./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH --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 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:42:41,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:42:41,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:42:41,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:42:41,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:42:41,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:42:41,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:42:41,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:42:41,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:42:41,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:42:41,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:42:41,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:42:41,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:42:41,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:42:41,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:42:41,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:42:41,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:42:41,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:42:41,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:42:41,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:42:41,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:42:41,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:42:41,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:42:41,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:42:41,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:42:41,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:42:41,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:42:41,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:42:41,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:42:41,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:42:41,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:42:41,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:42:41,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:42:41,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:42:41,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:42:41,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:42:41,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:42:41,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:42:41,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:42:41,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:42:41,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:42:41,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 05:42:41,267 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:42:41,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:42:41,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:42:41,269 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:42:41,269 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:42:41,269 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:42:41,270 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:42:41,270 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:42:41,271 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:42:41,271 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:42:41,271 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:42:41,272 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:42:41,272 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:42:41,272 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:42:41,273 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:42:41,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:42:41,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:42:41,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:42:41,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:42:41,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:42:41,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:42:41,276 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:42:41,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:42:41,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:42:41,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:42:41,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:42:41,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:42:41,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:42:41,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:42:41,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:42:41,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:42:41,280 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:42:41,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:42:41,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:42:41,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:42:41,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:42:41,281 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_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 [2021-11-03 05:42:41,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:42:41,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:42:41,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:42:41,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:42:41,544 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:42:41,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-03 05:42:41,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/data/61854daa7/02dd77aa901d49e2a0c6eeb288d973e3/FLAGce35124b2 [2021-11-03 05:42:42,464 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:42:42,465 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-03 05:42:42,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/data/61854daa7/02dd77aa901d49e2a0c6eeb288d973e3/FLAGce35124b2 [2021-11-03 05:42:42,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/data/61854daa7/02dd77aa901d49e2a0c6eeb288d973e3 [2021-11-03 05:42:42,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:42:42,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:42:42,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:42:42,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:42:42,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:42:42,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:42:42" (1/1) ... [2021-11-03 05:42:42,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247b7983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:42, skipping insertion in model container [2021-11-03 05:42:42,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:42:42" (1/1) ... [2021-11-03 05:42:42,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:42:43,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:42:44,751 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:42:44,753 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:42:44,852 WARN L228 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_577b469b-2e3f-41a3-a8bd-407771e7ebb8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-03 05:42:44,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:42:44,957 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) [2021-11-03 05:42:44,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8157474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:44, skipping insertion in model container [2021-11-03 05:42:44,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:42:44,959 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:42:44,961 INFO L168 Benchmark]: Toolchain (without parser) took 2018.19 ms. Allocated memory was 113.2 MB in the beginning and 155.2 MB in the end (delta: 41.9 MB). Free memory was 82.3 MB in the beginning and 81.7 MB in the end (delta: 615.0 kB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. [2021-11-03 05:42:44,962 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory is still 86.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:42:44,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2015.80 ms. Allocated memory was 113.2 MB in the beginning and 155.2 MB in the end (delta: 41.9 MB). Free memory was 82.0 MB in the beginning and 81.7 MB in the end (delta: 287.0 kB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. [2021-11-03 05:42:44,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory is still 86.