./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/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_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/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_3c71829c-210c-4c48-a418-a84f6b5811aa/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 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 --- 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 02:11:33,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:11:33,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:11:33,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:11:33,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:11:33,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:11:33,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:11:33,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:11:33,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:11:33,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:11:33,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:11:33,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:11:33,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:11:33,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:11:33,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:11:33,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:11:33,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:11:33,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:11:33,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:11:33,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:11:33,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:11:33,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:11:33,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:11:33,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:11:33,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:11:33,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:11:33,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:11:33,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:11:33,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:11:33,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:11:33,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:11:33,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:11:33,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:11:33,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:11:33,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:11:33,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:11:33,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:11:33,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:11:33,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:11:33,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:11:33,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:11:33,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:11:33,286 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:11:33,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:11:33,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:11:33,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:11:33,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:11:33,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:11:33,288 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:11:33,289 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:11:33,289 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:11:33,289 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:11:33,301 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:11:33,301 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:11:33,301 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:11:33,301 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:11:33,301 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:11:33,302 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:11:33,302 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:11:33,302 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:11:33,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:11:33,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:11:33,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:11:33,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:11:33,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:11:33,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:11:33,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:11:33,304 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:11:33,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:11:33,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:11:33,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:11:33,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:11:33,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:11:33,305 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:11:33,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:11:33,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:11:33,306 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:11:33,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:11:33,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:11:33,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:11:33,307 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_3c71829c-210c-4c48-a418-a84f6b5811aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 [2022-11-03 02:11:33,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:11:33,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:11:33,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:11:33,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:11:33,590 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:11:33,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2022-11-03 02:11:33,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/data/6c04bff9d/cc041ea7840f4e2191cc80376acac7f9/FLAG00eb14c4a [2022-11-03 02:11:34,465 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:11:34,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2022-11-03 02:11:34,505 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/data/6c04bff9d/cc041ea7840f4e2191cc80376acac7f9/FLAG00eb14c4a [2022-11-03 02:11:35,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/data/6c04bff9d/cc041ea7840f4e2191cc80376acac7f9 [2022-11-03 02:11:35,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:11:35,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:11:35,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:11:35,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:11:35,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:11:35,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:11:35" (1/1) ... [2022-11-03 02:11:35,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8c93c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:35, skipping insertion in model container [2022-11-03 02:11:35,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:11:35" (1/1) ... [2022-11-03 02:11:35,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:11:35,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:11:36,139 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_3c71829c-210c-4c48-a418-a84f6b5811aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2022-11-03 02:11:36,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:11:36,247 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:11:36,666 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_3c71829c-210c-4c48-a418-a84f6b5811aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2022-11-03 02:11:36,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:11:36,728 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:11:36,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36 WrapperNode [2022-11-03 02:11:36,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:11:36,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:11:36,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:11:36,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:11:36,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:36,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:36,946 INFO L138 Inliner]: procedures = 138, calls = 843, calls flagged for inlining = 61, calls inlined = 52, statements flattened = 1733 [2022-11-03 02:11:36,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:11:36,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:11:36,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:11:36,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:11:36,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:36,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:36,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:36,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:37,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:37,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:37,123 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:37,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:37,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:11:37,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:11:37,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:11:37,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:11:37,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (1/1) ... [2022-11-03 02:11:37,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:11:37,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:37,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:11:37,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:11:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:11:37,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:11:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:11:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:11:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:11:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:11:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:11:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:11:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:11:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:11:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:11:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:11:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_dealloc_kioc [2022-11-03 02:11:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_dealloc_kioc [2022-11-03 02:11:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:11:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:11:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_attach_buf [2022-11-03 02:11:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_attach_buf [2022-11-03 02:11:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-03 02:11:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-03 02:11:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:11:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:11:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:11:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:11:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:11:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:11:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:11:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:11:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:11:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_ioctl [2022-11-03 02:11:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_ioctl [2022-11-03 02:11:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:11:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:11:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:11:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:11:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:11:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:11:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:11:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 02:11:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 02:11:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 02:11:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 02:11:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:11:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:11:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:11:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:11:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:11:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:11:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-03 02:11:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-03 02:11:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure up [2022-11-03 02:11:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2022-11-03 02:11:37,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:11:37,260 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:11:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:11:37,261 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:11:37,261 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:11:37,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:11:37,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-03 02:11:37,263 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-03 02:11:37,759 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:11:37,767 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:11:38,182 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:11:40,027 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:11:40,387 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:11:40,388 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:11:40,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:11:40 BoogieIcfgContainer [2022-11-03 02:11:40,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:11:40,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:11:40,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:11:40,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:11:40,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:11:35" (1/3) ... [2022-11-03 02:11:40,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272c6af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:11:40, skipping insertion in model container [2022-11-03 02:11:40,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:36" (2/3) ... [2022-11-03 02:11:40,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272c6af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:11:40, skipping insertion in model container [2022-11-03 02:11:40,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:11:40" (3/3) ... [2022-11-03 02:11:40,408 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2022-11-03 02:11:40,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:11:40,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:11:40,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:11:40,501 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;@10d1031c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:11:40,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:11:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 284 states, 191 states have (on average 1.450261780104712) internal successors, (277), 199 states have internal predecessors, (277), 67 states have call successors, (67), 25 states have call predecessors, (67), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:11:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:11:40,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:40,530 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:11:40,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:40,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:40,536 INFO L85 PathProgramCache]: Analyzing trace with hash 881366556, now seen corresponding path program 1 times [2022-11-03 02:11:40,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:40,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368113416] [2022-11-03 02:11:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:40,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 02:11:41,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:41,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368113416] [2022-11-03 02:11:41,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368113416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:41,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:41,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:11:41,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064232842] [2022-11-03 02:11:41,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:41,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:11:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:41,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:11:41,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:11:41,422 INFO L87 Difference]: Start difference. First operand has 284 states, 191 states have (on average 1.450261780104712) internal successors, (277), 199 states have internal predecessors, (277), 67 states have call successors, (67), 25 states have call predecessors, (67), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:11:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:42,171 INFO L93 Difference]: Finished difference Result 552 states and 802 transitions. [2022-11-03 02:11:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:11:42,179 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2022-11-03 02:11:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:42,190 INFO L225 Difference]: With dead ends: 552 [2022-11-03 02:11:42,191 INFO L226 Difference]: Without dead ends: 277 [2022-11-03 02:11:42,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:11:42,201 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:42,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 336 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:11:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-03 02:11:42,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-11-03 02:11:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 189 states have (on average 1.417989417989418) internal successors, (268), 192 states have internal predecessors, (268), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 02:11:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 395 transitions. [2022-11-03 02:11:42,271 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 395 transitions. Word has length 132 [2022-11-03 02:11:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:42,273 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 395 transitions. [2022-11-03 02:11:42,273 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:11:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 395 transitions. [2022-11-03 02:11:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 02:11:42,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:42,282 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:11:42,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:11:42,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:42,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1740405804, now seen corresponding path program 1 times [2022-11-03 02:11:42,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:42,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075863151] [2022-11-03 02:11:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:42,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 02:11:42,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:42,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075863151] [2022-11-03 02:11:42,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075863151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:42,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:42,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:42,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682499436] [2022-11-03 02:11:42,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:42,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:42,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:42,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:42,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:42,747 INFO L87 Difference]: Start difference. First operand 277 states and 395 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:11:44,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:44,385 INFO L93 Difference]: Finished difference Result 561 states and 801 