./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs --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 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:33,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:33,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:33,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:33,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:33,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:33,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:33,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:33,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:33,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:33,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:33,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:33,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:33,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:33,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:33,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:33,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:33,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:33,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:33,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:33,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:33,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:33,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:33,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:33,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:33,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:33,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:33,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:33,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:33,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:33,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:33,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:33,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:33,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:33,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:33,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:33,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:33,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:33,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:33,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:33,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:33,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:14:33,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:33,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:33,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:33,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:33,294 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:33,294 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:33,294 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:33,294 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:14:33,295 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:33,295 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:33,295 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:14:33,295 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:14:33,295 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:33,296 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:14:33,296 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:14:33,296 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:14:33,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:33,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:14:33,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:33,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:33,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:33,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:33,298 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:33,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:33,299 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:33,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:33,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:33,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:33,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:33,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:33,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:33,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:33,304 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:14:33,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:14:33,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:33,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:33,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:33,306 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-19 14:14:33,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:33,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:33,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:33,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:33,725 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:33,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-19 14:14:33,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/data/da4c88480/79c14f1292684dd98904ba07fb768626/FLAG94eaf9168 [2021-11-19 14:14:34,759 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:34,760 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-19 14:14:34,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/data/da4c88480/79c14f1292684dd98904ba07fb768626/FLAG94eaf9168 [2021-11-19 14:14:35,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/data/da4c88480/79c14f1292684dd98904ba07fb768626 [2021-11-19 14:14:35,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:35,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:35,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:35,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:35,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:35,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:35" (1/1) ... [2021-11-19 14:14:35,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681c6830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:35, skipping insertion in model container [2021-11-19 14:14:35,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:35" (1/1) ... [2021-11-19 14:14:35,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:35,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:36,993 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:37,699 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:37,702 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:37,952 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:37,960 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:14:38,085 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_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-19 14:14:38,122 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:38,162 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:14:38,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4154917b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:38, skipping insertion in model container [2021-11-19 14:14:38,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:38,163 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:14:38,167 INFO L158 Benchmark]: Toolchain (without parser) took 2998.20ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 54.2MB in the beginning and 50.0MB in the end (delta: 4.1MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2021-11-19 14:14:38,168 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory was 63.8MB in the beginning and 63.8MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:14:38,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2995.06ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 54.0MB in the beginning and 50.0MB in the end (delta: 3.9MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2021-11-19 14:14:38,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory was 63.8MB in the beginning and 63.8MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2995.06ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 54.0MB in the beginning and 50.0MB in the end (delta: 3.9MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5575]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs --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 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:40,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:40,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:40,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:40,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:40,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:40,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:40,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:40,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:40,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:40,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:40,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:40,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:40,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:40,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:40,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:40,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:40,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:40,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:40,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:40,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:40,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:40,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:40,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:40,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:40,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:40,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:40,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:40,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:40,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:40,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:40,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:40,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:40,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:40,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:40,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:40,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:40,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:40,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:40,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:40,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:40,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:14:40,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:40,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:40,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:40,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:40,624 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:40,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:40,625 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:40,625 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:40,625 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:40,626 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:40,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:40,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:40,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:40,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:40,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:40,629 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:40,629 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:14:40,630 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:14:40,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:40,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:40,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:40,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:40,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:14:40,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:40,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:40,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:40,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:40,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:40,632 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:14:40,632 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:14:40,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:40,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:40,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:40,633 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_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-19 14:14:41,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:41,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:41,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:41,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:41,108 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:41,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-19 14:14:41,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/data/50a80f502/c388964c3f334d57bbe30af5ed878fd4/FLAG90ca4518a [2021-11-19 14:14:42,184 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:42,185 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-19 14:14:42,253 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/data/50a80f502/c388964c3f334d57bbe30af5ed878fd4/FLAG90ca4518a [2021-11-19 14:14:42,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/data/50a80f502/c388964c3f334d57bbe30af5ed878fd4 [2021-11-19 14:14:42,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:42,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:42,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:42,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:42,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:42,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:42" (1/1) ... [2021-11-19 14:14:42,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661d2d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:42, skipping insertion in model container [2021-11-19 14:14:42,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:42" (1/1) ... [2021-11-19 14:14:42,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:42,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:45,637 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_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-19 14:14:45,701 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:45,765 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:14:45,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:46,241 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_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-19 14:14:46,257 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:46,299 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:14:46,754 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_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-19 14:14:46,774 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:47,276 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:14:47,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47 WrapperNode [2021-11-19 14:14:47,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:47,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:47,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:14:47,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:14:47,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (1/1) ... [2021-11-19 14:14:47,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (1/1) ... [2021-11-19 14:14:47,731 INFO L137 Inliner]: procedures = 396, calls = 2295, calls flagged for inlining = 189, calls inlined = 143, statements flattened = 4424 [2021-11-19 14:14:47,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:47,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:14:47,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:14:47,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:14:47,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (1/1) ... [2021-11-19 