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2015.80 ms. Allocated memory was 113.2 MB in the beginning and 155.2 MB in the end (delta: 41.9 MB). Free memory was 82.0 MB in the beginning and 81.7 MB in the end (delta: 287.0 kB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6325]: 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_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH --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 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:42:47,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:42:47,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:42:47,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:42:47,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:42:47,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:42:47,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:42:47,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:42:47,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:42:47,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:42:47,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:42:47,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:42:47,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:42:47,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:42:47,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:42:47,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:42:47,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:42:47,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:42:47,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:42:47,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:42:47,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:42:47,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:42:47,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:42:47,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:42:47,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:42:47,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:42:47,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:42:47,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:42:47,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:42:47,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:42:47,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:42:47,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:42:47,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:42:47,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:42:47,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:42:47,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:42:47,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:42:47,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:42:47,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:42:47,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:42:47,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:42:47,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 05:42:47,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:42:47,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:42:47,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:42:47,334 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:42:47,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:42:47,335 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:42:47,335 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:42:47,335 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:42:47,335 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:42:47,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:42:47,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:42:47,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:42:47,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:42:47,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:42:47,337 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:42:47,338 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:42:47,338 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:42:47,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:42:47,338 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:42:47,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:42:47,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:42:47,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:42:47,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:42:47,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:42:47,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:42:47,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:42:47,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:42:47,340 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:42:47,340 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:42:47,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:42:47,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:42:47,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:42:47,341 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_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 [2021-11-03 05:42:47,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:42:47,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:42:47,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:42:47,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:42:47,759 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:42:47,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-03 05:42:47,824 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/data/00de3c82c/159047d4ca624e508e0600a7bd0b566c/FLAGee3b6e808 [2021-11-03 05:42:48,715 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:42:48,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-03 05:42:48,769 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/data/00de3c82c/159047d4ca624e508e0600a7bd0b566c/FLAGee3b6e808 [2021-11-03 05:42:48,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/data/00de3c82c/159047d4ca624e508e0600a7bd0b566c [2021-11-03 05:42:48,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:42:48,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:42:48,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:42:48,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:42:48,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:42:48,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:42:48" (1/1) ... [2021-11-03 05:42:48,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510a4a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:48, skipping insertion in model container [2021-11-03 05:42:48,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:42:48" (1/1) ... [2021-11-03 05:42:48,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:42:48,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:42:50,998 WARN L228 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_577b469b-2e3f-41a3-a8bd-407771e7ebb8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-03 05:42:51,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:42:51,215 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:42:51,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:42:51,607 WARN L228 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_577b469b-2e3f-41a3-a8bd-407771e7ebb8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-03 05:42:51,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:42:51,693 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:42:52,016 WARN L228 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_577b469b-2e3f-41a3-a8bd-407771e7ebb8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-03 05:42:52,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:42:52,273 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:42:52,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52 WrapperNode [2021-11-03 05:42:52,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:42:52,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:42:52,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:42:52,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:42:52,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (1/1) ... [2021-11-03 05:42:52,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (1/1) ... [2021-11-03 05:42:52,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:42:52,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:42:52,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:42:52,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:42:52,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (1/1) ... [2021-11-03 05:42:52,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (1/1) ... [2021-11-03 05:42:53,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (1/1) ... [2021-11-03 05:42:53,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (1/1) ... [2021-11-03 05:42:53,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (1/1) ... [2021-11-03 05:42:53,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (1/1) ... [2021-11-03 05:42:53,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (1/1) ... [2021-11-03 05:42:53,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:42:53,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:42:53,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:42:53,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:42:53,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (1/1) ... [2021-11-03 05:42:53,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:42:53,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:42:53,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:42:53,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:42:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:42:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 05:42:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:42:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 05:42:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 05:42:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 05:42:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:42:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:42:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 05:42:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 05:42:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 