transitions. [2022-11-03 02:11:44,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:44,386 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2022-11-03 02:11:44,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:44,390 INFO L225 Difference]: With dead ends: 561 [2022-11-03 02:11:44,390 INFO L226 Difference]: Without dead ends: 299 [2022-11-03 02:11:44,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:44,394 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 43 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:44,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 633 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 02:11:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-03 02:11:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-11-03 02:11:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 208 states have (on average 1.4230769230769231) internal successors, (296), 211 states have internal predecessors, (296), 65 states have call successors, (65), 26 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:11:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 425 transitions. [2022-11-03 02:11:44,428 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 425 transitions. Word has length 133 [2022-11-03 02:11:44,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:44,429 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 425 transitions. [2022-11-03 02:11:44,429 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:11:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 425 transitions. [2022-11-03 02:11:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-03 02:11:44,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:44,438 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:11:44,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:11:44,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2131710009, now seen corresponding path program 1 times [2022-11-03 02:11:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:44,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105921237] [2022-11-03 02:11:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:44,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 02:11:45,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:45,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105921237] [2022-11-03 02:11:45,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105921237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:45,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:45,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:11:45,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712674831] [2022-11-03 02:11:45,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:11:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:11:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:11:45,406 INFO L87 Difference]: Start difference. First operand 299 states and 425 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:11:47,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:47,644 INFO L93 Difference]: Finished difference Result 582 states and 829 transitions. [2022-11-03 02:11:47,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:11:47,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 167 [2022-11-03 02:11:47,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:47,648 INFO L225 Difference]: With dead ends: 582 [2022-11-03 02:11:47,648 INFO L226 Difference]: Without dead ends: 299 [2022-11-03 02:11:47,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:47,651 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:47,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 982 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:11:47,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-03 02:11:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-11-03 02:11:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 208 states have (on average 1.4182692307692308) internal successors, (295), 211 states have internal predecessors, (295), 65 states have call successors, (65), 26 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:11:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 424 transitions. [2022-11-03 02:11:47,675 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 424 transitions. Word has length 167 [2022-11-03 02:11:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:47,676 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 424 transitions. [2022-11-03 02:11:47,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:11:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 424 transitions. [2022-11-03 02:11:47,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 02:11:47,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:47,681 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:11:47,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:11:47,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:47,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:47,682 INFO L85 PathProgramCache]: Analyzing trace with hash 384185803, now seen corresponding path program 1 times [2022-11-03 02:11:47,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:47,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83151224] [2022-11-03 02:11:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:47,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 02:11:48,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:48,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83151224] [2022-11-03 02:11:48,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83151224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:48,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:48,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:11:48,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186685018] [2022-11-03 02:11:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:48,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:11:48,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:11:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:11:48,590 INFO L87 Difference]: Start difference. First operand 299 states and 424 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 02:11:50,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:51,476 INFO L93 Difference]: Finished difference Result 653 states and 931 transitions. [2022-11-03 02:11:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:11:51,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 174 [2022-11-03 02:11:51,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:51,481 INFO L225 Difference]: With dead ends: 653 [2022-11-03 02:11:51,481 INFO L226 Difference]: Without dead ends: 372 [2022-11-03 02:11:51,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:11:51,491 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 183 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:51,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1206 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 02:11:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-03 02:11:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 359. [2022-11-03 02:11:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 262 states have (on average 1.4351145038167938) internal successors, (376), 265 states have internal predecessors, (376), 67 states have call successors, (67), 30 states have call predecessors, (67), 29 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-03 02:11:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 509 transitions. [2022-11-03 02:11:51,559 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 509 transitions. Word has length 174 [2022-11-03 02:11:51,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:51,560 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 509 transitions. [2022-11-03 02:11:51,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 02:11:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 509 transitions. [2022-11-03 02:11:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 02:11:51,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:51,568 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:11:51,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:11:51,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:51,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1756165110, now seen corresponding path program 1 times [2022-11-03 02:11:51,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:51,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879735918] [2022-11-03 02:11:51,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:51,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 02:11:52,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:52,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879735918] [2022-11-03 02:11:52,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879735918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:52,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:52,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:52,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703352737] [2022-11-03 02:11:52,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:52,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:52,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:52,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:52,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:52,038 INFO L87 Difference]: Start difference. First operand 359 states and 509 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:11:54,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:54,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:54,148 INFO L93 Difference]: Finished difference Result 711 states and 1019 transitions. [2022-11-03 02:11:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:54,149 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 183 [2022-11-03 02:11:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:54,154 INFO L225 Difference]: With dead ends: 711 [2022-11-03 02:11:54,155 INFO L226 Difference]: Without dead ends: 370 [2022-11-03 02:11:54,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:54,163 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 8 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:54,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 667 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 02:11:54,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-03 02:11:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 360. [2022-11-03 02:11:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 263 states have (on average 1.4334600760456273) internal successors, (377), 266 states have internal predecessors, (377), 67 states have call successors, (67), 30 states have call predecessors, (67), 29 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-03 02:11:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2022-11-03 02:11:54,212 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 183 [2022-11-03 02:11:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:54,220 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2022-11-03 02:11:54,220 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:11:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2022-11-03 02:11:54,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-03 02:11:54,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:54,227 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:11:54,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:11:54,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:54,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:54,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1581984749, now seen corresponding path program 1 times [2022-11-03 02:11:54,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:54,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655245318] [2022-11-03 02:11:54,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:54,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 02:11:54,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:54,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655245318] [2022-11-03 02:11:54,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655245318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:11:54,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842764029] [2022-11-03 02:11:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:54,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:11:54,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:54,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:11:54,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:11:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:55,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 2256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:11:55,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:11:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-03 02:11:55,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:11:55,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842764029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:55,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:11:55,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 02:11:55,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554075663] [2022-11-03 02:11:55,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:55,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:55,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:55,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:55,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:55,579 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:11:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:57,403 INFO L93 Difference]: Finished difference Result 708 states and 1013 transitions. [2022-11-03 02:11:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:57,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 185 [2022-11-03 02:11:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:57,407 INFO L225 Difference]: With dead ends: 708 [2022-11-03 02:11:57,408 INFO L226 Difference]: Without dead ends: 366 [2022-11-03 02:11:57,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:57,411 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 2 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:57,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 651 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 02:11:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-03 02:11:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2022-11-03 02:11:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 267 states have (on average 1.4344569288389513) internal successors, (383), 270 states have internal predecessors, (383), 67 states have call successors, (67), 30 states have call predecessors, (67), 29 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-03 02:11:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 516 transitions. [2022-11-03 02:11:57,437 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 516 transitions. Word has length 185 [2022-11-03 02:11:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:57,438 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 516 transitions. [2022-11-03 02:11:57,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:11:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 516 transitions. [2022-11-03 02:11:57,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-03 02:11:57,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:57,443 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:57,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:11:57,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:11:57,671 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:57,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:57,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1299304133, now seen corresponding path program 1 times [2022-11-03 02:11:57,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:57,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441277190] [2022-11-03 02:11:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:57,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-03 02:11:58,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:58,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441277190] [2022-11-03 02:11:58,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441277190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:11:58,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007842347] [2022-11-03 02:11:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:58,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:11:58,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:58,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:11:58,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:11:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:58,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 2307 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:11:58,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:11:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 02:11:59,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:11:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-03 02:11:59,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007842347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:11:59,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2087077072] [2022-11-03 02:11:59,359 INFO L159 IcfgInterpreter]: Started Sifa with 119 locations of interest [2022-11-03 02:11:59,359 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:11:59,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:11:59,372 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:11:59,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:12:00,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:00,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:00,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:00,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:00,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:00,579 INFO L244 Elim1Store]: Index analysis took 316 ms [2022-11-03 02:12:21,271 WARN L234 SmtUtils]: Spent 20.65s on a formula simplification. DAG size of input: 1377 DAG size of output: 604 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:12:21,286 INFO L356 Elim1Store]: treesize reduction 5116, result has 17.3 percent of original size [2022-11-03 02:12:21,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 49 select indices, 49 select index equivalence classes, 956 disjoint index pairs (out of 1176 index pairs), introduced 49 new quantified variables, introduced 270 case distinctions, treesize of input 304 treesize of output 1273 [2022-11-03 02:12:22,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 43 select indices, 43 select index equivalence classes, 1133 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 370 [2022-11-03 02:12:22,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:22,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 58 select indices, 58 select index equivalence classes, 521 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 534 treesize of output 693 [2022-11-03 02:12:23,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:23,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 58 select indices, 58 select index equivalence classes, 521 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 540 treesize of output 699 [2022-11-03 02:12:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:12:24,888 INFO L244 Elim1Store]: Index analysis took 215 ms [2022-11-03 02:12:24,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 93 select indices, 93 select index equivalence classes, 961 disjoint index pairs (out of 4278 index pairs), introduced 93 new quantified variables, introduced 0 case distinctions, treesize of input 829 treesize of output 1097 [2022-11-03 02:12:34,703 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 1467 for LOIs [2022-11-03 02:12:47,670 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 1467 for LOIs [2022-11-03 02:12:51,673 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:13:26,134 WARN L234 SmtUtils]: Spent 34.31s on a formula simplification. DAG size of input: 1463 DAG size of output: 1035 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:14:14,025 WARN L234 