14:14:47,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (1/1) ... [2021-11-19 14:14:47,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (1/1) ... [2021-11-19 14:14:47,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (1/1) ... [2021-11-19 14:14:47,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (1/1) ... [2021-11-19 14:14:48,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (1/1) ... [2021-11-19 14:14:48,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (1/1) ... [2021-11-19 14:14:48,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:14:48,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:14:48,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:14:48,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:14:48,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (1/1) ... [2021-11-19 14:14:48,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:48,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:48,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:14:48,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:14:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-19 14:14:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-19 14:14:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-19 14:14:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-19 14:14:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-19 14:14:48,179 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-19 14:14:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 14:14:48,179 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 14:14:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_mac_processor [2021-11-19 14:14:48,180 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_mac_processor [2021-11-19 14:14:48,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:14:48,180 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:14:48,180 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32 [2021-11-19 14:14:48,180 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32 [2021-11-19 14:14:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_regs_len [2021-11-19 14:14:48,181 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_regs_len [2021-11-19 14:14:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:14:48,181 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:14:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:14:48,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:14:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_on [2021-11-19 14:14:48,182 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_on [2021-11-19 14:14:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_rx_engine [2021-11-19 14:14:48,182 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_rx_engine [2021-11-19 14:14:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-19 14:14:48,183 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-19 14:14:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 14:14:48,183 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 14:14:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 14:14:48,183 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 14:14:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_link [2021-11-19 14:14:48,184 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_link [2021-11-19 14:14:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 14:14:48,184 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 14:14:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 14:14:48,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 14:14:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unmap_page_2 [2021-11-19 14:14:48,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unmap_page_2 [2021-11-19 14:14:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-19 14:14:48,186 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-19 14:14:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 14:14:48,186 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 14:14:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:14:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-19 14:14:48,187 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-19 14:14:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure jread32 [2021-11-19 14:14:48,187 INFO L138 BoogieDeclarations]: Found implementation of procedure jread32 [2021-11-19 14:14:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-19 14:14:48,188 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-19 14:14:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:14:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:14:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:14:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:14:48,190 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:14:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_rx_pcc [2021-11-19 14:14:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_rx_pcc [2021-11-19 14:14:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-19 14:14:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-19 14:14:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-19 14:14:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-19 14:14:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_unicastaddr [2021-11-19 14:14:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_unicastaddr [2021-11-19 14:14:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_macaddr [2021-11-19 14:14:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_macaddr [2021-11-19 14:14:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 14:14:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 14:14:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-19 14:14:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-19 14:14:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 14:14:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 14:14:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure jme_restart_rx_engine [2021-11-19 14:14:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_restart_rx_engine [2021-11-19 14:14:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:14:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:14:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-19 14:14:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-19 14:14:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-19 14:14:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-19 14:14:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_features [2021-11-19 14:14:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_features [2021-11-19 14:14:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 14:14:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 14:14:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure jme_linkstat_from_phy [2021-11-19 14:14:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_linkstat_from_phy [2021-11-19 14:14:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-11-19 14:14:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-11-19 14:14:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_write [2021-11-19 14:14:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_write [2021-11-19 14:14:48,200 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_on [2021-11-19 14:14:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_on [2021-11-19 14:14:48,201 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-19 14:14:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-19 14:14:48,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-19 14:14:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-19 14:14:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:14:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_coherent [2021-11-19 14:14:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_coherent [2021-11-19 14:14:48,203 INFO L130 BoogieDeclarations]: Found specification of procedure smi_phy_addr [2021-11-19 14:14:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_phy_addr [2021-11-19 14:14:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:14:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:14:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:14:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:14:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-19 14:14:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-19 14:14:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:14:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:14:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:14:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure reg_dbg [2021-11-19 14:14:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_dbg [2021-11-19 14:14:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-19 14:14:48,207 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-19 14:14:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:14:48,210 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:14:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-19 14:14:48,211 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-19 14:14:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 14:14:48,213 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 14:14:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:14:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure jme_start_irq [2021-11-19 14:14:48,213 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_start_irq [2021-11-19 14:14:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:14:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:14:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure jme_change_mtu [2021-11-19 14:14:48,221 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_change_mtu [2021-11-19 14:14:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-19 14:14:48,221 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-19 14:14:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-19 14:14:48,221 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-19 14:14:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:14:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-19 14:14:48,222 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-19 14:14:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure jme_fill_tx_map [2021-11-19 14:14:48,222 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_fill_tx_map [2021-11-19 14:14:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_tx_resources [2021-11-19 14:14:48,222 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_tx_resources [2021-11-19 14:14:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 14:14:48,223 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 14:14:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:14:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure jme_polling_mode [2021-11-19 14:14:48,223 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_polling_mode [2021-11-19 14:14:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:14:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:14:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable_pending [2021-11-19 14:14:48,224 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable_pending [2021-11-19 14:14:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:14:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:14:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:14:48,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:14:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure jme_ioctl [2021-11-19 14:14:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_ioctl [2021-11-19 14:14:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure jme_powersave_phy [2021-11-19 14:14:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_powersave_phy [2021-11-19 14:14:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_on [2021-11-19 14:14:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_on [2021-11-19 14:14:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure new_phy_power_ctrl [2021-11-19 14:14:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure new_phy_power_ctrl [2021-11-19 14:14:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-19 14:14:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-19 14:14:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable_nosync [2021-11-19 14:14:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable_nosync [2021-11-19 14:14:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-19 14:14:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-19 14:14:48,227 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32f [2021-11-19 14:14:48,227 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32f [2021-11-19 14:14:48,227 INFO L130 BoogieDeclarations]: Found specification of procedure smi_reg_addr [2021-11-19 14:14:48,227 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_reg_addr [2021-11-19 14:14:48,228 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_settings [2021-11-19 14:14:48,228 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_settings [2021-11-19 14:14:48,228 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-19 14:14:48,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-19 14:14:48,228 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-19 14:14:48,228 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-19 14:14:48,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:14:48,229 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:14:48,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:14:48,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:14:48,229 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:14:48,229 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:14:48,229 INFO L130 BoogieDeclarations]: Found specification of procedure jme_nway_reset [2021-11-19 14:14:48,230 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_nway_reset [2021-11-19 14:14:48,230 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 14:14:48,231 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 14:14:48,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:14:48,231 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:14:48,231 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:14:48,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:14:48,231 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_rx_resources [2021-11-19 14:14:48,232 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_rx_resources [2021-11-19 14:14:48,232 INFO L130 BoogieDeclarations]: Found specification of procedure jme_resume [2021-11-19 14:14:48,232 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_resume [2021-11-19 14:14:48,232 INFO L130 BoogieDeclarations]: Found specification of procedure jme_tx_timeout [2021-11-19 14:14:48,232 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_tx_timeout [2021-11-19 14:14:48,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:14:48,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:14:48,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:14:48,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:14:48,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:14:48,233 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_tx_engine [2021-11-19 14:14:48,233 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_tx_engine [2021-11-19 14:14:48,233 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 14:14:48,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 14:14:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:14:48,234 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:14:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_off [2021-11-19 14:14:48,234 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_off [2021-11-19 14:14:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-19 14:14:48,234 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-19 14:14:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_multi [2021-11-19 14:14:48,235 