal predecessors, (5697), 1371 states have call successors, (1371), 350 states have call predecessors, (1371), 350 states have return successors, (1439), 1263 states have call predecessors, (1439), 1367 states have call successors, (1439) [2022-11-03 02:07:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5806 states to 5806 states and 8507 transitions. [2022-11-03 02:07:06,924 INFO L78 Accepts]: Start accepts. Automaton has 5806 states and 8507 transitions. Word has length 116 [2022-11-03 02:07:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:06,925 INFO L495 AbstractCegarLoop]: Abstraction has 5806 states and 8507 transitions. [2022-11-03 02:07:06,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 02:07:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5806 states and 8507 transitions. [2022-11-03 02:07:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:07:06,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:06,929 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:06,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:07,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-03 02:07:07,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:07,357 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:07,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:07,357 INFO L85 PathProgramCache]: Analyzing trace with hash -618021723, now seen corresponding path program 1 times [2022-11-03 02:07:07,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:07:07,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302097406] [2022-11-03 02:07:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:07,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:07:07,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:07:07,360 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:07:07,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:07:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:08,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:07:08,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 02:07:08,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:07:10,339 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:10,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302097406] [2022-11-03 02:07:10,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302097406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:10,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2117771572] [2022-11-03 02:07:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:10,340 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:10,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:07:10,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:07:10,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-03 02:07:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:11,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:07:11,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-03 02:07:13,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:13,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2117771572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:13,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:07:13,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 7] total 12 [2022-11-03 02:07:13,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917366878] [2022-11-03 02:07:13,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:13,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:13,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:07:13,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:13,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:13,449 INFO L87 Difference]: Start difference. First operand 5806 states and 8507 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 02:07:13,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:13,736 INFO L93 Difference]: Finished difference Result 5808 states and 8508 transitions. [2022-11-03 02:07:13,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:13,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 117 [2022-11-03 02:07:13,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:13,783 INFO L225 Difference]: With dead ends: 5808 [2022-11-03 02:07:13,784 INFO L226 Difference]: Without dead ends: 5805 [2022-11-03 02:07:13,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:13,791 INFO L413 NwaCegarLoop]: 2264 mSDtfsCounter, 2199 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:13,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 2264 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:07:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5805 states. [2022-11-03 02:07:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5805 to 5805. [2022-11-03 02:07:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5805 states, 4084 states have (on average 1.3947110675808032) internal successors, (5696), 4293 states have internal predecessors, (5696), 1370 states have call successors, (1370), 350 states have call predecessors, (1370), 350 states have return successors, (1439), 1263 states have call predecessors, (1439), 1367 states have call successors, (1439) [2022-11-03 02:07:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 8505 transitions. [2022-11-03 02:07:14,287 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 8505 transitions. Word has length 117 [2022-11-03 02:07:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:14,289 INFO L495 AbstractCegarLoop]: Abstraction has 5805 states and 8505 transitions. [2022-11-03 02:07:14,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 02:07:14,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 8505 transitions. [2022-11-03 02:07:14,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:07:14,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:14,294 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:14,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:14,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:14,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:14,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:14,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:14,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1979340317, now seen corresponding path program 1 times [2022-11-03 02:07:14,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:07:14,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858092384] [2022-11-03 02:07:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:14,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:07:14,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:07:14,713 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:07:14,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:07:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:15,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:07:15,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 02:07:16,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:07:17,567 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:17,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858092384] [2022-11-03 02:07:17,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858092384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:17,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2031392661] [2022-11-03 02:07:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:17,568 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:17,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:07:17,572 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:07:17,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-03 02:07:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:18,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:07:18,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-03 02:07:20,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:20,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2031392661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:20,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:07:20,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 7] total 12 [2022-11-03 