SmtUtils]: Spent 47.62s on a formula simplification. DAG size of input: 1467 DAG size of output: 1385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:05,572 WARN L234 SmtUtils]: Spent 51.27s on a formula simplification. DAG size of input: 1475 DAG size of output: 1393 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:15:56,618 WARN L234 SmtUtils]: Spent 50.53s on a formula simplification. DAG size of input: 1467 DAG size of output: 1385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:43,049 WARN L234 SmtUtils]: Spent 45.91s on a formula simplification. DAG size of input: 1469 DAG size of output: 1387 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:43,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2087077072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:43,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:16:43,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 12 [2022-11-03 02:16:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318422253] [2022-11-03 02:16:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:43,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:16:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:43,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:16:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:16:43,202 INFO L87 Difference]: Start difference. First operand 364 states and 516 transitions. Second operand has 7 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 1 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:16:49,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:49,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:49,549 INFO L93 Difference]: Finished difference Result 730 states and 1037 transitions. [2022-11-03 02:16:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:16:49,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 1 states have call predecessors, (22), 3 states have call successors, (22) Word has length 190 [2022-11-03 02:16:49,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:49,556 INFO L225 Difference]: With dead ends: 730 [2022-11-03 02:16:49,556 INFO L226 Difference]: Without dead ends: 368 [2022-11-03 02:16:49,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 557 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 231.5s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:16:49,559 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1015 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:49,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1107 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 1015 Unchecked, 6.2s Time] [2022-11-03 02:16:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-03 02:16:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-11-03 02:16:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 270 states have (on average 1.4296296296296296) internal successors, (386), 272 states have internal predecessors, (386), 68 states have call successors, (68), 32 states have call predecessors, (68), 29 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-03 02:16:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 521 transitions. [2022-11-03 02:16:49,635 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 521 transitions. Word has length 190 [2022-11-03 02:16:49,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:49,636 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 521 transitions. [2022-11-03 02:16:49,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 1 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:16:49,636 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 521 transitions. [2022-11-03 02:16:49,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-03 02:16:49,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:49,642 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:16:49,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:49,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:49,858 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:49,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:49,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2029326023, now seen corresponding path program 1 times [2022-11-03 02:16:49,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:49,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739997784] [2022-11-03 02:16:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:49,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-03 02:16:50,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:50,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739997784] [2022-11-03 02:16:50,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739997784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:50,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639058045] [2022-11-03 02:16:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:50,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:50,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:50,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:50,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:16:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:51,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 2342 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:16:51,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-03 02:16:51,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-03 02:16:51,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639058045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:51,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2121200891] [2022-11-03 02:16:51,545 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2022-11-03 02:16:51,545 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:16:51,546 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:16:51,546 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:16:51,546 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:16:52,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:52,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:52,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:52,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:52,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:52,317 INFO L244 Elim1Store]: Index analysis took 300 ms [2022-11-03 02:17:14,450 WARN L234 SmtUtils]: Spent 22.11s on a formula simplification. DAG size of input: 1377 DAG size of output: 604 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:17:14,452 INFO L356 Elim1Store]: treesize reduction 5116, result has 17.3 percent of original size [2022-11-03 02:17:14,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 49 select indices, 49 select index equivalence classes, 956 disjoint index pairs (out of 1176 index pairs), introduced 49 new quantified variables, introduced 270 case distinctions, treesize of input 304 treesize of output 1273 [2022-11-03 02:17:15,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 58 select indices, 58 select index equivalence classes, 521 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 540 treesize of output 699 [2022-11-03 02:17:15,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:15,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 43 select indices, 43 select index equivalence classes, 1133 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 370 [2022-11-03 02:17:16,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:16,322 INFO L244 Elim1Store]: Index analysis took 126 ms [2022-11-03 02:17:16,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 93 select indices, 93 select index equivalence classes, 961 disjoint index pairs (out of 4278 index pairs), introduced 93 new quantified variables, introduced 0 case distinctions, treesize of input 829 treesize of output 1097 [2022-11-03 02:17:17,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:17,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 58 select indices, 58 select index equivalence classes, 521 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 534 treesize of output 693 [2022-11-03 02:17:20,442 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 02:17:20,452 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 02:17:20,456 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 02:17:20,496 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:17:20,497 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 51 treesize of output 54 [2022-11-03 02:17:20,520 INFO L356 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-03 02:17:20,520 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 49 treesize of output 52 [2022-11-03 02:17:20,542 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:17:20,542 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 02:17:20,594 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 02:17:20,599 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 02:17:20,604 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 02:17:22,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 58 select indices, 58 select index equivalence classes, 516 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 519 treesize of output 175 [2022-11-03 02:17:22,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:22,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 58 select indices, 58 select index equivalence classes, 516 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 525 treesize of output 181 [2022-11-03 02:17:23,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:23,438 INFO L244 Elim1Store]: Index analysis took 135 ms [2022-11-03 02:17:23,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 93 select indices, 93 select index equivalence classes, 961 disjoint index pairs (out of 4278 index pairs), introduced 93 new quantified variables, introduced 0 case distinctions, treesize of input 827 treesize of output 285 [2022-11-03 02:17:28,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,268 INFO L244 Elim1Store]: Index analysis took 120 ms [2022-11-03 02:17:28,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 93 select indices, 93 select index equivalence classes, 961 disjoint index pairs (out of 4278 index pairs), introduced 93 new quantified variables, introduced 0 case distinctions, treesize of input 827 treesize of output 285 [2022-11-03 02:17:28,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 58 select indices, 58 select index equivalence classes, 516 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 525 treesize of output 181 [2022-11-03 02:17:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:28,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 58 select indices, 58 select index equivalence classes, 516 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 519 treesize of output 175 [2022-11-03 02:17:56,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:56,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:56,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:56,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:56,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:56,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:57,775 INFO L356 Elim1Store]: treesize reduction 486, result has 45.6 percent of original size [2022-11-03 02:17:57,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 48 select indices, 48 select index equivalence classes, 1135 disjoint index pairs (out of 1128 index pairs), introduced 48 new quantified variables, introduced 47 case distinctions, treesize of input 247 treesize of output 562 [2022-11-03 02:17:58,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:58,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:58,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:58,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:58,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:58,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:17:58,753 INFO L244 Elim1Store]: Index analysis took 116 ms [2022-11-03 02:18:01,123 INFO L356 Elim1Store]: treesize reduction 846, result has 33.4 percent of original size [2022-11-03 02:18:01,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 50 select indices, 50 select index equivalence classes, 1178 disjoint index pairs (out of 1225 index pairs), introduced 50 new quantified variables, introduced 94 case distinctions, treesize of input 257 treesize of output 589 [2022-11-03 02:18:04,465 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 02:18:04,470 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 02:18:04,477 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 02:18:05,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 49 select indices, 49 select index equivalence classes, 1182 disjoint index pairs (out of 1176 index pairs), introduced 49 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 148 [2022-11-03 02:18:05,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:05,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 50 select indices, 50 select index equivalence classes, 1225 disjoint index pairs (out of 1225 index pairs), introduced 50 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 151 [2022-11-03 02:18:09,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 49 select indices, 49 select index equivalence classes, 1182 disjoint index pairs (out of 1176 index pairs), introduced 49 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 148 [2022-11-03 02:18:09,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:18:09,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 50 select indices, 50 select index equivalence classes, 1225 disjoint index pairs (out of 1225 index pairs), introduced 50 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 151 [2022-11-03 02:19:04,064 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 02:19:04,138 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 02:19:04,203 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 02:19:04,855 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:19:04,862 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:19:04,865 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:19:49,698 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 02:19:49,793 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 02:19:50,005 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 02:19:50,469 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:19:50,475 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:19:50,498 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:20:40,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 02:20:41,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:41,151 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.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) 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 02:20:41,154 INFO L158 Benchmark]: Toolchain (without parser) took 546128.98ms. Allocated memory was 94.4MB in the beginning and 650.1MB in the end (delta: 555.7MB). Free memory was 65.5MB in the beginning and 455.0MB in the end (delta: -389.5MB). Peak memory consumption was 449.2MB. Max. memory is 16.1GB. [2022-11-03 02:20:41,155 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:20:41,155 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1702.80ms. Allocated memory was 94.4MB in the beginning and 134.2MB in the end (delta: 39.8MB). Free memory was 65.2MB in the beginning and 64.6MB in the end (delta: 657.5kB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2022-11-03 02:20:41,155 INFO L158 Benchmark]: Boogie Procedure Inliner took 218.80ms. Allocated memory is still 134.2MB. Free memory was 64.6MB in the beginning and 86.6MB in the end (delta: -22.1MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-11-03 02:20:41,155 INFO L158 Benchmark]: Boogie Preprocessor took 194.29ms. Allocated memory is still 134.2MB. Free memory was 86.6MB in the beginning and 76.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:20:41,156 INFO L158 Benchmark]: RCFGBuilder took 3250.64ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 76.2MB in the beginning and 117.2MB in the end (delta: -41.1MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2022-11-03 02:20:41,156 INFO L158 Benchmark]: TraceAbstraction took 540753.45ms. Allocated memory was 195.0MB in the beginning and 650.1MB in the end (delta: 455.1MB). Free memory was 117.2MB in the beginning and 455.0MB in the end (delta: -337.8MB). Peak memory consumption was 400.5MB. Max. memory is 16.1GB. [2022-11-03 02:20:41,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1702.80ms. Allocated memory was 94.4MB in the beginning and 134.2MB in the end (delta: 39.8MB). Free memory was 65.2MB in the beginning and 64.6MB in the end (delta: 657.5kB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 218.80ms. Allocated memory is still 134.2MB. Free memory was 64.6MB in the beginning and 86.6MB in the end (delta: -22.1MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 194.29ms. Allocated memory is still 134.2MB. Free memory was 86.6MB in the beginning and 76.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 3250.64ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 76.2MB in the beginning and 117.2MB in the end (delta: -41.1MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. * TraceAbstraction took 540753.45ms. Allocated memory was 195.0MB in the beginning and 650.1MB in the end (delta: 455.1MB). Free memory was 117.2MB in the beginning and 455.0MB in the end (delta: -337.8MB). Peak memory consumption was 400.5MB. 