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_multi [2021-11-19 14:14:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure jme_vlan_rx_register [2021-11-19 14:14:48,235 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_vlan_rx_register [2021-11-19 14:14:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure mmapio_memcpy [2021-11-19 14:14:48,235 INFO L138 BoogieDeclarations]: Found implementation of procedure mmapio_memcpy [2021-11-19 14:14:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:14:48,236 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:14:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:14:48,236 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:14:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure jme_clear_pm [2021-11-19 14:14:48,236 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_clear_pm [2021-11-19 14:14:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2021-11-19 14:14:48,237 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2021-11-19 14:14:48,237 INFO L130 BoogieDeclarations]: Found specification of procedure jme_close [2021-11-19 14:14:48,237 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_close [2021-11-19 14:14:48,237 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:14:48,237 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:14:48,237 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-19 14:14:48,237 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-19 14:14:48,238 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_irq [2021-11-19 14:14:48,238 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_irq [2021-11-19 14:14:48,238 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:14:48,238 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:14:48,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:14:48,238 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_off [2021-11-19 14:14:48,238 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_off [2021-11-19 14:14:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:14:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:14:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:14:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_phy_processor [2021-11-19 14:14:48,240 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_phy_processor [2021-11-19 14:14:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure jme_suspend [2021-11-19 14:14:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_suspend [2021-11-19 14:14:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:14:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:14:48,249 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 14:14:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 14:14:48,249 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_off [2021-11-19 14:14:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_off [2021-11-19 14:14:48,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-19 14:14:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-19 14:14:48,250 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_phyfifo_5level [2021-11-19 14:14:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_phyfifo_5level [2021-11-19 14:14:48,250 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-19 14:14:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-19 14:14:48,250 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-19 14:14:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-19 14:14:48,250 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_eeprom_len [2021-11-19 14:14:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_eeprom_len [2021-11-19 14:14:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-19 14:14:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-19 14:14:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_pcc_timer [2021-11-19 14:14:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_pcc_timer [2021-11-19 14:14:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure jme_interrupt_mode [2021-11-19 14:14:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_interrupt_mode [2021-11-19 14:14:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure jme_fix_features [2021-11-19 14:14:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_fix_features [2021-11-19 14:14:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_settings [2021-11-19 14:14:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_settings [2021-11-19 14:14:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_read [2021-11-19 14:14:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_read [2021-11-19 14:14:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-19 14:14:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-19 14:14:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-19 14:14:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-19 14:14:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_map_page_1 [2021-11-19 14:14:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_map_page_1 [2021-11-19 14:14:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure jme_open [2021-11-19 14:14:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_open [2021-11-19 14:14:48,254 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-19 14:14:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-19 14:14:48,254 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2021-11-19 14:14:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2021-11-19 14:14:49,135 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:14:49,140 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:14:56,502 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:15:33,307 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:15:33,330 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:15:33,330 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 14:15:33,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:33 BoogieIcfgContainer [2021-11-19 14:15:33,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:15:33,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:15:33,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:15:33,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:15:33,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:14:42" (1/3) ... [2021-11-19 14:15:33,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7526cd74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:15:33, skipping insertion in model container [2021-11-19 14:15:33,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:47" (2/3) ... [2021-11-19 14:15:33,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7526cd74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:15:33, skipping insertion in model container [2021-11-19 14:15:33,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:33" (3/3) ... [2021-11-19 14:15:33,345 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-19 14:15:33,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:15:33,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:15:33,416 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:15:33,423 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:15:33,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:15:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 1938 states, 1269 states have (on average 1.3152088258471237) internal successors, (1669), 1316 states have internal predecessors, (1669), 546 states have call successors, (546), 126 states have call predecessors, (546), 125 states have return successors, (540), 530 states have call predecessors, (540), 540 states have call successors, (540) [2021-11-19 14:15:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-19 14:15:33,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:33,514 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:33,514 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash 914134315, now seen corresponding path program 1 times [2021-11-19 14:15:33,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:33,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560241323] [2021-11-19 14:15:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:33,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:33,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:33,550 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:33,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:15:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:35,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:15:35,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2021-11-19 14:15:36,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2021-11-19 14:15:38,166 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:38,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560241323] [2021-11-19 14:15:38,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560241323] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:15:38,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:15:38,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 14:15:38,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512461477] [2021-11-19 14:15:38,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:38,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:15:38,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:15:38,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:15:38,228 INFO L87 Difference]: Start difference. First operand has 1938 states, 1269 states have (on average 1.3152088258471237) internal successors, (1669), 1316 states have internal predecessors, (1669), 546 states have call successors, (546), 126 states have call predecessors, (546), 125 states have return successors, (540), 530 states have call predecessors, (540), 540 states have call successors, (540) Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 14:15:39,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:39,119 INFO L93 Difference]: Finished difference Result 3865 states and 5546 transitions. [2021-11-19 14:15:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:15:39,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 232 [2021-11-19 14:15:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:39,169 INFO L225 Difference]: With dead ends: 3865 [2021-11-19 14:15:39,170 INFO L226 Difference]: Without dead ends: 1911 [2021-11-19 14:15:39,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:15:39,201 INFO L933 BasicCegarLoop]: 2716 mSDtfsCounter, 6 mSDsluCounter, 10847 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 13563 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:39,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 13563 Invalid, 57 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:15:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2021-11-19 14:15:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1911. [2021-11-19 14:15:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1250 states have (on average 1.3064) internal successors, (1633), 1286 states have internal predecessors, (1633), 536 states have call successors, (536), 125 states have call predecessors, (536), 124 states have return successors, (533), 523 states have call predecessors, (533), 533 states have call successors, (533) [2021-11-19 14:15:39,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2702 transitions. [2021-11-19 14:15:39,451 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2702 transitions. Word has length 232 [2021-11-19 14:15:39,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:39,457 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 2702 transitions. [2021-11-19 14:15:39,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 14:15:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2702 transitions. [2021-11-19 14:15:39,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-19 14:15:39,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:39,471 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:39,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:39,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:39,692 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:39,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash -772722983, now seen corresponding path program 1 times [2021-11-19 14:15:39,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:39,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790034751] [2021-11-19 14:15:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:39,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:39,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:39,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:39,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:15:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:41,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:15:41,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2021-11-19 14:15:42,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2021-11-19 14:15:44,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:44,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790034751] [2021-11-19 14:15:44,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790034751] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:15:44,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1411014150] [2021-11-19 14:15:44,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:44,363 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:15:44,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:15:44,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:15:44,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-19 14:15:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:45,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:15:45,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2021-11-19 14:15:46,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2021-11-19 14:15:47,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1411014150] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:47,626 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:15:47,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-19 14:15:47,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549716147] [2021-11-19 14:15:47,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:47,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:15:47,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:47,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:15:47,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:15:47,635 INFO L87 Difference]: Start difference. First operand 1911 states and 2702 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-19 14:15:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:47,845 INFO L93 Difference]: Finished difference Result 1913 states and 2703 transitions. [2021-11-19 14:15:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:15:47,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 237 [2021-11-19 14:15:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:47,862 INFO L225 Difference]: With dead ends: 1913 [2021-11-19 14:15:47,863 INFO L226 Difference]: Without dead ends: 1910 [2021-11-19 14:15:47,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:15:47,866 INFO L933 BasicCegarLoop]: 2698 mSDtfsCounter, 2661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:47,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2661 Valid, 2698 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:15:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2021-11-19 14:15:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1910. [2021-11-19 14:15:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1250 states have (on average 1.3056) internal successors, (1632), 1285 states have internal predecessors, (1632), 535 states have call successors, (535), 125 states have call predecessors, (535), 124 states have return successors, (533), 523 states have call predecessors, (533), 533 states have call successors, (533) [2021-11-19 14:15:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2700 transitions. [2021-11-19 14:15:47,980 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2700 