02:07:20,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453185988] [2022-11-03 02:07:20,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:20,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:20,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:07:20,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:20,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:20,651 INFO L87 Difference]: Start difference. First operand 5805 states and 8505 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 02:07:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:21,028 INFO L93 Difference]: Finished difference Result 5807 states and 8506 transitions. [2022-11-03 02:07:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:21,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 118 [2022-11-03 02:07:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:21,072 INFO L225 Difference]: With dead ends: 5807 [2022-11-03 02:07:21,072 INFO L226 Difference]: Without dead ends: 5775 [2022-11-03 02:07:21,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:21,079 INFO L413 NwaCegarLoop]: 2263 mSDtfsCounter, 2196 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:21,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:07:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2022-11-03 02:07:21,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 5775. [2022-11-03 02:07:21,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5775 states, 4068 states have (on average 1.3952802359882006) internal successors, (5676), 4276 states have internal predecessors, (5676), 1357 states have call successors, (1357), 349 states have call predecessors, (1357), 349 states have return successors, (1427), 1251 states have call predecessors, (1427), 1355 states have call successors, (1427) [2022-11-03 02:07:21,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5775 states to 5775 states and 8460 transitions. [2022-11-03 02:07:21,584 INFO L78 Accepts]: Start accepts. Automaton has 5775 states and 8460 transitions. Word has length 118 [2022-11-03 02:07:21,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:21,585 INFO L495 AbstractCegarLoop]: Abstraction has 5775 states and 8460 transitions. [2022-11-03 02:07:21,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 02:07:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5775 states and 8460 transitions. [2022-11-03 02:07:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-03 02:07:21,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:21,597 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:21,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-11-03 02:07:21,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:22,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:07:22,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:22,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:22,020 INFO L85 PathProgramCache]: Analyzing trace with hash -965151074, now seen corresponding path program 1 times [2022-11-03 02:07:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:07:22,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548710025] [2022-11-03 02:07:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:22,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:07:22,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:07:22,024 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:07:22,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:07:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:23,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:07:23,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-03 02:07:23,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 02:07:25,255 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:25,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548710025] [2022-11-03 02:07:25,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548710025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:25,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2013465322] [2022-11-03 02:07:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:25,256 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:25,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:07:25,260 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:07:25,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-03 02:07:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:26,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:07:26,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-03 02:07:26,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:26,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2013465322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:26,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:07:26,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 02:07:26,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253415332] [2022-11-03 02:07:26,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:26,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:26,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:07:26,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:26,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:26,907 INFO L87 Difference]: Start difference. First operand 5775 states and 8460 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:07:28,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:28,145 INFO L93 Difference]: Finished difference Result 16672 states and 24422 transitions. [2022-11-03 02:07:28,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:28,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 168 [2022-11-03 02:07:28,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:28,243 INFO L225 Difference]: With dead ends: 16672 [2022-11-03 02:07:28,243 INFO L226 Difference]: Without dead ends: 10920 [2022-11-03 02:07:28,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:28,277 INFO L413 NwaCegarLoop]: 2684 mSDtfsCounter, 1924 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 4860 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:28,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 4860 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:07:28,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10920 states. [2022-11-03 02:07:29,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10920 to 10899. [2022-11-03 02:07:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10899 states, 7672 states have (on average 1.3983315954118873) internal successors, (10728), 8084 states have internal predecessors, (10728), 2549 states have call successors, (2549), 677 states have call predecessors, (2549), 677 states have return successors, (2685), 2339 states have call predecessors, (2685), 2547 states have call successors, (2685) [2022-11-03 02:07:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10899 states to 10899 states and 15962 transitions. [2022-11-03 02:07:29,285 INFO L78 Accepts]: Start accepts. Automaton has 10899 states and 15962 transitions. Word has length 168 [2022-11-03 02:07:29,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:29,286 INFO L495 AbstractCegarLoop]: Abstraction has 10899 states and 15962 transitions. [2022-11-03 02:07:29,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:07:29,286 INFO L276 IsEmpty]: Start isEmpty. Operand 10899 states and 15962 transitions. [2022-11-03 02:07:29,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-03 02:07:29,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:29,310 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:29,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:29,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:29,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:07:29,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:29,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:29,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1976178723, now seen corresponding path program 1 times [2022-11-03 02:07:29,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:07:29,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720877983] [2022-11-03 