05:42:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:42:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:42:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 05:42:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 05:42:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:42:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 05:42:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 05:42:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 05:42:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 05:42:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 05:42:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 05:42:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:42:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:42:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 05:42:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 05:42:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 05:42:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 05:42:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:42:53,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:43:45,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:43:45,187 INFO L299 CfgBuilder]: Removed 2282 assume(true) statements. [2021-11-03 05:43:45,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:45 BoogieIcfgContainer [2021-11-03 05:43:45,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:43:45,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:43:45,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:43:45,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:43:45,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:42:48" (1/3) ... [2021-11-03 05:43:45,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626b655c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:45, skipping insertion in model container [2021-11-03 05:43:45,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:52" (2/3) ... [2021-11-03 05:43:45,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626b655c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:45, skipping insertion in model container [2021-11-03 05:43:45,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:45" (3/3) ... [2021-11-03 05:43:45,201 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-03 05:43:45,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:43:45,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-03 05:43:45,276 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:43:45,282 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 [2021-11-03 05:43:45,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-03 05:43:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 2084 states, 2071 states have (on average 1.3650410429744084) internal successors, (2827), 2083 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:45,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:43:45,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:45,375 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:45,376 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:43:45,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:45,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1766303631, now seen corresponding path program 1 times [2021-11-03 05:43:45,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:43:45,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975057235] [2021-11-03 05:43:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:45,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:43:45,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:43:45,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:43:45,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:43:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:47,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:43:47,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:47,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:48,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:43:48,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975057235] [2021-11-03 05:43:48,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975057235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:48,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:48,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:43:48,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692715386] [2021-11-03 05:43:48,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:43:48,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:43:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:43:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:43:48,168 INFO L87 Difference]: Start difference. First operand has 2084 states, 2071 states have (on average 1.3650410429744084) internal successors, (2827), 2083 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:48,295 INFO L93 Difference]: Finished difference Result 4164 states and 5649 transitions. [2021-11-03 05:43:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:43:48,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 05:43:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:48,324 INFO L225 Difference]: With dead ends: 4164 [2021-11-03 05:43:48,324 INFO L226 Difference]: Without dead ends: 2025 [2021-11-03 05:43:48,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:43:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2021-11-03 05:43:48,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2025. [2021-11-03 05:43:48,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 2013 states have (on average 1.3288623944361648) internal successors, (2675), 2024 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2675 transitions. [2021-11-03 05:43:48,494 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2675 transitions. Word has length 59 [2021-11-03 05:43:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:48,495 INFO L470 AbstractCegarLoop]: Abstraction has 2025 states and 2675 transitions. [2021-11-03 05:43:48,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2675 transitions. [2021-11-03 05:43:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:43:48,503 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:48,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:48,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:48,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:43:48,725 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:43:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1863285317, now seen corresponding path program 1 times [2021-11-03 05:43:48,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:43:48,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342248903] [2021-11-03 05:43:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:48,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:43:48,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:43:48,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:43:48,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:43:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:50,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:43:50,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:50,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:51,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:43:51,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342248903] [2021-11-03 05:43:51,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342248903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:51,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:51,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:43:51,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588587569] [2021-11-03 05:43:51,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:43:51,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:43:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:43:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:43:51,188 INFO L87 Difference]: Start difference. First operand 2025 states and 2675 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:51,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:51,383 INFO L93 Difference]: Finished difference Result 4027 states and 5331 transitions. [2021-11-03 05:43:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:43:51,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 05:43:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:51,396 INFO L225 Difference]: With dead ends: 4027 [2021-11-03 05:43:51,396 INFO L226 Difference]: Without dead ends: 2030 [2021-11-03 05:43:51,400 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:43:51,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2021-11-03 05:43:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 2030. [2021-11-03 05:43:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2018 states have (on average 1.32804757185332) internal successors, (2680), 2029 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2680 transitions. [2021-11-03 05:43:51,459 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2680 transitions. Word has length 59 [2021-11-03 05:43:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:51,459 INFO L470 AbstractCegarLoop]: Abstraction has 2030 states and 2680 transitions. [2021-11-03 05:43:51,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2680 transitions. [2021-11-03 