transitions. Word has length 237 [2021-11-19 14:15:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:47,981 INFO L470 AbstractCegarLoop]: Abstraction has 1910 states and 2700 transitions. [2021-11-19 14:15:47,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-19 14:15:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2700 transitions. [2021-11-19 14:15:47,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-19 14:15:47,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:47,986 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:47,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:48,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:48,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:48,398 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:48,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:48,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1814534289, now seen corresponding path program 1 times [2021-11-19 14:15:48,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:48,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923351540] [2021-11-19 14:15:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:48,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:48,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:48,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:48,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:15:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:49,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:15:49,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2021-11-19 14:15:50,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2021-11-19 14:15:52,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:52,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923351540] [2021-11-19 14:15:52,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923351540] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:15:52,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1747031035] [2021-11-19 14:15:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:52,438 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:15:52,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:15:52,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:15:52,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-19 14:15:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:53,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:15:53,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2021-11-19 14:15:54,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2021-11-19 14:15:55,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1747031035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:55,440 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:15:55,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-19 14:15:55,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859158633] [2021-11-19 14:15:55,440 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:55,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:15:55,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:55,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:15:55,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:15:55,442 INFO L87 Difference]: Start difference. First operand 1910 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-19 14:15:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:55,841 INFO L93 Difference]: Finished difference Result 5645 states and 7994 transitions. [2021-11-19 14:15:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:15:55,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 238 [2021-11-19 14:15:55,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:55,877 INFO L225 Difference]: With dead ends: 5645 [2021-11-19 14:15:55,877 INFO L226 Difference]: Without dead ends: 3767 [2021-11-19 14:15:55,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:15:55,896 INFO L933 BasicCegarLoop]: 3306 mSDtfsCounter, 2648 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 5949 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:55,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2648 Valid, 5949 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:15:55,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-19 14:15:56,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3765. [2021-11-19 14:15:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 2467 states have (on average 1.3084718281313337) internal successors, (3228), 2536 states have internal predecessors, (3228), 1051 states have call successors, (1051), 248 states have call predecessors, (1051), 246 states have return successors, (1051), 1028 states have call predecessors, (1051), 1048 states have call successors, (1051) [2021-11-19 14:15:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 5330 transitions. [2021-11-19 14:15:56,242 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 5330 transitions. Word has length 238 [2021-11-19 14:15:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:56,243 INFO L470 AbstractCegarLoop]: Abstraction has 3765 states and 5330 transitions. [2021-11-19 14:15:56,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-19 14:15:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 5330 transitions. [2021-11-19 14:15:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-19 14:15:56,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:56,268 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:56,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:56,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:56,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:15:56,692 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:56,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2093723822, now seen corresponding path program 1 times [2021-11-19 14:15:56,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:56,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239501300] [2021-11-19 14:15:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:56,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:56,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:56,697 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:56,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:15:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:58,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:15:58,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2021-11-19 14:16:00,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2021-11-19 14:16:03,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:03,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239501300] [2021-11-19 14:16:03,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239501300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:03,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1879901291] [2021-11-19 14:16:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:03,376 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:03,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:03,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:03,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 14:16:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:04,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:16:04,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2021-11-19 14:16:06,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2021-11-19 14:16:08,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1879901291] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:08,026 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:16:08,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-19 14:16:08,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30839096] [2021-11-19 14:16:08,026 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:08,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:16:08,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:08,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:16:08,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:16:08,029 INFO L87 Difference]: Start difference. First operand 3765 states and 5330 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-19 14:16:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:09,155 INFO L93 Difference]: Finished difference Result 10011 states and 14149 transitions. [2021-11-19 14:16:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:16:09,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 441 [2021-11-19 14:16:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:09,219 INFO L225 Difference]: With dead ends: 10011 [2021-11-19 14:16:09,219 INFO L226 Difference]: Without dead ends: 6284 [2021-11-19 14:16:09,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1760 GetRequests, 1750 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:16:09,246 INFO L933 BasicCegarLoop]: 3053 mSDtfsCounter, 1838 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 5584 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:09,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1838 Valid, 5584 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:16:09,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6284 states. [2021-11-19 14:16:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6284 to 6261. [2021-11-19 14:16:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 4110 states have (on average 1.3124087591240876) internal successors, (5394), 4231 states have internal predecessors, (5394), 1727 states have call successors, (1727), 425 states have call predecessors, (1727), 423 states have return successors, (1727), 1686 states have call predecessors, (1727), 1724 states have call successors, (1727) [2021-11-19 14:16:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 8848 transitions. [2021-11-19 14:16:09,732 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 8848 transitions. Word has length 441 [2021-11-19 14:16:09,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:09,735 INFO L470 AbstractCegarLoop]: Abstraction has 6261 states and 8848 transitions. [2021-11-19 14:16:09,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-19 14:16:09,736 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 8848 transitions. [2021-11-19 14:16:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1244 [2021-11-19 14:16:09,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:09,797 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:09,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:10,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:10,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:10,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash 928153376, now seen corresponding path program 1 times [2021-11-19 14:16:10,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:10,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491232621] [2021-11-19 14:16:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:10,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:10,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:10,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:10,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:16:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:13,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 4283 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:16:13,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12202 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 12153 trivial. 0 not checked. [2021-11-19 14:16:20,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12202 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 12161 trivial. 0 not checked. [2021-11-19 14:16:24,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:24,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491232621] [2021-11-19 14:16:24,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491232621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:24,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1043000295] [2021-11-19 14:16:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:24,991 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:24,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:24,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:24,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 14:16:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:26,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 4283 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:16:26,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 12202 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12202 trivial. 0 not checked. [2021-11-19 14:16:33,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12202 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12202 trivial. 0 not checked. [2021-11-19 14:16:36,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1043000295] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:36,792 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:16:36,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-19 14:16:36,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946332514] [2021-11-19 14:16:36,794 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:36,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:16:36,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:36,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:16:36,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:16:36,798 INFO L87 Difference]: Start difference. First operand 6261 states and 8848 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 2 states have call successors, (166), 2 states have call predecessors, (166), 2 states have return successors, (162), 2 states have call predecessors, (162), 2 states have call successors, (162) [2021-11-19 14:16:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:37,974 INFO L93 Difference]: Finished difference Result 17689 states and 24914 transitions. [2021-11-19 14:16:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:16:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 2 states have call successors, (166), 2 states have call predecessors, (166), 2 states have return successors, (162), 2 states have call predecessors, (162), 2 states have call successors, (162) Word has length 1243 [2021-11-19 14:16:37,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:38,132 INFO L225 Difference]: With dead ends: 17689 [2021-11-19 14:16:38,133 INFO L226 Difference]: Without dead ends: 11466 [2021-11-19 14:16:38,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4968 GetRequests, 4958 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:16:38,180 INFO L933 BasicCegarLoop]: 3349 mSDtfsCounter, 2411 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 5932 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:38,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2411 Valid, 5932 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:16:38,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11466 states. [2021-11-19 14:16:38,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11466 to 11453. [2021-11-19 14:16:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11453 states, 7503 states have (on average 1.3032120485139278) internal successors, (9778), 7730 states have internal predecessors, (9778), 3161 states have call successors, (3161), 790 states have call predecessors, (3161), 788 states have return successors, (3164), 3082 states have call predecessors, (3164), 3158 states have call successors, (3164) [2021-11-19 14:16:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 16103 transitions. [2021-11-19 14:16:39,043 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 16103 transitions. Word has length 1243 [2021-11-19 14:16:39,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:39,044 INFO L470 AbstractCegarLoop]: Abstraction has 11453 states and 16103 transitions. [2021-11-19 14:16:39,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 2 states have call successors, (166), 2 states have call predecessors, (166), 2 states have return successors, (162), 2 states have call predecessors, (162), 2 states have call successors, (162) [2021-11-19 14:16:39,045 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 16103 transitions. [2021-11-19 14:16:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1386 [2021-11-19 14:16:39,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:39,146 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:39,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:39,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:39,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:39,563 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:39,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:39,564 INFO L85 PathProgramCache]: Analyzing trace with hash 564275242, now seen corresponding path program 1 times [2021-11-19 14:16:39,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:39,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640663376] [2021-11-19 14:16:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:39,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:39,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:39,570 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:39,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:16:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:43,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 4682 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:16:43,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13718 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12549 trivial. 