02:07:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:29,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:07:29,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:07:29,728 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:07:29,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:07:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:31,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:07:31,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-03 02:07:31,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-03 02:07:33,054 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:33,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720877983] [2022-11-03 02:07:33,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720877983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:33,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [104944489] [2022-11-03 02:07:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:33,056 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:33,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:07:33,057 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:07:33,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-03 02:07:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:34,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:07:34,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-03 02:07:34,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:34,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [104944489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:34,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:07:34,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 02:07:34,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939126559] [2022-11-03 02:07:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:34,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:34,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:07:34,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:34,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:34,752 INFO L87 Difference]: Start difference. First operand 10899 states and 15962 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:07:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:35,486 INFO L93 Difference]: Finished difference Result 21794 states and 31920 transitions. [2022-11-03 02:07:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:35,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 206 [2022-11-03 02:07:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:35,539 INFO L225 Difference]: With dead ends: 21794 [2022-11-03 02:07:35,539 INFO L226 Difference]: Without dead ends: 10916 [2022-11-03 02:07:35,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:35,587 INFO L413 NwaCegarLoop]: 2260 mSDtfsCounter, 8 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4515 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:35,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4515 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:07:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10916 states. [2022-11-03 02:07:36,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10916 to 10902. [2022-11-03 02:07:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10902 states, 7675 states have (on average 1.397915309446254) internal successors, (10729), 8087 states have internal predecessors, (10729), 2549 states have call successors, (2549), 677 states have call predecessors, (2549), 677 states have return successors, (2685), 2339 states have call predecessors, (2685), 2547 states have call successors, (2685) [2022-11-03 02:07:36,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10902 states to 10902 states and 15963 transitions. [2022-11-03 02:07:36,584 INFO L78 Accepts]: Start accepts. Automaton has 10902 states and 15963 transitions. Word has length 206 [2022-11-03 02:07:36,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:36,585 INFO L495 AbstractCegarLoop]: Abstraction has 10902 states and 15963 transitions. [2022-11-03 02:07:36,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:07:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 10902 states and 15963 transitions. [2022-11-03 02:07:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-03 02:07:36,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:36,620 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:36,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:36,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:37,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:07:37,032 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash -149187914, now seen corresponding path program 1 times [2022-11-03 02:07:37,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:07:37,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827968026] [2022-11-03 02:07:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:37,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:07:37,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:07:37,035 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:07:37,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:07:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:38,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:07:38,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 124 proven. 1 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-03 02:07:39,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-03 02:07:40,605 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:40,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827968026] [2022-11-03 02:07:40,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827968026] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:40,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [513783875] [2022-11-03 02:07:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:40,605 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:40,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:07:40,607 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:07:40,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 02:07:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:42,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:07:42,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-03 02:07:43,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:43,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [513783875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:43,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:07:43,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 02:07:43,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859634301] [2022-11-03 02:07:43,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:43,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:43,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:07:43,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:43,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:43,617 INFO L87 Difference]: Start difference. First operand 10902 states and 15963 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:07:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:44,740 INFO L93 Difference]: Finished difference Result 24307 states and 35535 transitions. [2022-11-03 02:07:44,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:44,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 223 [2022-11-03 02:07:44,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:44,818 INFO L225 Difference]: With dead ends: 24307 [2022-11-03 02:07:44,819 INFO L226 Difference]: Without dead ends: 13428 [2022-11-03 02:07:44,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:07:44,857 INFO L413 NwaCegarLoop]: 3917 mSDtfsCounter, 2111 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 5812 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:44,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 5812 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:07:44,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13428 states. [2022-11-03 02:07:46,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13428 to 13425. [2022-11-03 02:07:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13425 states, 9445 