05:43:51,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 05:43:51,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:51,463 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:43:51,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:51,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:43:51,676 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:43:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash 831598597, now seen corresponding path program 1 times [2021-11-03 05:43:51,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:43:51,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979136023] [2021-11-03 05:43:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:51,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:43:51,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:43:51,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:43:51,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:43:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:53,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:43:53,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:43:54,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:43:54,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:43:54,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979136023] [2021-11-03 05:43:54,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979136023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:43:54,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [536265644] [2021-11-03 05:43:54,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:54,604 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:43:54,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:43:54,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:43:54,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 05:43:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:55,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:43:55,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:43:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:43:56,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:43:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:43:56,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [536265644] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:56,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:43:56,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 05:43:56,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103721564] [2021-11-03 05:43:56,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:43:56,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:43:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:43:56,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:43:56,593 INFO L87 Difference]: Start difference. First operand 2030 states and 2680 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:57,091 INFO L93 Difference]: Finished difference Result 7781 states and 10271 transitions. [2021-11-03 05:43:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:43:57,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-03 05:43:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:57,126 INFO L225 Difference]: With dead ends: 7781 [2021-11-03 05:43:57,126 INFO L226 Difference]: Without dead ends: 5788 [2021-11-03 05:43:57,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:43:57,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2021-11-03 05:43:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 3021. [2021-11-03 05:43:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3021 states, 3009 states have (on average 1.3246925888999668) internal successors, (3986), 3020 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3021 states to 3021 states and 3986 transitions. [2021-11-03 05:43:57,266 INFO L78 Accepts]: Start accepts. Automaton has 3021 states and 3986 transitions. Word has length 63 [2021-11-03 05:43:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:57,267 INFO L470 AbstractCegarLoop]: Abstraction has 3021 states and 3986 transitions. [2021-11-03 05:43:57,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3021 states and 3986 transitions. [2021-11-03 05:43:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 05:43:57,272 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:57,273 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:43:57,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:57,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:43:57,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:43:57,684 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:43:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:57,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2078449491, now seen corresponding path program 1 times [2021-11-03 05:43:57,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:43:57,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038875193] [2021-11-03 05:43:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:57,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:43:57,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:43:57,690 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:43:57,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:43:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:59,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:43:59,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:44:00,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:44:00,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:00,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038875193] [2021-11-03 05:44:00,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038875193] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:00,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1125298401] [2021-11-03 05:44:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:00,440 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:00,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:00,456 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:00,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 05:44:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:01,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:44:01,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:44:02,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:44:02,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1125298401] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:02,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:02,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 05:44:02,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641846620] [2021-11-03 05:44:02,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:44:02,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:44:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:44:02,393 INFO L87 Difference]: Start difference. First operand 3021 states and 3986 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:02,971 INFO L93 Difference]: Finished difference Result 12736 states and 16803 transitions. [2021-11-03 05:44:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:44:02,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 05:44:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:03,028 INFO L225 Difference]: With dead ends: 12736 [2021-11-03 05:44:03,029 INFO L226 Difference]: Without dead ends: 9752 [2021-11-03 05:44:03,042 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:44:03,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9752 states. [2021-11-03 05:44:03,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9752 to 5738. [2021-11-03 05:44:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5738 states, 5726 states have (on average 1.3251833740831296) internal successors, (7588), 5737 states have internal predecessors, (7588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5738 states to 5738 states and 7588 transitions. [2021-11-03 05:44:03,399 INFO L78 Accepts]: Start accepts. Automaton has 5738 states and 7588 transitions. Word has length 64 [2021-11-03 05:44:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:03,399 INFO L470 AbstractCegarLoop]: Abstraction has 5738 states and 7588 transitions. [2021-11-03 05:44:03,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5738 states and 7588 transitions. [2021-11-03 05:44:03,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 05:44:03,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:03,403 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:44:03,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:03,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:03,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:44:03,815 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:44:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2095626156, now seen corresponding path program 1 times [2021-11-03 05:44:03,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:03,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429453657] [2021-11-03 05:44:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:03,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:03,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:03,818 