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 02:20:41,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/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_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/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_3c71829c-210c-4c48-a418-a84f6b5811aa/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 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 --- 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 02:20:43,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:20:43,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:20:43,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:20:43,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:20:43,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:20:43,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:20:43,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:20:43,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:20:43,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:20:43,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:20:43,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:20:43,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:20:43,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:20:43,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:20:43,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:20:43,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:20:43,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:20:43,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:20:43,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:20:43,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:20:43,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:20:43,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:20:43,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:20:43,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:20:43,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:20:43,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:20:43,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:20:43,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:20:43,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:20:43,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:20:43,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:20:43,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:20:43,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:20:43,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:20:43,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:20:43,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:20:43,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:20:43,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:20:43,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:20:43,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:20:43,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:20:43,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:20:43,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:20:43,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:20:43,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:20:43,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:20:43,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:20:43,744 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:20:43,744 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:20:43,744 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:20:43,745 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:20:43,745 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:20:43,745 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:20:43,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:20:43,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:20:43,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:20:43,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:20:43,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:20:43,747 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:20:43,747 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:20:43,748 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:20:43,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:20:43,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:20:43,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:20:43,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:20:43,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:20:43,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:20:43,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:43,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:20:43,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:20:43,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:20:43,750 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:20:43,751 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:20:43,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:20:43,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:20:43,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:20:43,752 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_3c71829c-210c-4c48-a418-a84f6b5811aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 [2022-11-03 02:20:44,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:20:44,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:20:44,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:20:44,179 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:20:44,180 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:20:44,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2022-11-03 02:20:44,265 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/data/630cfe606/51ec7a319af04889a85f381256ba18cd/FLAGa8475701a [2022-11-03 02:20:45,219 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:20:45,220 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2022-11-03 02:20:45,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/data/630cfe606/51ec7a319af04889a85f381256ba18cd/FLAGa8475701a [2022-11-03 02:20:45,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/data/630cfe606/51ec7a319af04889a85f381256ba18cd [2022-11-03 02:20:45,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:20:45,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:20:45,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:45,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:20:45,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:20:45,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:45" (1/1) ... [2022-11-03 02:20:45,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63aa2979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:45, skipping insertion in model container [2022-11-03 02:20:45,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:45" (1/1) ... [2022-11-03 02:20:45,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:20:45,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:20:47,014 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_3c71829c-210c-4c48-a418-a84f6b5811aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2022-11-03 02:20:47,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:47,139 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 02:20:47,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:20:47,447 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_3c71829c-210c-4c48-a418-a84f6b5811aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2022-11-03 02:20:47,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:47,482 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:20:47,764 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_3c71829c-210c-4c48-a418-a84f6b5811aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2022-11-03 02:20:47,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:47,851 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:20:47,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47 WrapperNode [2022-11-03 02:20:47,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:47,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:47,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:20:47,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:20:47,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:47,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:48,047 INFO L138 Inliner]: procedures = 153, calls = 843, calls flagged for inlining = 61, calls inlined = 52, statements flattened = 1694 [2022-11-03 02:20:48,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:48,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:20:48,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:20:48,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:20:48,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:48,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:48,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:48,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:48,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:48,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:48,137 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:48,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:48,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:20:48,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:20:48,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:20:48,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:20:48,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (1/1) ... [2022-11-03 02:20:48,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:48,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:48,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:20:48,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:20:48,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 02:20:48,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 02:20:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:20:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:20:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 02:20:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:20:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:20:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:20:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:20:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:20:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:20:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:20:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:20:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:20:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_dealloc_kioc [2022-11-03 02:20:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_dealloc_kioc [2022-11-03 02:20:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:20:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:20:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_attach_buf [2022-11-03 02:20:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_attach_buf [2022-11-03 02:20:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-03 02:20:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-03 02:20:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:20:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:20:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:20:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:20:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 02:20:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 02:20:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 02:20:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 02:20:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:20:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:20:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:20:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:20:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_ioctl [2022-11-03 02:20:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_ioctl [2022-11-03 02:20:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:20:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:20:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:20:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:20:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:20:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:20:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:20:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 02:20:48,262 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 02:20:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 02:20:48,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 02:20:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:20:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:20:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:20:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:20:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:20:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 02:20:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:20:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 02:20:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-03 02:20:48,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-03 02:20:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 02:20:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure up [2022-11-03 02:20:48,264 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2022-11-03 02:20:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:20:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:20:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:20:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:20:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:20:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 02:20:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 02:20:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 02:20:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:20:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:20:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:20:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-03 02:20:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:20:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 02:20:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 02:20:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:20:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:20:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 02:20:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:20:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:20:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-03 02:20:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-03 02:20:48,823 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:20:48,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:20:48,998 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:21:07,483 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:21:07,504 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:21:07,505 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:21:07,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:07 BoogieIcfgContainer [2022-11-03 02:21:07,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:21:07,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:21:07,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:21:07,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:21:07,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:20:45" (1/3) ... [2022-11-03 02:21:07,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53546ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:07, skipping insertion in model container [2022-11-03 02:21:07,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:47" (2/3) ... [2022-11-03 02:21:07,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53546ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:07, skipping insertion in model container [2022-11-03 02:21:07,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:07" (3/3) ... [2022-11-03 02:21:07,521 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2022-11-03 02:21:07,541 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:21:07,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:21:07,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:21:07,654 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;@1e852e2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:21:07,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:21:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 403 states, 310 states have (on average 1.403225806451613) internal successors, (435), 318 states have internal predecessors, (435), 67 states have call successors, (67), 25 states have call predecessors, (67), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:21:07,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-03 02:21:07,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:07,684 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:21:07,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:07,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:07,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1387117955, now seen corresponding path program 1 times [2022-11-03 02:21:07,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:07,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893180183] [2022-11-03 02:21:07,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:07,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:07,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:07,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:07,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:21:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:09,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:21:09,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-03 02:21:09,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:09,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:09,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893180183] [2022-11-03 02:21:09,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893180183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:09,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:09,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:21:09,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156050882] [2022-11-03 02:21:09,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:09,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:21:09,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:21:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:21:09,266 INFO L87 Difference]: Start difference. First operand has 403 states, 310 states have (on average 1.403225806451613) internal successors, (435), 318 states have internal predecessors, (435), 67 states have call successors, (67), 25 states have call predecessors, (67), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:21:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:09,381 INFO L93 Difference]: Finished difference Result 786 states and 1119 transitions. [2022-11-03 02:21:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:21:09,387 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 178 [2022-11-03 02:21:09,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:09,400 INFO L225 Difference]: With dead ends: 786 [2022-11-03 02:21:09,400 INFO L226 Difference]: Without dead ends: 387 [2022-11-03 02:21:09,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 177 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 02:21:09,411 INFO L413 NwaCegarLoop]: 560 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, 560 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 02:21:09,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-03 02:21:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-11-03 02:21:09,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 299 states have (on average 1.3846153846153846) internal successors, (414), 302 states have internal predecessors, (414), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 02:21:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 541 transitions. [2022-11-03 02:21:09,484 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 541 transitions. Word has length 178 [2022-11-03 02:21:09,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:09,486 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 541 transitions. [2022-11-03 02:21:09,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:21:09,487 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 541 transitions. [2022-11-03 02:21:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-03 02:21:09,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:09,493 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:21:09,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:09,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:09,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:09,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:09,708 INFO L85 PathProgramCache]: Analyzing trace with hash 89143733, now seen corresponding path program 1 times [2022-11-03 02:21:09,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:09,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667030209] [2022-11-03 02:21:09,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:09,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:09,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:09,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:09,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:21:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:11,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:21:11,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 02:21:11,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:11,321 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:11,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667030209] [2022-11-03 02:21:11,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667030209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:11,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:11,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:11,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849037] [2022-11-03 02:21:11,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:11,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:11,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:11,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:11,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:11,326 INFO L87 Difference]: Start difference. First operand 387 states and 541 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:21:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:11,679 INFO L93 Difference]: Finished difference Result 776 states and 1092 transitions. [2022-11-03 02:21:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:21:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 179 [2022-11-03 02:21:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:11,685 INFO L225 Difference]: With dead ends: 776 [2022-11-03 02:21:11,685 INFO L226 Difference]: Without dead ends: 388 [2022-11-03 02:21:11,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:11,693 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 6 