0 not checked. [2021-11-19 14:16:51,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13718 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13677 trivial. 0 not checked. [2021-11-19 14:16:57,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:57,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640663376] [2021-11-19 14:16:57,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640663376] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:57,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1626274642] [2021-11-19 14:16:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:57,030 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:57,030 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:57,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 14:16:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:59,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 4682 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:16:59,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 13718 backedges. 1082 proven. 0 refuted. 0 times theorem prover too weak. 12636 trivial. 0 not checked. [2021-11-19 14:17:07,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13718 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13714 trivial. 0 not checked. [2021-11-19 14:17:11,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1626274642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:11,321 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:17:11,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-19 14:17:11,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736229593] [2021-11-19 14:17:11,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:11,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:17:11,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:11,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:17:11,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:17:11,328 INFO L87 Difference]: Start difference. First operand 11453 states and 16103 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (183), 3 states have call predecessors, (183), 3 states have return successors, (179), 4 states have call predecessors, (179), 4 states have call successors, (179) [2021-11-19 14:17:22,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:22,160 INFO L93 Difference]: Finished difference Result 33614 states and 47351 transitions. [2021-11-19 14:17:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:17:22,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (183), 3 states have call predecessors, (183), 3 states have return successors, (179), 4 states have call predecessors, (179), 4 states have call successors, (179) Word has length 1385 [2021-11-19 14:17:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:22,299 INFO L225 Difference]: With dead ends: 33614 [2021-11-19 14:17:22,300 INFO L226 Difference]: Without dead ends: 22199 [2021-11-19 14:17:22,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5536 GetRequests, 5525 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:17:22,367 INFO L933 BasicCegarLoop]: 5675 mSDtfsCounter, 5004 mSDsluCounter, 4018 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5004 SdHoareTripleChecker+Valid, 9693 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:22,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5004 Valid, 9693 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2021-11-19 14:17:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22199 states. [2021-11-19 14:17:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22199 to 22173. [2021-11-19 14:17:23,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22173 states, 14625 states have (on average 1.306940170940171) internal successors, (19114), 15064 states have internal predecessors, (19114), 6029 states have call successors, (6029), 1520 states have call predecessors, (6029), 1518 states have return successors, (6038), 5874 states have call predecessors, (6038), 6026 states have call successors, (6038) [2021-11-19 14:17:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22173 states to 22173 states and 31181 transitions. [2021-11-19 14:17:23,916 INFO L78 Accepts]: Start accepts. Automaton has 22173 states and 31181 transitions. Word has length 1385 [2021-11-19 14:17:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:23,919 INFO L470 AbstractCegarLoop]: Abstraction has 22173 states and 31181 transitions. [2021-11-19 14:17:23,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (183), 3 states have call predecessors, (183), 3 states have return successors, (179), 4 states have call predecessors, (179), 4 states have call successors, (179) [2021-11-19 14:17:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 22173 states and 31181 transitions. [2021-11-19 14:17:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2021-11-19 14:17:23,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:23,972 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 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, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:24,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:24,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-11-19 14:17:24,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:17:24,388 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:17:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1287887632, now seen corresponding path program 1 times [2021-11-19 14:17:24,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:24,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600411594] [2021-11-19 14:17:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:24,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:24,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:24,394 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:24,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:17:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:27,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 4730 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:17:27,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12564 trivial. 0 not checked. [2021-11-19 14:17:36,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13692 trivial. 0 not checked. [2021-11-19 14:17:41,187 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:41,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600411594] [2021-11-19 14:17:41,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600411594] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:17:41,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [607530273] [2021-11-19 14:17:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:41,187 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:17:41,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:17:41,188 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:17:41,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 14:17:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:43,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 4730 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:17:43,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13733 trivial. 0 not checked. [2021-11-19 14:17:51,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13731 trivial. 0 not checked. [2021-11-19 14:17:56,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [607530273] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:17:56,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:17:56,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 7, 9] total 21 [2021-11-19 14:17:56,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201951646] [2021-11-19 14:17:56,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:56,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:17:56,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:17:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:17:56,625 INFO L87 Difference]: Start difference. First operand 22173 states and 31181 transitions. Second operand has 8 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 3 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (98), 4 states have call predecessors, (98), 3 states have call successors, (98) [2021-11-19 14:17:59,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:59,481 INFO L93 Difference]: Finished difference Result 44408 states and 62579 transitions. [2021-11-19 14:17:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:17:59,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 3 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (98), 4 states have call predecessors, (98), 3 states have call successors, (98) Word has length 1410 [2021-11-19 14:17:59,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:59,618 INFO L225 Difference]: With dead ends: 44408 [2021-11-19 14:17:59,618 INFO L226 Difference]: Without dead ends: 22273 [2021-11-19 14:17:59,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5640 GetRequests, 5616 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:17:59,931 INFO L933 BasicCegarLoop]: 2693 mSDtfsCounter, 14 mSDsluCounter, 16113 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18806 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:59,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 18806 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:17:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22273 states. [2021-11-19 14:18:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22273 to 22203. [2021-11-19 14:18:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22203 states, 14645 states have (on average 1.3065209969272789) internal successors, (19134), 15074 states have internal predecessors, (19134), 6039 states have call successors, (6039), 1520 states have call predecessors, (6039), 1518 states have return successors, (6048), 5884 states have call predecessors, (6048), 6036 states have call successors, (6048) [2021-11-19 14:18:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22203 states to 22203 states and 31221 transitions. [2021-11-19 14:18:01,687 INFO L78 Accepts]: Start accepts. Automaton has 22203 states and 31221 transitions. Word has length 1410 [2021-11-19 14:18:01,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:01,688 INFO L470 AbstractCegarLoop]: Abstraction has 22203 states and 31221 transitions. [2021-11-19 14:18:01,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 3 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (98), 4 states have call predecessors, (98), 3 states have call successors, (98) [2021-11-19 14:18:01,689 INFO L276 IsEmpty]: Start isEmpty. Operand 22203 states and 31221 transitions. [2021-11-19 14:18:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2021-11-19 14:18:01,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:01,741 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 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, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:01,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:02,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-19 14:18:02,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:18:02,164 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:18:02,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1383625267, now seen corresponding path program 1 times [2021-11-19 14:18:02,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:18:02,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870626010] [2021-11-19 14:18:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:02,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:18:02,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:18:02,169 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:18:02,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:18:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:05,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 4740 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:18:05,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12564 trivial. 0 not checked. [2021-11-19 14:18:14,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13692 trivial. 0 not checked. [2021-11-19 14:18:18,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:18:18,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870626010] [2021-11-19 14:18:18,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870626010] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:18:18,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1908644460] [2021-11-19 14:18:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:18,939 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:18:18,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:18:18,940 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:18:18,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-19 14:18:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:20,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 4740 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:18:20,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 2191 proven. 0 refuted. 0 times theorem prover too weak. 11542 trivial. 0 not checked. [2021-11-19 14:18:26,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13733 trivial. 