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:03,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:44:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:05,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:44:05,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:44:06,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:44:06,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:06,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429453657] [2021-11-03 05:44:06,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429453657] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:06,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [421576031] [2021-11-03 05:44:06,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:06,469 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:06,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:06,470 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:06,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 05:44:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:07,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:44:07,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:44:08,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:44:08,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [421576031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:08,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:08,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 05:44:08,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966374019] [2021-11-03 05:44:08,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:44:08,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:08,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:44:08,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:44:08,334 INFO L87 Difference]: Start difference. First operand 5738 states and 7588 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:09,281 INFO L93 Difference]: Finished difference Result 24620 states and 32520 transitions. [2021-11-03 05:44:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:44:09,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-03 05:44:09,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:09,359 INFO L225 Difference]: With dead ends: 24620 [2021-11-03 05:44:09,360 INFO L226 Difference]: Without dead ends: 18919 [2021-11-03 05:44:09,372 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:44:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18919 states. [2021-11-03 05:44:09,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18919 to 10932. [2021-11-03 05:44:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10932 states, 10920 states have (on average 1.3247252747252747) internal successors, (14466), 10931 states have internal predecessors, (14466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10932 states to 10932 states and 14466 transitions. [2021-11-03 05:44:09,917 INFO L78 Accepts]: Start accepts. Automaton has 10932 states and 14466 transitions. Word has length 65 [2021-11-03 05:44:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:09,918 INFO L470 AbstractCegarLoop]: Abstraction has 10932 states and 14466 transitions. [2021-11-03 05:44:09,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 10932 states and 14466 transitions. [2021-11-03 05:44:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 05:44:09,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:09,922 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:44:09,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:10,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 05:44:10,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:44:10,337 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:44:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:10,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1309416202, now seen corresponding path program 1 times [2021-11-03 05:44:10,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:10,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292572891] [2021-11-03 05:44:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:10,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:10,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:10,341 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:10,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:44:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:12,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:44:12,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:44:12,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:44:12,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:12,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292572891] [2021-11-03 05:44:12,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292572891] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:12,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [828332332] [2021-11-03 05:44:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:12,971 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:12,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:12,974 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:12,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:44:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:14,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:44:14,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:44:14,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:44:14,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [828332332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:14,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:14,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:44:14,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847709803] [2021-11-03 05:44:14,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:14,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:14,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:44:14,563 INFO L87 Difference]: Start difference. First operand 10932 states and 14466 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:15,594 INFO L93 Difference]: Finished difference Result 26915 states and 35745 transitions. [2021-11-03 05:44:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:15,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-03 05:44:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:15,636 INFO L225 Difference]: With dead ends: 26915 [2021-11-03 05:44:15,637 INFO L226 Difference]: Without dead ends: 16020 [2021-11-03 05:44:15,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:44:15,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16020 states. [2021-11-03 05:44:16,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16020 to 15228. [2021-11-03 05:44:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15228 states, 15216 states have (on average 1.3310988433228181) internal successors, (20254), 15227 states have internal predecessors, (20254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15228 states to 15228 states and 20254 transitions. [2021-11-03 05:44:16,258 INFO L78 Accepts]: Start accepts. Automaton has 15228 states and 20254 transitions. Word has length 65 [2021-11-03 05:44:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:16,258 INFO L470 AbstractCegarLoop]: Abstraction has 15228 states and 20254 transitions. [2021-11-03 05:44:16,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 15228 states and 20254 transitions. [2021-11-03 05:44:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 05:44:16,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:16,262 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:44:16,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:16,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:16,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:16,684 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:44:16,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:16,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1666865372, now seen corresponding path program 1 times [2021-11-03 05:44:16,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:16,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668775711] [2021-11-03 05:44:16,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:16,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:16,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:16,687 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:16,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:44:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:18,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:44:18,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:44:18,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:44:19,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:19,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668775711] [2021-11-03 05:44:19,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668775711] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:19,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [718565461] [2021-11-03 05:44:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:19,322 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:19,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:19,322 