states have (on average 1.394494441503441) internal successors, (13171), 9953 states have internal predecessors, (13171), 3119 states have call successors, (3119), 860 states have call predecessors, (3119), 860 states have return successors, (3288), 2855 states have call predecessors, (3288), 3117 states have call successors, (3288) [2022-11-03 02:07:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13425 states to 13425 states and 19578 transitions. [2022-11-03 02:07:46,473 INFO L78 Accepts]: Start accepts. Automaton has 13425 states and 19578 transitions. Word has length 223 [2022-11-03 02:07:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:46,479 INFO L495 AbstractCegarLoop]: Abstraction has 13425 states and 19578 transitions. [2022-11-03 02:07:46,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:07:46,480 INFO L276 IsEmpty]: Start isEmpty. Operand 13425 states and 19578 transitions. [2022-11-03 02:07:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-11-03 02:07:46,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:46,568 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:46,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:46,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:46,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:07:46,979 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1287257945, now seen corresponding path program 1 times [2022-11-03 02:07:46,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:07:46,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603318543] [2022-11-03 02:07:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:46,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:07:46,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:07:46,985 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:07:47,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:07:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:48,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:07:48,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 02:07:49,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 02:07:51,131 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:07:51,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603318543] [2022-11-03 02:07:51,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603318543] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:51,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [698844434] [2022-11-03 02:07:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:51,132 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:07:51,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:07:51,133 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:07:51,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-03 02:07:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:52,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:07:52,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-03 02:07:55,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:08:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-03 02:08:02,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [698844434] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:08:02,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:08:02,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 7, 11] total 26 [2022-11-03 02:08:02,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810487745] [2022-11-03 02:08:02,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:02,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:08:02,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:08:02,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:08:02,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:08:02,265 INFO L87 Difference]: Start difference. First operand 13425 states and 19578 transitions. Second operand has 9 states, 8 states have (on average 19.75) internal successors, (158), 7 states have internal predecessors, (158), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 02:08:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:04,351 INFO L93 Difference]: Finished difference Result 20480 states and 30184 transitions. [2022-11-03 02:08:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:08:04,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 19.75) internal successors, (158), 7 states have internal predecessors, (158), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 283 [2022-11-03 02:08:04,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:04,435 INFO L225 Difference]: With dead ends: 20480 [2022-11-03 02:08:04,435 INFO L226 Difference]: Without dead ends: 13755 [2022-11-03 02:08:04,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 1104 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:08:04,469 INFO L413 NwaCegarLoop]: 2283 mSDtfsCounter, 22 mSDsluCounter, 15933 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 18216 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:04,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 18216 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:08:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13755 states. [2022-11-03 02:08:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13755 to 13505. [2022-11-03 02:08:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13505 states, 9490 states have (on average 1.3926238145416228) internal successors, (13216), 10013 states have internal predecessors, (13216), 3129 states have call successors, (3129), 860 states have call predecessors, (3129), 885 states have return successors, (3355), 2875 states have call predecessors, (3355), 3127 states have call successors, (3355) [2022-11-03 02:08:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13505 states to 13505 states and 19700 transitions. [2022-11-03 02:08:05,739 INFO L78 Accepts]: Start accepts. Automaton has 13505 states and 19700 transitions. Word has length 283 [2022-11-03 02:08:05,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:05,740 INFO L495 AbstractCegarLoop]: Abstraction has 13505 states and 19700 transitions. [2022-11-03 02:08:05,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 19.75) internal successors, (158), 7 states have internal predecessors, (158), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 02:08:05,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13505 states and 19700 transitions. [2022-11-03 02:08:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-03 02:08:05,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:05,818 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:05,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:06,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:06,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:08:06,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:06,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:06,237 INFO L85 PathProgramCache]: Analyzing trace with hash -446877123, now seen corresponding path program 1 times [2022-11-03 02:08:06,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:08:06,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198756295] [2022-11-03 02:08:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:06,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:08:06,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:08:06,242 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:08:06,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:08:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:08,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:08:08,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 02:08:08,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:08:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-03 02:08:10,304 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:08:10,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198756295] [2022-11-03 02:08:10,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198756295] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:08:10,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1600598243] [2022-11-03 02:08:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:10,304 