0 not checked. [2021-11-19 14:18:30,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1908644460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:30,322 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:18:30,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-19 14:18:30,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296948831] [2021-11-19 14:18:30,324 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:30,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:18:30,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:18:30,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:18:30,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:30,328 INFO L87 Difference]: Start difference. First operand 22203 states and 31221 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (151), 2 states have call predecessors, (151), 2 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2021-11-19 14:18:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:31,275 INFO L93 Difference]: Finished difference Result 44498 states and 62635 transitions. [2021-11-19 14:18:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:18:31,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (151), 2 states have call predecessors, (151), 2 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) Word has length 1414 [2021-11-19 14:18:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:31,408 INFO L225 Difference]: With dead ends: 44498 [2021-11-19 14:18:31,408 INFO L226 Difference]: Without dead ends: 22333 [2021-11-19 14:18:31,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5652 GetRequests, 5641 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:31,504 INFO L933 BasicCegarLoop]: 2701 mSDtfsCounter, 6 mSDsluCounter, 5382 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:31,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 8083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:18:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22333 states. [2021-11-19 14:18:32,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22333 to 22263. [2021-11-19 14:18:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22263 states, 14685 states have (on average 1.3070480081716036) internal successors, (19194), 15114 states have internal predecessors, (19194), 6059 states have call successors, (6059), 1520 states have call predecessors, (6059), 1518 states have return successors, (6068), 5904 states have call predecessors, (6068), 6056 states have call successors, (6068) [2021-11-19 14:18:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22263 states to 22263 states and 31321 transitions. [2021-11-19 14:18:32,926 INFO L78 Accepts]: Start accepts. Automaton has 22263 states and 31321 transitions. Word has length 1414 [2021-11-19 14:18:32,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:32,928 INFO L470 AbstractCegarLoop]: Abstraction has 22263 states and 31321 transitions. [2021-11-19 14:18:32,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (151), 2 states have call predecessors, (151), 2 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2021-11-19 14:18:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 22263 states and 31321 transitions. [2021-11-19 14:18:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2021-11-19 14:18:32,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:32,977 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 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, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:33,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 14:18:33,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:33,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:18:33,393 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:18:33,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:33,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1534068085, now seen corresponding path program 1 times [2021-11-19 14:18:33,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:18:33,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4790036] [2021-11-19 14:18:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:33,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:18:33,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:18:33,399 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:18:33,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:18:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:36,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 4740 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:18:36,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12564 trivial. 0 not checked. [2021-11-19 14:18:45,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13692 trivial. 0 not checked. [2021-11-19 14:18:49,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:18:49,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4790036] [2021-11-19 14:18:49,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4790036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:18:49,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2996570] [2021-11-19 14:18:49,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:49,943 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:18:49,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:18:49,944 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:18:49,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 14:18:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:51,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 4740 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:18:51,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 3430 proven. 0 refuted. 0 times theorem prover too weak. 10303 trivial. 0 not checked. [2021-11-19 14:18:57,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13733 trivial. 0 not checked. [2021-11-19 14:19:01,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2996570] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:01,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:19:01,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-19 14:19:01,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245099505] [2021-11-19 14:19:01,012 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:01,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:19:01,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:01,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:19:01,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:19:01,014 INFO L87 Difference]: Start difference. First operand 22263 states and 31321 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 2 states have call successors, (146), 2 states have call predecessors, (146), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2021-11-19 14:19:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:01,875 INFO L93 Difference]: Finished difference Result 44618 states and 62835 transitions. [2021-11-19 14:19:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:19:01,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 2 states have call successors, (146), 2 states have call predecessors, (146), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) Word has length 1414 [2021-11-19 14:19:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:02,008 INFO L225 Difference]: With dead ends: 44618 [2021-11-19 14:19:02,008 INFO L226 Difference]: Without dead ends: 22393 [2021-11-19 14:19:02,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5652 GetRequests, 5641 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:19:02,111 INFO L933 BasicCegarLoop]: 2701 mSDtfsCounter, 8 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:02,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 5393 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:19:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22393 states. [2021-11-19 14:19:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22393 to 22323. [2021-11-19 14:19:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22323 states, 14725 states have (on average 1.307572156196944) internal successors, (19254), 15154 states have internal predecessors, (19254), 6079 states have call successors, (6079), 1520 states have call predecessors, (6079), 1518 states have return successors, (6088), 5924 states have call predecessors, (6088), 6076 states have call successors, (6088) [2021-11-19 14:19:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22323 states to 22323 states and 31421 transitions. [2021-11-19 14:19:03,505 INFO L78 Accepts]: Start accepts. Automaton has 22323 states and 31421 transitions. Word has length 1414 [2021-11-19 14:19:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:03,509 INFO L470 AbstractCegarLoop]: Abstraction has 22323 states and 31421 transitions. [2021-11-19 14:19:03,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 2 states have call successors, (146), 2 states have call predecessors, (146), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2021-11-19 14:19:03,509 INFO L276 IsEmpty]: Start isEmpty. Operand 22323 states and 31421 transitions. [2021-11-19 14:19:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1414 [2021-11-19 14:19:03,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:03,557 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:03,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:03,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:03,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:03,981 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:19:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1084106040, now seen corresponding path program 1 times [2021-11-19 14:19:03,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:03,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094154061] [2021-11-19 14:19:03,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:03,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:03,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:03,987 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:03,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:19:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:07,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 4738 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:19:07,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12563 trivial. 0 not checked. [2021-11-19 14:19:16,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13691 trivial. 0 not checked. [2021-11-19 14:19:21,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:21,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094154061] [2021-11-19 14:19:21,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094154061] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:19:21,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1541749369] [2021-11-19 14:19:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:21,093 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:19:21,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:19:21,094 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:19:21,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 14:19:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:26,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 4738 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:19:26,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12563 trivial. 0 not checked. [2021-11-19 14:19:35,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13691 trivial. 0 not checked. [2021-11-19 14:19:39,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1541749369] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:19:39,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747051141] [2021-11-19 14:19:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:39,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:19:39,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:19:39,602 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:19:39,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-19 14:19:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:41,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 4738 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:19:41,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 13040 trivial. 0 not checked. [2021-11-19 14:19:43,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13732 trivial. 0 not checked. [2021-11-19 14:19:46,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747051141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:46,903 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 14:19:46,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7, 7, 7] total 13 [2021-11-19 14:19:46,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654517384] [2021-11-19 14:19:46,906 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:46,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:19:46,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:46,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:19:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:19:46,909 INFO L87 Difference]: Start difference. First operand 22323 states and 31421 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2021-11-19 14:19:49,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:19:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:49,852 INFO L93 Difference]: Finished difference Result 44800 states and 63141 transitions. [2021-11-19 14:19:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:19:49,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 1413 [2021-11-19 14:19:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:49,979 INFO L225 Difference]: With dead ends: 44800 [2021-11-19 14:19:49,980 INFO L226 Difference]: Without dead ends: 22515 [2021-11-19 14:19:50,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8472 GetRequests, 8461 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:19:50,073 INFO L933 BasicCegarLoop]: 2700 mSDtfsCounter, 21 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5389 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:50,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 5389 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:19:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22515 states. [2021-11-19 14:19:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22515 to 22515. [2021-11-19 14:19:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22515 states, 14853 states have (on average 1.3059987881236115) internal successors, (19398), 15282 states have internal predecessors, (19398), 6143 states have call successors, (6143), 1520 states have call predecessors, (6143), 1518 states have return successors, (6152), 5988 states have call predecessors, (6152), 6140 states have call successors, (6152) [2021-11-19 14:19:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22515 states to 22515 states and 31693 transitions. [2021-11-19 14:19:51,372 INFO L78 Accepts]: Start accepts. Automaton has 22515 states and 31693 transitions. Word has length 1413 [2021-11-19 14:19:51,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:51,376 INFO L470 AbstractCegarLoop]: Abstraction has 22515 states and 31693 transitions. [2021-11-19 14:19:51,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2021-11-19 14:19:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 22515 states and 31693 transitions. [2021-11-19 14:19:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1517 [2021-11-19 14:19:51,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:51,443 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 49, 49, 33, 33, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:51,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:51,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:51,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:52,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:52,057 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:19:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash 653669197, now seen corresponding path program 1 times [2021-11-19 14:19:52,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:52,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924012809] [2021-11-19 14:19:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:52,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:52,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:52,065 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:52,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:19:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:55,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 5044 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:19:55,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 15633 trivial. 0 not checked. [2021-11-19 14:20:04,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 16761 trivial. 0 not checked. [2021-11-19 14:20:09,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:09,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924012809] [2021-11-19 14:20:09,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924012809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:20:09,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [347472391] [2021-11-19 14:20:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:09,936 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:20:09,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:20:09,937 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:20:09,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 14:20:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:16,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 5044 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:20:16,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 15633 trivial. 