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:19,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 05:44:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:20,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:44:20,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:21,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:44:21,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:44:21,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [718565461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:21,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:21,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 05:44:21,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721506492] [2021-11-03 05:44:21,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:44:21,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:44:21,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:44:21,375 INFO L87 Difference]: Start difference. First operand 15228 states and 20254 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:22,810 INFO L93 Difference]: Finished difference Result 62332 states and 82720 transitions. [2021-11-03 05:44:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:44:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 05:44:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:22,919 INFO L225 Difference]: With dead ends: 62332 [2021-11-03 05:44:22,920 INFO L226 Difference]: Without dead ends: 47141 [2021-11-03 05:44:22,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:44:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47141 states. [2021-11-03 05:44:24,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47141 to 28467. [2021-11-03 05:44:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28467 states, 28455 states have (on average 1.3298190124758391) internal successors, (37840), 28466 states have internal predecessors, (37840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28467 states to 28467 states and 37840 transitions. [2021-11-03 05:44:24,124 INFO L78 Accepts]: Start accepts. Automaton has 28467 states and 37840 transitions. Word has length 66 [2021-11-03 05:44:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:24,124 INFO L470 AbstractCegarLoop]: Abstraction has 28467 states and 37840 transitions. [2021-11-03 05:44:24,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 28467 states and 37840 transitions. [2021-11-03 05:44:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 05:44:24,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:24,126 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:44:24,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:24,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:24,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:24,549 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:44:24,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:24,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1804149942, now seen corresponding path program 1 times [2021-11-03 05:44:24,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:24,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822982894] [2021-11-03 05:44:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:24,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:24,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:24,552 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:24,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:44:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:26,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:44:26,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 05:44:26,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 05:44:27,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:27,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822982894] [2021-11-03 05:44:27,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822982894] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:27,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [383582832] [2021-11-03 05:44:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:27,347 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:27,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:27,348 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:27,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:44:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:28,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:44:28,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-03 05:44:29,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-03 05:44:29,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [383582832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:29,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:29,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 05:44:29,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112308802] [2021-11-03 05:44:29,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:44:29,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:29,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:44:29,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:44:29,528 INFO L87 Difference]: Start difference. First operand 28467 states and 37840 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:31,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:31,749 INFO L93 Difference]: Finished difference Result 90867 states and 120628 transitions. [2021-11-03 05:44:31,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:44:31,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-03 05:44:31,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:31,887 INFO L225 Difference]: With dead ends: 90867 [2021-11-03 05:44:31,888 INFO L226 Difference]: Without dead ends: 62437 [2021-11-03 05:44:31,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:44:31,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62437 states. [2021-11-03 05:44:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62437 to 28547. [2021-11-03 05:44:33,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28547 states, 28535 states have (on average 1.328894340283862) internal successors, (37920), 28546 states have internal predecessors, (37920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:33,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28547 states to 28547 states and 37920 transitions. [2021-11-03 05:44:33,527 INFO L78 Accepts]: Start accepts. Automaton has 28547 states and 37920 transitions. Word has length 72 [2021-11-03 05:44:33,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:33,528 INFO L470 AbstractCegarLoop]: Abstraction has 28547 states and 37920 transitions. [2021-11-03 05:44:33,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:33,528 INFO L276 IsEmpty]: Start isEmpty. Operand 28547 states and 37920 transitions. [2021-11-03 05:44:33,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-03 05:44:33,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:33,532 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:44:33,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:33,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:33,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:44:33,945 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:44:33,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:33,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1084130789, now seen corresponding path program 1 times [2021-11-03 05:44:33,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:33,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081860372] [2021-11-03 05:44:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:33,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:33,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:33,952 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:33,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:44:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:36,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:44:36,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 05:44:37,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 05:44:38,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:38,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081860372] [2021-11-03 05:44:38,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081860372] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:38,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [521061468] [2021-11-03 05:44:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:38,185 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:38,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:38,186 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:38,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:44:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:39,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:44:39,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:44:40,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:44:40,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [521061468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:40,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:40,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:44:40,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025440524] [2021-11-03 