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:11,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2644 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-03 02:21:11,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2022-11-03 02:21:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 300 states have (on average 1.3833333333333333) internal successors, (415), 303 states have internal predecessors, (415), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 02:21:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 542 transitions. [2022-11-03 02:21:11,762 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 542 transitions. Word has length 179 [2022-11-03 02:21:11,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:11,762 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 542 transitions. [2022-11-03 02:21:11,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:21:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 542 transitions. [2022-11-03 02:21:11,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-03 02:21:11,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:11,766 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:21:11,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:11,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:11,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash 698231891, now seen corresponding path program 1 times [2022-11-03 02:21:11,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:11,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149916426] [2022-11-03 02:21:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:11,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:11,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:11,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:12,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:21:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:13,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:13,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-03 02:21:13,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-03 02:21:14,237 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:14,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149916426] [2022-11-03 02:21:14,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149916426] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:14,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [103590311] [2022-11-03 02:21:14,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:14,238 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:14,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:21:14,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:21:14,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-03 02:21:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:15,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:15,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-03 02:21:15,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:15,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [103590311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:15,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:21:15,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 02:21:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31463909] [2022-11-03 02:21:15,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:15,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:15,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:15,406 INFO L87 Difference]: Start difference. First operand 388 states and 542 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:21:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:15,586 INFO L93 Difference]: Finished difference Result 789 states and 1103 transitions. [2022-11-03 02:21:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:15,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 184 [2022-11-03 02:21:15,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:15,590 INFO L225 Difference]: With dead ends: 789 [2022-11-03 02:21:15,591 INFO L226 Difference]: Without dead ends: 419 [2022-11-03 02:21:15,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:15,597 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 56 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:15,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1041 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-11-03 02:21:15,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 416. [2022-11-03 02:21:15,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 325 states have (on average 1.3846153846153846) internal successors, (450), 328 states have internal predecessors, (450), 65 states have call successors, (65), 26 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:21:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 579 transitions. [2022-11-03 02:21:15,635 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 579 transitions. Word has length 184 [2022-11-03 02:21:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:15,636 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 579 transitions. [2022-11-03 02:21:15,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:21:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 579 transitions. [2022-11-03 02:21:15,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-03 02:21:15,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:15,644 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:15,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:15,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2022-11-03 02:21:16,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:16,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:16,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1347935982, now seen corresponding path program 1 times [2022-11-03 02:21:16,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:16,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334586025] [2022-11-03 02:21:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:16,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:16,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:16,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:16,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:21:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:17,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:17,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:21:17,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-03 02:21:18,262 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:18,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334586025] [2022-11-03 02:21:18,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334586025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:18,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1417213648] [2022-11-03 02:21:18,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:18,262 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:18,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:21:18,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:21:18,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-03 02:21:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:19,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:19,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-03 02:21:19,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:19,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1417213648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:19,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:21:19,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 02:21:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085693916] [2022-11-03 02:21:19,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:19,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:19,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:19,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:19,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:19,426 INFO L87 Difference]: Start difference. First operand 416 states and 579 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:21:19,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:19,480 INFO L93 Difference]: Finished difference Result 810 states and 1134 transitions. [2022-11-03 02:21:19,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:19,482 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 230 [2022-11-03 02:21:19,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:19,486 INFO L225 Difference]: With dead ends: 810 [2022-11-03 02:21:19,486 INFO L226 Difference]: Without dead ends: 417 [2022-11-03 02:21:19,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:19,489 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 0 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:19,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1075 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-03 02:21:19,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-11-03 02:21:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 326 states have (on average 1.383435582822086) internal successors, (451), 329 states have internal predecessors, (451), 65 states have call successors, (65), 26 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:21:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 580 transitions. [2022-11-03 02:21:19,515 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 580 transitions. Word has length 230 [2022-11-03 02:21:19,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:19,517 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 580 transitions. [2022-11-03 02:21:19,517 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:21:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 580 transitions. [2022-11-03 02:21:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-03 02:21:19,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:19,524 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:19,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:19,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:19,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:19,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:19,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:19,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1809653398, now seen corresponding path program 1 times [2022-11-03 02:21:19,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:19,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849060486] [2022-11-03 02:21:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:19,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:19,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:19,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:19,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:21:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:21,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:21,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:21:21,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-03 02:21:22,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:22,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849060486] [2022-11-03 02:21:22,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849060486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:22,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1919002708] [2022-11-03 02:21:22,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:22,040 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:22,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:21:22,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:21:22,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-03 02:21:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:23,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:23,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-03 02:21:23,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:23,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1919002708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:23,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:21:23,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 02:21:23,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247326067] [2022-11-03 02:21:23,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:23,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:23,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:23,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:23,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:23,252 INFO L87 Difference]: Start difference. First operand 417 states and 580 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:21:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:23,311 INFO L93 Difference]: Finished difference Result 819 states and 1151 transitions. [2022-11-03 02:21:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:23,315 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 230 [2022-11-03 02:21:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:23,320 INFO L225 Difference]: With dead ends: 819 [2022-11-03 02:21:23,320 INFO L226 Difference]: Without dead ends: 425 [2022-11-03 02:21:23,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:23,323 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 7 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:23,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1074 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-11-03 02:21:23,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 423. [2022-11-03 02:21:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 332 states have (on average 1.3825301204819278) internal successors, (459), 335 states have internal predecessors, (459), 65 states have call successors, (65), 26 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:21:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 588 transitions. [2022-11-03 02:21:23,343 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 588 transitions. Word has length 230 [2022-11-03 02:21:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:23,344 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 588 transitions. [2022-11-03 02:21:23,344 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:21:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 588 transitions. [2022-11-03 02:21:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-03 02:21:23,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:23,350 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:23,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:23,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:23,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:23,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:23,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:23,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1456863507, now seen corresponding path program 1 times [2022-11-03 02:21:23,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:23,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674943988] [2022-11-03 02:21:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:23,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:23,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:23,774 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:23,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:21:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:25,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:25,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-03 02:21:25,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-03 02:21:25,853 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:25,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674943988] [2022-11-03 02:21:25,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674943988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:25,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [923102500] [2022-11-03 02:21:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:25,853 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:25,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:21:25,856 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:21:25,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-03 02:21:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:27,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:27,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-11-03 02:21:27,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:27,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [923102500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:27,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:21:27,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 02:21:27,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207031197] [2022-11-03 02:21:27,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:27,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:27,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:27,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:27,271 INFO L87 Difference]: Start difference. First operand 423 states and 588 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 02:21:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:27,489 INFO L93 Difference]: Finished difference Result 868 states and 1212 transitions. [2022-11-03 02:21:27,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:27,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 248 [2022-11-03 02:21:27,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:27,494 INFO L225 Difference]: With dead ends: 868 [2022-11-03 02:21:27,494 INFO L226 Difference]: Without dead ends: 468 [2022-11-03 02:21:27,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:27,496 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 62 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:27,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1053 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-03 02:21:27,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 465. [2022-11-03 02:21:27,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 370 states have (on average 1.3810810810810812) internal successors, (511), 373 states have internal predecessors, (511), 66 states have call successors, (66), 29 states have call predecessors, (66), 28 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:21:27,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 642 transitions. [2022-11-03 02:21:27,517 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 642 transitions. Word has length 248 [2022-11-03 02:21:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:27,518 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 642 transitions. [2022-11-03 02:21:27,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 02:21:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 642 transitions. [2022-11-03 02:21:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-03 02:21:27,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:27,524 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:27,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:27,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:27,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:27,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:27,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:27,947 INFO L85 PathProgramCache]: Analyzing trace with hash -54137563, now seen corresponding path program 1 times [2022-11-03 02:21:27,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:27,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495835387] [2022-11-03 02:21:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:27,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:27,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:27,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:27,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:21:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:29,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:29,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-03 02:21:29,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-03 02:21:30,183 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:30,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495835387] [2022-11-03 02:21:30,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495835387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:30,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [284595851] [2022-11-03 