0 not checked. [2021-11-19 14:20:24,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 16761 trivial. 0 not checked. [2021-11-19 14:20:29,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [347472391] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:20:29,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812709129] [2021-11-19 14:20:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:29,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:20:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:20:29,703 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:20:29,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-19 14:20:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:31,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 5044 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:20:31,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 2251 proven. 0 refuted. 0 times theorem prover too weak. 14551 trivial. 0 not checked. [2021-11-19 14:20:34,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16795 trivial. 0 not checked. [2021-11-19 14:20:38,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812709129] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:38,200 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 14:20:38,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7, 7, 7] total 13 [2021-11-19 14:20:38,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783336688] [2021-11-19 14:20:38,204 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:38,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:20:38,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:38,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:20:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:20:38,207 INFO L87 Difference]: Start difference. First operand 22515 states and 31693 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2021-11-19 14:20:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:39,129 INFO L93 Difference]: Finished difference Result 45184 states and 63701 transitions. [2021-11-19 14:20:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:20:39,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 1516 [2021-11-19 14:20:39,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:39,250 INFO L225 Difference]: With dead ends: 45184 [2021-11-19 14:20:39,251 INFO L226 Difference]: Without dead ends: 22707 [2021-11-19 14:20:39,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9090 GetRequests, 9079 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:20:39,339 INFO L933 BasicCegarLoop]: 2698 mSDtfsCounter, 6 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5389 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:39,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 5389 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:20:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22707 states. [2021-11-19 14:20:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22707 to 22707. [2021-11-19 14:20:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22707 states, 14981 states have (on average 1.3033842867632335) internal successors, (19526), 15410 states have internal predecessors, (19526), 6207 states have call successors, (6207), 1520 states have call predecessors, (6207), 1518 states have return successors, (6216), 6052 states have call predecessors, (6216), 6204 states have call successors, (6216) [2021-11-19 14:20:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22707 states to 22707 states and 31949 transitions. [2021-11-19 14:20:40,556 INFO L78 Accepts]: Start accepts. Automaton has 22707 states and 31949 transitions. Word has length 1516 [2021-11-19 14:20:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:40,559 INFO L470 AbstractCegarLoop]: Abstraction has 22707 states and 31949 transitions. [2021-11-19 14:20:40,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2021-11-19 14:20:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 22707 states and 31949 transitions. [2021-11-19 14:20:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2021-11-19 14:20:40,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:40,608 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 57, 57, 41, 41, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:20:40,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:40,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:41,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:41,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:20:41,225 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:20:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1473171512, now seen corresponding path program 1 times [2021-11-19 14:20:41,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:41,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792148680] [2021-11-19 14:20:41,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:41,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:41,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:41,234 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:41,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:20:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:45,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 5598 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:20:45,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 23134 trivial. 0 not checked. [2021-11-19 14:20:55,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 24262 trivial. 0 not checked. [2021-11-19 14:21:01,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:01,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792148680] [2021-11-19 14:21:01,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792148680] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:21:01,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1484678681] [2021-11-19 14:21:01,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:01,304 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:21:01,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:21:01,316 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:21:01,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-19 14:21:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:07,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 5598 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:21:07,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 23134 trivial. 0 not checked. [2021-11-19 14:21:18,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 24262 trivial. 0 not checked. [2021-11-19 14:21:23,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1484678681] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:21:23,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436755809] [2021-11-19 14:21:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:23,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:21:23,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:21:23,344 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:21:23,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-19 14:21:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:26,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 5598 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:21:26,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 23134 trivial. 0 not checked. [2021-11-19 14:21:36,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 24262 trivial. 0 not checked. [2021-11-19 14:21:42,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436755809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:21:42,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:21:42,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 11 [2021-11-19 14:21:42,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660677936] [2021-11-19 14:21:42,064 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:21:42,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:21:42,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:21:42,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:21:42,070 INFO L87 Difference]: Start difference. First operand 22707 states and 31949 transitions. Second operand has 11 states, 9 states have (on average 40.0) internal successors, (360), 11 states have internal predecessors, (360), 4 states have call successors, (201), 2 states have call predecessors, (201), 5 states have return successors, (198), 4 states have call predecessors, (198), 4 states have call successors, (198) [2021-11-19 14:21:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:43,761 INFO L93 Difference]: Finished difference Result 45441 states and 63935 transitions. [2021-11-19 14:21:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:21:43,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 40.0) internal successors, (360), 11 states have internal predecessors, (360), 4 states have call successors, (201), 2 states have call predecessors, (201), 5 states have return successors, (198), 4 states have call predecessors, (198), 4 states have call successors, (198) Word has length 1711 [2021-11-19 14:21:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:43,863 INFO L225 Difference]: With dead ends: 45441 [2021-11-19 14:21:43,863 INFO L226 Difference]: Without dead ends: 22723 [2021-11-19 14:21:43,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10262 GetRequests, 10251 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:21:43,954 INFO L933 BasicCegarLoop]: 2691 mSDtfsCounter, 7 mSDsluCounter, 18809 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21500 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:43,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 21500 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:21:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22723 states. [2021-11-19 14:21:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22723 to 22723. [2021-11-19 14:21:45,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22723 states, 14997 states have (on average 1.3030606121224244) internal successors, (19542), 15426 states have internal predecessors, (19542), 6207 states have call successors, (6207), 1520 states have call predecessors, (6207), 1518 states have return successors, (6216), 6052 states have call predecessors, (6216), 6204 states have call successors, (6216) [2021-11-19 14:21:45,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22723 states to 22723 states and 31965 transitions. [2021-11-19 14:21:45,279 INFO L78 Accepts]: Start accepts. Automaton has 22723 states and 31965 transitions. Word has length 1711 [2021-11-19 14:21:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:45,280 INFO L470 AbstractCegarLoop]: Abstraction has 22723 states and 31965 transitions. [2021-11-19 14:21:45,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 40.0) internal successors, (360), 11 states have internal predecessors, (360), 4 states have call successors, (201), 2 states have call predecessors, (201), 5 states have return successors, (198), 4 states have call predecessors, (198), 4 states have call successors, (198) [2021-11-19 14:21:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 22723 states and 31965 transitions. [2021-11-19 14:21:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2021-11-19 14:21:45,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:45,331 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 57, 57, 41, 41, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:45,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:45,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:45,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:45,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:21:45,959 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:45,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1307321644, now seen corresponding path program 1 times [2021-11-19 14:21:45,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:45,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790067956] [2021-11-19 14:21:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:45,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:45,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:45,966 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:46,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 14:21:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:49,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 5621 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:21:49,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 1188 proven. 3 refuted. 0 times theorem prover too weak. 23171 trivial. 0 not checked. [2021-11-19 14:22:00,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 24299 trivial. 0 not checked. [2021-11-19 14:22:06,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:06,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790067956] [2021-11-19 14:22:06,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790067956] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:22:06,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1557466587] [2021-11-19 14:22:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:06,976 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:22:06,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:22:06,977 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:22:06,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 14:22:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:13,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 5621 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:22:13,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 1188 proven. 3 refuted. 0 times theorem prover too weak. 23171 trivial. 0 not checked. [2021-11-19 14:22:23,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 24299 trivial. 0 not checked. [2021-11-19 14:22:29,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1557466587] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:22:29,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600909325] [2021-11-19 14:22:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:29,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:22:29,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:22:29,292 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:22:29,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-19 14:22:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:31,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 5621 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:22:31,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 1188 proven. 3 refuted. 0 times theorem prover too weak. 23171 trivial. 0 not checked. [2021-11-19 14:22:42,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 24299 trivial. 