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:08:10,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:08:10,306 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:08:10,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-03 02:08:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:13,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:08:13,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 02:08:13,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:08:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-03 02:08:14,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1600598243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:08:14,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203475309] [2022-11-03 02:08:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:14,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:14,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:14,847 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:14,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-03 02:08:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:16,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:08:16,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 02:08:17,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:08:17,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203475309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:17,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-03 02:08:17,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 7, 7] total 14 [2022-11-03 02:08:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031265527] [2022-11-03 02:08:17,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:17,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:08:17,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:08:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:08:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:08:17,268 INFO L87 Difference]: Start difference. First operand 13505 states and 19700 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:08:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:32,870 INFO L93 Difference]: Finished difference Result 26968 states and 39337 transitions. [2022-11-03 02:08:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:08:32,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 289 [2022-11-03 02:08:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:32,956 INFO L225 Difference]: With dead ends: 26968 [2022-11-03 02:08:32,956 INFO L226 Difference]: Without dead ends: 13496 [2022-11-03 02:08:33,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1428 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:08:33,010 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 2612 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 4658 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:33,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2729 Valid, 4658 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2022-11-03 02:08:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13496 states. [2022-11-03 02:08:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13496 to 13485. [2022-11-03 02:08:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13485 states, 9480 states have (on average 1.3919831223628691) internal successors, (13196), 10003 states have internal predecessors, (13196), 3119 states have call successors, (3119), 860 states have call predecessors, (3119), 885 states have return successors, (3340), 2865 states have call predecessors, (3340), 3117 states have call successors, (3340) [2022-11-03 02:08:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13485 states to 13485 states and 19655 transitions. [2022-11-03 02:08:34,269 INFO L78 Accepts]: Start accepts. Automaton has 13485 states and 19655 transitions. Word has length 289 [2022-11-03 02:08:34,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:34,270 INFO L495 AbstractCegarLoop]: Abstraction has 13485 states and 19655 transitions. [2022-11-03 02:08:34,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:08:34,271 INFO L276 IsEmpty]: Start isEmpty. Operand 13485 states and 19655 transitions. [2022-11-03 02:08:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-03 02:08:34,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:34,307 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:34,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:34,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:34,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:34,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:08:34,924 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:34,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash 110767632, now seen corresponding path program 1 times [2022-11-03 02:08:34,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:08:34,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468179124] [2022-11-03 02:08:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:34,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:08:34,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:08:34,928 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:08:34,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:08:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:36,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:08:36,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 02:08:37,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:08:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-03 02:08:38,809 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:08:38,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468179124] [2022-11-03 02:08:38,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468179124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:08:38,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [606737087] [2022-11-03 02:08:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:38,810 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:08:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:08:38,817 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:08:38,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-03 02:08:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:42,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:08:42,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 02:08:42,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:08:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-03 02:08:43,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [606737087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:08:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075915493] [2022-11-03 02:08:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:43,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:43,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:08:43,484 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:08:43,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a440760-1189-4600-8242-0cf6eb1a9a18/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-03 02:08:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:44,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:08:44,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 02:08:46,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:08:46,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075915493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:46,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-03 02:08:46,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7, 7, 7] total 16 [2022-11-03 02:08:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853676351] [2022-11-03 02:08:46,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:46,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:08:46,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:08:46,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:08:46,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:08:46,445 INFO L87 Difference]: Start difference. First operand 13485 states and 19655 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35)