02:21:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:30,184 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:30,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:21:30,186 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:21:30,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-03 02:21:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:31,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:31,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-03 02:21:31,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:31,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [284595851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:31,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:21:31,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 02:21:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026156146] [2022-11-03 02:21:31,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:31,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:31,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:31,489 INFO L87 Difference]: Start difference. First operand 465 states and 642 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:21:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:31,543 INFO L93 Difference]: Finished difference Result 1022 states and 1428 transitions. [2022-11-03 02:21:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:31,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 265 [2022-11-03 02:21:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:31,548 INFO L225 Difference]: With dead ends: 1022 [2022-11-03 02:21:31,548 INFO L226 Difference]: Without dead ends: 580 [2022-11-03 02:21:31,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:31,551 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 81 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:31,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1160 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-11-03 02:21:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 466. [2022-11-03 02:21:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 371 states have (on average 1.3800539083557952) internal successors, (512), 374 states have internal predecessors, (512), 66 states have call successors, (66), 29 states have call predecessors, (66), 28 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:21:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 643 transitions. [2022-11-03 02:21:31,578 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 643 transitions. Word has length 265 [2022-11-03 02:21:31,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:31,578 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 643 transitions. [2022-11-03 02:21:31,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:21:31,579 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 643 transitions. [2022-11-03 02:21:31,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-03 02:21:31,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:31,585 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:31,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:31,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:31,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:31,999 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:31,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:31,999 INFO L85 PathProgramCache]: Analyzing trace with hash -210118105, now seen corresponding path program 1 times [2022-11-03 02:21:32,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:32,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701059090] [2022-11-03 02:21:32,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:32,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:32,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:32,003 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:32,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:21:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:33,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:33,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-03 02:21:33,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-03 02:21:34,173 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:34,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701059090] [2022-11-03 02:21:34,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701059090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:34,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [322450157] [2022-11-03 02:21:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:34,174 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:34,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:21:34,179 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:21:34,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-03 02:21:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:35,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:35,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-03 02:21:35,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:35,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [322450157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:35,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:21:35,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 02:21:35,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567660047] [2022-11-03 02:21:35,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:35,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:35,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:35,543 INFO L87 Difference]: Start difference. First operand 466 states and 643 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:21:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:35,586 INFO L93 Difference]: Finished difference Result 912 states and 1265 transitions. [2022-11-03 02:21:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:35,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 265 [2022-11-03 02:21:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:35,591 INFO L225 Difference]: With dead ends: 912 [2022-11-03 02:21:35,591 INFO L226 Difference]: Without dead ends: 469 [2022-11-03 02:21:35,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:35,594 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 2 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:35,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1081 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-03 02:21:35,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 467. [2022-11-03 02:21:35,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 372 states have (on average 1.3790322580645162) internal successors, (513), 375 states have internal predecessors, (513), 66 states have call successors, (66), 29 states have call predecessors, (66), 28 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:21:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 644 transitions. [2022-11-03 02:21:35,614 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 644 transitions. Word has length 265 [2022-11-03 02:21:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:35,615 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 644 transitions. [2022-11-03 02:21:35,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:21:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 644 transitions. [2022-11-03 02:21:35,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-03 02:21:35,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:35,619 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:35,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:35,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:36,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:36,031 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1177117918, now seen corresponding path program 1 times [2022-11-03 02:21:36,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:36,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839263906] [2022-11-03 02:21:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:36,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:36,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:36,033 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:36,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:21:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:37,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:37,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-03 02:21:37,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-03 02:21:38,163 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:38,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839263906] [2022-11-03 02:21:38,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839263906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:38,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1145827418] [2022-11-03 02:21:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:38,164 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:38,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:21:38,165 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:21:38,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 02:21:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:39,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:21:39,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 02:21:39,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:39,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1145827418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:39,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:21:39,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 7] total 13 [2022-11-03 02:21:39,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982530242] [2022-11-03 02:21:39,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:39,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:21:39,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:39,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:21:39,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:21:39,593 INFO L87 Difference]: Start difference. First operand 467 states and 644 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:21:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:39,791 INFO L93 Difference]: Finished difference Result 913 states and 1265 transitions. [2022-11-03 02:21:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:21:39,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 266 [2022-11-03 02:21:39,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:39,794 INFO L225 Difference]: With dead ends: 913 [2022-11-03 02:21:39,795 INFO L226 Difference]: Without dead ends: 469 [2022-11-03 02:21:39,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:21:39,797 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 403 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:39,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1163 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:21:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-03 02:21:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 467. [2022-11-03 02:21:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 372 states have (on average 1.3736559139784945) internal successors, (511), 375 states have internal predecessors, (511), 66 states have call successors, (66), 29 states have call predecessors, (66), 28 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:21:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 642 transitions. [2022-11-03 02:21:39,823 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 642 transitions. Word has length 266 [2022-11-03 02:21:39,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:39,825 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 642 transitions. [2022-11-03 02:21:39,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:21:39,826 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 642 transitions. [2022-11-03 02:21:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-11-03 02:21:39,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:39,830 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:39,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:40,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:40,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:40,251 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:40,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1798505036, now seen corresponding path program 1 times [2022-11-03 02:21:40,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:40,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769549084] [2022-11-03 02:21:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:40,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:40,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:40,253 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:40,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:21:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:41,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:41,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 02:21:42,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-03 02:21:42,611 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:42,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769549084] [2022-11-03 02:21:42,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769549084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:42,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [43035007] [2022-11-03 02:21:42,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:42,612 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:42,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:21:42,613 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:21:42,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-03 02:21:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:44,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:21:44,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 45 proven. 4 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 02:21:44,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-03 02:21:44,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [43035007] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:44,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:21:44,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 7, 6] total 17 [2022-11-03 02:21:44,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339439122] [2022-11-03 02:21:44,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:21:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:21:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:21:44,782 INFO L87 Difference]: Start difference. First operand 467 states and 642 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:21:45,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:45,221 INFO L93 Difference]: Finished difference Result 917 states and 1267 transitions. [2022-11-03 02:21:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:45,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 285 [2022-11-03 02:21:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:45,226 INFO L225 Difference]: With dead ends: 917 [2022-11-03 02:21:45,227 INFO L226 Difference]: Without dead ends: 473 [2022-11-03 02:21:45,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1137 GetRequests, 1121 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:21:45,230 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 6 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:45,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1610 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:21:45,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-03 02:21:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 469. [2022-11-03 02:21:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 374 states have (on average 1.3716577540106951) internal successors, (513), 377 states have internal predecessors, (513), 66 states have call successors, (66), 29 states have call predecessors, (66), 28 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:21:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 644 transitions. [2022-11-03 02:21:45,254 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 644 transitions. Word has length 285 [2022-11-03 02:21:45,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:45,255 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 644 transitions. [2022-11-03 02:21:45,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:21:45,256 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 644 transitions. [2022-11-03 02:21:45,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-11-03 02:21:45,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:45,259 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:45,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:45,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:45,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:21:45,671 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:45,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1453343563, now seen corresponding path program 1 times [2022-11-03 02:21:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:45,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341029344] [2022-11-03 02:21:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:45,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:45,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:45,673 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:45,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:21:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:47,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:47,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 02:21:47,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-03 02:21:47,903 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:47,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341029344] [2022-11-03 02:21:47,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341029344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:47,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1382062329] [2022-11-03 02:21:47,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:47,904 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:47,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:21:47,911 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:21:47,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-03 02:21:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:49,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:49,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-03 02:21:49,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:49,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1382062329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:49,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:21:49,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 02:21:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559443287] [2022-11-03 02:21:49,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:49,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:49,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:49,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:49,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:49,519 INFO L87 Difference]: Start difference. First operand 469 states and 644 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:21:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:49,560 INFO L93 Difference]: Finished difference Result 917 states and 1265 transitions. [2022-11-03 02:21:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 291 [2022-11-03 02:21:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:49,564 INFO L225 Difference]: With dead ends: 917 [2022-11-03 02:21:49,564 INFO L226 Difference]: Without dead ends: 471 [2022-11-03 02:21:49,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:49,568 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 0 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:49,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1076 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-03 02:21:49,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2022-11-03 02:21:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 376 states