0 not checked. [2021-11-19 14:22:49,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600909325] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:22:49,410 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:22:49,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-19 14:22:49,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561984141] [2021-11-19 14:22:49,414 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:22:49,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:22:49,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:49,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:22:49,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:22:49,424 INFO L87 Difference]: Start difference. First operand 22723 states and 31965 transitions. Second operand has 20 states, 17 states have (on average 21.88235294117647) internal successors, (372), 20 states have internal predecessors, (372), 5 states have call successors, (202), 2 states have call predecessors, (202), 7 states have return successors, (201), 5 states have call predecessors, (201), 5 states have call successors, (201) [2021-11-19 14:22:51,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:51,831 INFO L93 Difference]: Finished difference Result 45473 states and 63967 transitions. [2021-11-19 14:22:51,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:22:51,833 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 21.88235294117647) internal successors, (372), 20 states have internal predecessors, (372), 5 states have call successors, (202), 2 states have call predecessors, (202), 7 states have return successors, (201), 5 states have call predecessors, (201), 5 states have call successors, (201) Word has length 1715 [2021-11-19 14:22:51,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:51,920 INFO L225 Difference]: With dead ends: 45473 [2021-11-19 14:22:51,920 INFO L226 Difference]: Without dead ends: 22739 [2021-11-19 14:22:51,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10286 GetRequests, 10266 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:22:51,996 INFO L933 BasicCegarLoop]: 2690 mSDtfsCounter, 19 mSDsluCounter, 24183 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 26873 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:51,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 26873 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:22:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22739 states. [2021-11-19 14:22:53,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22739 to 22739. [2021-11-19 14:22:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22739 states, 15013 states have (on average 1.3027376273895956) internal successors, (19558), 15442 states have internal predecessors, (19558), 6207 states have call successors, (6207), 1520 states have call predecessors, (6207), 1518 states have return successors, (6216), 6052 states have call predecessors, (6216), 6204 states have call successors, (6216) [2021-11-19 14:22:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22739 states to 22739 states and 31981 transitions. [2021-11-19 14:22:53,268 INFO L78 Accepts]: Start accepts. Automaton has 22739 states and 31981 transitions. Word has length 1715 [2021-11-19 14:22:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:53,269 INFO L470 AbstractCegarLoop]: Abstraction has 22739 states and 31981 transitions. [2021-11-19 14:22:53,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 21.88235294117647) internal successors, (372), 20 states have internal predecessors, (372), 5 states have call successors, (202), 2 states have call predecessors, (202), 7 states have return successors, (201), 5 states have call predecessors, (201), 5 states have call successors, (201) [2021-11-19 14:22:53,270 INFO L276 IsEmpty]: Start isEmpty. Operand 22739 states and 31981 transitions. [2021-11-19 14:22:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1722 [2021-11-19 14:22:53,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:53,304 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 57, 57, 41, 41, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:53,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-19 14:22:53,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-19 14:22:53,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-19 14:22:53,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:53,927 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:53,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:53,928 INFO L85 PathProgramCache]: Analyzing trace with hash -937802232, now seen corresponding path program 2 times [2021-11-19 14:22:53,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:53,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198728244] [2021-11-19 14:22:53,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:22:53,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:53,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:53,935 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:53,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 14:23:33,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:23:33,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:23:34,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 5648 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:23:34,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 24448 backedges. 1216 proven. 6 refuted. 0 times theorem prover too weak. 23226 trivial. 0 not checked. [2021-11-19 14:23:45,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 24448 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 24354 trivial. 0 not checked. [2021-11-19 14:23:51,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:51,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198728244] [2021-11-19 14:23:51,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198728244] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:23:51,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1792846728] [2021-11-19 14:23:51,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:23:51,651 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:23:51,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:23:51,651 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:23:51,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-19 14:24:36,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:24:36,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:24:36,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 5648 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:24:36,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 24448 backedges. 1216 proven. 6 refuted. 0 times theorem prover too weak. 23226 trivial. 0 not checked. [2021-11-19 14:24:47,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 24448 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 24354 trivial. 0 not checked. [2021-11-19 14:24:52,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1792846728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:24:52,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253162684] [2021-11-19 14:24:52,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:24:52,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:24:52,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:24:52,442 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:24:52,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-19 14:25:19,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:25:19,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:25:19,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 5648 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:25:19,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:25:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24448 backedges. 1216 proven. 6 refuted. 0 times theorem prover too weak. 23226 trivial. 0 not checked. [2021-11-19 14:25:30,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:25:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 24448 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 24354 trivial. 0 not checked. [2021-11-19 14:25:37,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253162684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:25:37,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:25:37,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 23 [2021-11-19 14:25:37,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642012385] [2021-11-19 14:25:37,428 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:25:37,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 14:25:37,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:25:37,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 14:25:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:25:37,437 INFO L87 Difference]: Start difference. First operand 22739 states and 31981 transitions. Second operand has 23 states, 20 states have (on average 18.75) internal successors, (375), 23 states have internal predecessors, (375), 5 states have call successors, (202), 2 states have call predecessors, (202), 7 states have return successors, (201), 5 states have call predecessors, (201), 5 states have call successors, (201) [2021-11-19 14:25:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:40,044 INFO L93 Difference]: Finished difference Result 45505 states and 63999 transitions. [2021-11-19 14:25:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:25:40,046 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 18.75) internal successors, (375), 23 states have internal predecessors, (375), 5 states have call successors, (202), 2 states have call predecessors, (202), 7 states have return successors, (201), 5 states have call predecessors, (201), 5 states have call successors, (201) Word has length 1721 [2021-11-19 14:25:40,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:40,129 INFO L225 Difference]: With dead ends: 45505 [2021-11-19 14:25:40,129 INFO L226 Difference]: Without dead ends: 22755 [2021-11-19 14:25:40,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10322 GetRequests, 10299 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:25:40,194 INFO L933 BasicCegarLoop]: 2690 mSDtfsCounter, 17 mSDsluCounter, 26863 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29553 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:40,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 29553 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:25:40,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22755 states. [2021-11-19 14:25:41,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22755 to 22755. [2021-11-19 14:25:41,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22755 states, 15029 states have (on average 1.3024153303613015) internal successors, (19574), 15458 states have internal predecessors, (19574), 6207 states have call successors, (6207), 1520 states have call predecessors, (6207), 1518 states have return successors, (6216), 6052 states have call predecessors, (6216), 6204 states have call successors, (6216) [2021-11-19 14:25:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22755 states to 22755 states and 31997 transitions. [2021-11-19 14:25:41,240 INFO L78 Accepts]: Start accepts. Automaton has 22755 states and 31997 transitions. Word has length 1721 [2021-11-19 14:25:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:41,241 INFO L470 AbstractCegarLoop]: Abstraction has 22755 states and 31997 transitions. [2021-11-19 14:25:41,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 18.75) internal successors, (375), 23 states have internal predecessors, (375), 5 states have call successors, (202), 2 states have call predecessors, (202), 7 states have return successors, (201), 5 states have call predecessors, (201), 5 states have call successors, (201) [2021-11-19 14:25:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 22755 states and 31997 transitions. [2021-11-19 14:25:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1728 [2021-11-19 14:25:41,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:41,280 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 57, 57, 41, 41, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 20, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:41,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-11-19 14:25:41,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-19 14:25:41,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-19 14:25:41,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:25:41,885 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:25:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2065580613, now seen corresponding path program 1 times [2021-11-19 14:25:41,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:25:41,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945331599] [2021-11-19 14:25:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:41,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:25:41,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:25:41,891 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:25:41,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 14:25:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:52,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 5675 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:25:52,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:25:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 24559 backedges. 6051 proven. 7 refuted. 0 times theorem prover too weak. 18501 trivial. 0 not checked. [2021-11-19 14:25:56,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 24559 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 24521 trivial. 0 not checked. [2021-11-19 14:26:00,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:00,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945331599] [2021-11-19 14:26:00,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945331599] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:26:00,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1916786133] [2021-11-19 14:26:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:00,895 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:26:00,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:26:00,896 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:26:00,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-19 14:26:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:08,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 5675 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:26:08,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 24559 backedges. 6051 proven. 7 refuted. 0 times theorem prover too weak. 18501 trivial. 0 not checked. [2021-11-19 14:26:11,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 24559 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 24521 trivial. 0 not checked. [2021-11-19 14:26:16,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1916786133] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:26:16,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56392015] [2021-11-19 14:26:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:16,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:26:16,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:26:16,611 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:26:16,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef206237-ea4a-4a9f-b33a-4ca04b6d2da0/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-19 14:26:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:19,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 5675 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:26:19,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 24559 backedges. 1028 proven. 33 refuted. 0 times theorem prover too weak. 23498 trivial. 0 not checked. [2021-11-19 14:26:22,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 24559 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 24526 trivial. 0 not checked. [2021-11-19 14:26:27,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56392015] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:26:27,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:26:27,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-19 14:26:27,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187231852] [2021-11-19 14:26:27,717 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:26:27,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:26:27,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:26:27,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:26:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:26:27,723 INFO L87 Difference]: Start difference. First operand 22755 states and 31997 transitions. Second operand has 14 states, 14 states have (on average 20.0) internal successors, (280), 14 states have internal predecessors, (280), 10 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (138), 10 states have call predecessors, (138), 10 states have call successors, (138)