have (on average 1.3696808510638299) internal successors, (515), 379 states have internal predecessors, (515), 66 states have call successors, (66), 29 states have call predecessors, (66), 28 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:21:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 646 transitions. [2022-11-03 02:21:49,592 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 646 transitions. Word has length 291 [2022-11-03 02:21:49,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:49,593 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 646 transitions. [2022-11-03 02:21:49,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:21:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 646 transitions. [2022-11-03 02:21:49,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-03 02:21:49,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:49,597 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:49,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:49,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:50,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:50,019 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:50,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash -818401699, now seen corresponding path program 1 times [2022-11-03 02:21:50,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:50,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766663865] [2022-11-03 02:21:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:50,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:50,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:50,022 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:50,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:21:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:51,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:51,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 02:21:51,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-03 02:21:52,397 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:21:52,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766663865] [2022-11-03 02:21:52,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766663865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:52,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [371215066] [2022-11-03 02:21:52,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:52,398 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:52,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:21:52,399 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:21:52,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-03 02:21:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:55,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:55,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 02:21:55,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-03 02:21:55,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [371215066] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:55,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905260615] [2022-11-03 02:21:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:55,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:55,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:55,471 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:55,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-03 02:21:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:56,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:21:56,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-03 02:21:56,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:56,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905260615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:56,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-03 02:21:56,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 7, 7] total 14 [2022-11-03 02:21:56,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130963004] [2022-11-03 02:21:56,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:56,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:56,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:21:56,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:56,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:21:56,780 INFO L87 Difference]: Start difference. First operand 471 states and 646 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:21:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:57,002 INFO L93 Difference]: Finished difference Result 922 states and 1268 transitions. [2022-11-03 02:21:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:57,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 286 [2022-11-03 02:21:57,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:57,006 INFO L225 Difference]: With dead ends: 922 [2022-11-03 02:21:57,007 INFO L226 Difference]: Without dead ends: 469 [2022-11-03 02:21:57,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1427 GetRequests, 1413 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:21:57,010 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 7 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:57,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2140 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:21:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-03 02:21:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2022-11-03 02:21:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 374 states have (on average 1.3663101604278074) internal successors, (511), 377 states have internal predecessors, (511), 66 states have call successors, (66), 29 states have call predecessors, (66), 28 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:21:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 642 transitions. [2022-11-03 02:21:57,034 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 642 transitions. Word has length 286 [2022-11-03 02:21:57,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:57,035 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 642 transitions. [2022-11-03 02:21:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:21:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 642 transitions. [2022-11-03 02:21:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-03 02:21:57,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:57,039 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:57,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:57,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:57,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:57,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:21:57,663 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:57,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash -467405553, now seen corresponding path program 1 times [2022-11-03 02:21:57,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:21:57,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010498214] [2022-11-03 02:21:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:57,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:21:57,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:21:57,667 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:21:57,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:21:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:59,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:59,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-03 02:21:59,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-03 02:22:00,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:22:00,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010498214] [2022-11-03 02:22:00,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010498214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:00,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1516578067] [2022-11-03 02:22:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:00,204 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:22:00,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:22:00,211 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:22:00,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-03 02:22:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:03,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:22:03,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-03 02:22:03,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-03 02:22:03,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1516578067] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:03,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000684350] [2022-11-03 02:22:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:03,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:03,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:03,482 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:03,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-03 02:22:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:04,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:22:04,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-11-03 02:22:04,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:22:04,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000684350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:04,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-03 02:22:04,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 7, 7, 7] total 13 [2022-11-03 02:22:04,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912169033] [2022-11-03 02:22:04,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:04,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:22:04,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:22:04,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:22:04,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:22:04,889 INFO L87 Difference]: Start difference. First operand 469 states and 642 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:22:05,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:05,020 INFO L93 Difference]: Finished difference Result 917 states and 1261 transitions. [2022-11-03 02:22:05,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:22:05,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 294 [2022-11-03 02:22:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:05,024 INFO L225 Difference]: With dead ends: 917 [2022-11-03 02:22:05,024 INFO L226 Difference]: Without dead ends: 471 [2022-11-03 02:22:05,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1454 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:22:05,027 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:05,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1592 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 3 Unchecked, 0.1s Time] [2022-11-03 02:22:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-03 02:22:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2022-11-03 02:22:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 376 states have (on average 1.3643617021276595) internal successors, (513), 379 states have internal predecessors, (513), 66 states have call successors, (66), 29 states have call predecessors, (66), 28 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:22:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 644 transitions. [2022-11-03 02:22:05,048 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 644 transitions. Word has length 294 [2022-11-03 02:22:05,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:05,049 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 644 transitions. [2022-11-03 02:22:05,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:22:05,049 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 644 transitions. [2022-11-03 02:22:05,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-11-03 02:22:05,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:05,052 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:05,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:05,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:05,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:05,679 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1412184386, now seen corresponding path program 1 times [2022-11-03 02:22:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:22:05,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317021782] [2022-11-03 02:22:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:05,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:22:05,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:22:05,681 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:22:05,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:22:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:07,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:22:07,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 02:22:07,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-03 02:22:08,097 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:22:08,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317021782] [2022-11-03 02:22:08,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317021782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:08,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [636481002] [2022-11-03 02:22:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:08,097 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:22:08,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:22:08,098 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:22:08,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-03 02:22:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:10,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:22:10,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 02:22:11,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-03 02:22:11,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [636481002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:11,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005274143] [2022-11-03 02:22:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:11,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:11,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:11,383 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:11,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-03 02:22:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:12,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:22:12,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-03 02:22:12,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-03 02:22:13,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005274143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:13,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:22:13,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 4, 4] total 15 [2022-11-03 02:22:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545565405] [2022-11-03 02:22:13,084 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:22:13,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:22:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:22:13,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:22:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:22:13,086 INFO L87 Difference]: Start difference. First operand 471 states and 644 transitions. Second operand has 15 states, 13 states have (on average 21.53846153846154) internal successors, (280), 15 states have internal predecessors, (280), 6 states have call successors, (71), 2 states have call predecessors, (71), 5 states have return successors, (67), 6 states have call predecessors, (67), 6 states have call successors, (67) [2022-11-03 02:22:15,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:17,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:17,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:17,725 INFO L93 Difference]: Finished difference Result 992 states and 1373 transitions. [2022-11-03 02:22:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:22:17,727 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 21.53846153846154) internal successors, (280), 15 states have internal predecessors, (280), 6 states have call successors, (71), 2 states have call predecessors, (71), 5 states have return successors, (67), 6 states have call predecessors, (67), 6 states have call successors, (67) Word has length 291 [2022-11-03 02:22:17,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:17,730 INFO L225 Difference]: With dead ends: 992 [2022-11-03 02:22:17,730 INFO L226 Difference]: Without dead ends: 518 [2022-11-03 02:22:17,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1744 GetRequests, 1727 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:22:17,733 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 49 mSDsluCounter, 4243 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:17,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4784 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 211 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 02:22:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-03 02:22:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2022-11-03 02:22:17,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 415 states have (on average 1.3542168674698796) internal successors, (562), 420 states have internal predecessors, (562), 73 states have call successors, (73), 30 states have call predecessors, (73), 29 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-03 02:22:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 707 transitions. [2022-11-03 02:22:17,792 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 707 transitions. Word has length 291 [2022-11-03 02:22:17,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:17,792 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 707 transitions. [2022-11-03 02:22:17,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 21.53846153846154) internal successors, (280), 15 states have internal predecessors, (280), 6 states have call successors, (71), 2 states have call predecessors, (71), 5 states have return successors, (67), 6 states have call predecessors, (67), 6 states have call successors, (67) [2022-11-03 02:22:17,793 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 707 transitions. [2022-11-03 02:22:17,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-03 02:22:17,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:17,797 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-03 02:22:17,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:18,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:18,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-03 02:22:18,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:22:18,411 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:18,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1715107946, now seen corresponding path program 1 times [2022-11-03 02:22:18,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:22:18,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329739959] [2022-11-03 02:22:18,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:18,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:22:18,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:22:18,414 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:22:18,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 02:22:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:20,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:22:20,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 68 proven. 3 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-03 02:22:20,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-03 02:22:21,085 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:22:21,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329739959] [2022-11-03 02:22:21,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329739959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:21,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [355322529] [2022-11-03 02:22:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:21,086 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:22:21,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:22:21,091 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:22:21,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-03 02:22:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:24,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:22:24,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 68 proven. 3 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-03 02:22:24,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-03 02:22:24,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [355322529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:24,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557086036] [2022-11-03 02:22:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:24,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:24,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:24,779 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:24,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-03 02:22:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:26,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:22:26,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-11-03 02:22:26,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-11-03 02:22:26,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557086036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:26,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:22:26,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 4, 4] total 17 [2022-11-03 02:22:26,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133829789] [2022-11-03 02:22:26,670 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:22:26,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 02:22:26,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:22:26,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 02:22:26,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:22:26,672 INFO L87 Difference]: Start difference. First operand 518 states and 707 transitions. Second operand has 17 states, 15 states have (on average 16.133333333333333) internal successors, (242), 17 states have internal predecessors, (242), 4 states have call successors, (59), 2 states have call predecessors, (59), 5 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2022-11-03 02:22:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:27,832 INFO L93 Difference]: Finished difference Result 1050 states and 1439 transitions. [2022-11-03 02:22:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:22:27,833 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 16.133333333333333) internal successors, (242), 17 states have internal predecessors, (242), 4 states have call successors, (59), 2 states have call predecessors, (59), 5 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) Word has length 315 [2022-11-03 02:22:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:27,836 INFO L225 Difference]: With dead ends: 1050 [2022-11-03 02:22:27,837 INFO L226 Difference]: Without dead ends: 526 [2022-11-03 02:22:27,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1888 GetRequests, 1869 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:22:27,840 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 223 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 5494 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:27,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 5494 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:22:27,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-11-03 02:22:27,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2022-11-03 02:22:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 423 states have (on average 1.3475177304964538) internal successors, (570), 428 states have internal predecessors, (570), 73 states have call successors, (73), 30 states have call predecessors, (73), 29 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-03 02:22:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 715 transitions. [2022-11-03 02:22:27,869 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 715 transitions. Word has length 315 [2022-11-03 02:22:27,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:27,870 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 715 transitions. [2022-11-03 02:22:27,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 16.133333333333333) internal successors, (242), 17 states have internal predecessors, (242), 4 states have call successors, (59), 2 states have call predecessors, (59), 5 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2022-11-03 02:22:27,870 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 715 transitions. [2022-11-03 02:22:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-03 02:22:27,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:27,875 INFO L195 NwaCegarLoop]: trace histogram [15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:27,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:28,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:28,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:28,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:28,499 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:28,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:28,499 INFO L85 PathProgramCache]: Analyzing trace with hash 669709240, now seen corresponding path program 1 times [2022-11-03 02:22:28,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:22:28,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968014743] [2022-11-03 02:22:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:28,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:22:28,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:22:28,502 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:22:28,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:22:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:30,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:22:30,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 96 proven. 6 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-11-03 02:22:30,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-11-03 02:22:31,585 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:22:31,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968014743] [2022-11-03 02:22:31,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968014743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:31,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1731349341] [2022-11-03 02:22:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:31,586 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:22:31,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:22:31,587 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:22:31,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-03 02:22:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:34,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:22:34,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 96 proven. 6 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-11-03 02:22:35,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:35,464 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-11-03 02:22:35,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1731349341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:35,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315677104] [2022-11-03 02:22:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:35,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:35,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:35,471 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:35,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-03 02:22:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:37,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:22:37,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-11-03 02:22:37,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-11-03 02:22:37,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315677104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:37,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:22:37,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 7, 7] total 25 [2022-11-03 02:22:37,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937461369] [2022-11-03 02:22:37,998 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:22:37,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:22:37,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:22:38,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:22:38,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:22:38,000 INFO L87 Difference]: Start difference. First operand 526 states and 715 transitions. Second operand has 25 states, 23 states have (on average 10.826086956521738) internal successors, (249), 25 states have internal predecessors, (249), 4 states have call successors, (59), 2 states have call predecessors, (59), 5 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2022-11-03 02:22:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:40,432 INFO L93 Difference]: Finished difference Result 1072 states and 1464 transitions. [2022-11-03 02:22:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:22:40,433 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 10.826086956521738) internal successors, (249), 25 states have internal predecessors, (249), 4 states have call successors, (59), 2 states have call predecessors, (59), 5 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) Word has length 319 [2022-11-03 02:22:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:40,436 INFO L225 Difference]: With dead ends: 1072 [2022-11-03 02:22:40,436 INFO L226 Difference]: Without dead ends: 540 [2022-11-03 02:22:40,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1916 GetRequests, 1885 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=170, Invalid=886, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:22:40,439 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 866 mSDsluCounter, 6384 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:40,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 6916 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 02:22:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-03 02:22:40,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-11-03 02:22:40,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 437 states have (on average 1.3363844393592677) internal successors, (584), 442 states have internal predecessors, (584), 73 states have call successors, (73), 30 states have call predecessors, (73), 29 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-03 02:22:40,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 729 transitions. [2022-11-03 02:22:40,475 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 729 transitions. Word has length 319 [2022-11-03 02:22:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:40,476 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 729 transitions. [2022-11-03 02:22:40,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 10.826086956521738) internal successors, (249), 25 states have internal predecessors, (249), 4 states have call successors, (59), 2 states have call predecessors, (59), 5 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2022-11-03 02:22:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 729 transitions. [2022-11-03 02:22:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-03 02:22:40,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:40,480 INFO L195 NwaCegarLoop]: trace histogram [20, 11, 10, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:40,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:40,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 02:22:40,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2022-11-03 02:22:41,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:22:41,107 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:41,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:41,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1632861901, now seen corresponding path program 1 times [2022-11-03 02:22:41,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:22:41,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737329029] [2022-11-03 02:22:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:41,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:22:41,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:22:41,109 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:22:41,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 02:22:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:43,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:22:43,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 229 proven. 10 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2022-11-03 02:22:43,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 31 proven. 103 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2022-11-03 02:22:44,767 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:22:44,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737329029] [2022-11-03 02:22:44,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737329029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:44,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1533926229] [2022-11-03 02:22:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:44,767 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:22:44,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:22:44,768 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:22:44,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-03 02:22:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:48,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:22:48,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 229 proven. 10 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2022-11-03 02:22:48,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 31 proven. 103 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2022-11-03 02:22:48,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1533926229] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:48,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152985949] [2022-11-03 02:22:48,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:48,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:48,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:48,902 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:48,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-03 02:22:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:50,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:22:50,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2022-11-03 02:22:51,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2022-11-03 02:22:52,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152985949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:52,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:22:52,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 13, 13] total 39 [2022-11-03 02:22:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029619606] [2022-11-03 02:22:52,974 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:22:52,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-03 02:22:52,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:22:52,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-03 02:22:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1268, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:22:52,976 INFO L87 Difference]: Start difference. First operand 540 states and 729 transitions. Second operand has 39 states, 37 states have (on average 7.513513513513513) internal successors, (278), 39 states have internal predecessors, (278), 4 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-03 02:22:59,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:59,905 INFO L93 Difference]: Finished difference Result 1115 states and 1515 transitions. [2022-11-03 02:22:59,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-03 02:22:59,906 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 7.513513513513513) internal successors, (278), 39 states have internal predecessors, (278), 4 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 340 [2022-11-03 02:22:59,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:59,909 INFO L225 Difference]: With dead ends: 1115 [2022-11-03 02:22:59,910 INFO L226 Difference]: Without dead ends: 574 [2022-11-03 02:22:59,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2051 GetRequests, 1997 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=468, Invalid=2612, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 02:22:59,914 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 2169 mSDsluCounter, 10210 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 10746 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:59,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 10746 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 02:22:59,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-03 02:22:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2022-11-03 02:22:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 470 states have (on average 1.3170212765957447) internal successors, (619), 475 states have internal predecessors, (619), 73 states have call successors, (73), 31 states have call predecessors, (73), 30 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-03 02:22:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 764 transitions. [2022-11-03 02:22:59,968 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 764 transitions. Word has length 340 [2022-11-03 02:22:59,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:59,969 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 764 transitions. [2022-11-03 02:22:59,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 7.513513513513513) internal successors, (278), 39 states have internal predecessors, (278), 4 states have call successors, (57), 2 states have call predecessors, (57), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-03 02:22:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 764 transitions. [2022-11-03 02:22:59,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-03 02:22:59,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:59,974 INFO L195 NwaCegarLoop]: trace histogram [23, 16, 15, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:23:00,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:00,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:00,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:00,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:23:00,601 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:00,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:00,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1061300122, now seen corresponding path program 2 times [2022-11-03 02:23:00,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:23:00,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259438817] [2022-11-03 02:23:00,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:23:00,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:23:00,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:23:00,605 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:23:00,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 02:23:17,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:23:17,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:23:18,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:23:18,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 271 proven. 15 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2022-11-03 02:23:18,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:23:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 36 proven. 135 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2022-11-03 02:23:19,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:23:19,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259438817] [2022-11-03 02:23:19,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259438817] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:23:20,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [481733727] [2022-11-03 02:23:20,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:23:20,000 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:23:20,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:23:20,001 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:23:20,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c71829c-210c-4c48-a418-a84f6b5811aa/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process