05:44:40,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:40,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:40,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:40,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:44:40,891 INFO L87 Difference]: Start difference. First operand 28547 states and 37920 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:42,810 INFO L93 Difference]: Finished difference Result 81087 states and 107906 transitions. [2021-11-03 05:44:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:42,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-03 05:44:42,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:43,086 INFO L225 Difference]: With dead ends: 81087 [2021-11-03 05:44:43,086 INFO L226 Difference]: Without dead ends: 52577 [2021-11-03 05:44:43,125 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:44:43,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52577 states. [2021-11-03 05:44:45,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52577 to 52521. [2021-11-03 05:44:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52521 states, 52509 states have (on average 1.3321335390123599) internal successors, (69949), 52520 states have internal predecessors, (69949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52521 states to 52521 states and 69949 transitions. [2021-11-03 05:44:45,426 INFO L78 Accepts]: Start accepts. Automaton has 52521 states and 69949 transitions. Word has length 160 [2021-11-03 05:44:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:45,427 INFO L470 AbstractCegarLoop]: Abstraction has 52521 states and 69949 transitions. [2021-11-03 05:44:45,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 52521 states and 69949 transitions. [2021-11-03 05:44:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-03 05:44:45,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:45,432 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:44:45,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:45,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:45,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:45,836 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:44:45,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:45,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1766752753, now seen corresponding path program 1 times [2021-11-03 05:44:45,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:45,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456916856] [2021-11-03 05:44:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:45,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:45,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:45,839 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:45,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 05:44:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:48,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:44:48,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 05:44:49,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 05:44:50,167 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:44:50,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456916856] [2021-11-03 05:44:50,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456916856] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:44:50,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [125566916] [2021-11-03 05:44:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:50,168 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:50,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:44:50,169 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:44:50,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 05:44:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:44:52,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:44:52,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:44:53,192 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:44:53,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:44:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:44:53,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [125566916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:44:53,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:44:53,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:44:53,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087365691] [2021-11-03 05:44:53,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:44:53,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:44:53,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:44:53,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:44:53,707 INFO L87 Difference]: Start difference. First operand 52521 states and 69949 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:56,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:44:56,309 INFO L93 Difference]: Finished difference Result 105005 states and 139859 transitions. [2021-11-03 05:44:56,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:44:56,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-11-03 05:44:56,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:44:56,396 INFO L225 Difference]: With dead ends: 105005 [2021-11-03 05:44:56,396 INFO L226 Difference]: Without dead ends: 52521 [2021-11-03 05:44:56,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:44:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52521 states. [2021-11-03 05:44:58,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52521 to 52521. [2021-11-03 05:44:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52521 states, 52509 states have (on average 1.3315241196747225) internal successors, (69917), 52520 states have internal predecessors, (69917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52521 states to 52521 states and 69917 transitions. [2021-11-03 05:44:58,825 INFO L78 Accepts]: Start accepts. Automaton has 52521 states and 69917 transitions. Word has length 179 [2021-11-03 05:44:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:44:58,825 INFO L470 AbstractCegarLoop]: Abstraction has 52521 states and 69917 transitions. [2021-11-03 05:44:58,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:44:58,825 INFO L276 IsEmpty]: Start isEmpty. Operand 52521 states and 69917 transitions. [2021-11-03 05:44:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-03 05:44:58,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:44:58,829 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:44:58,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-03 05:44:59,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-03 05:44:59,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:44:59,232 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:44:59,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:44:59,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1104683941, now seen corresponding path program 1 times [2021-11-03 05:44:59,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:44:59,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454760852] [2021-11-03 05:44:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:44:59,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:44:59,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:44:59,237 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:44:59,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 05:45:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:02,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:45:02,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 05:45:03,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 05:45:04,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:04,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454760852] [2021-11-03 05:45:04,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454760852] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:45:04,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1639400557] [2021-11-03 05:45:04,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:04,045 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:04,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:45:04,046 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:45:04,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 05:45:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:06,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:45:06,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 05:45:07,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 05:45:08,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1639400557] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:08,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:45:08,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:45:08,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834301260] [2021-11-03 05:45:08,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:45:08,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:08,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:45:08,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:45:08,310 INFO L87 Difference]: Start difference. First operand 52521 states and 69917 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:12,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:12,959 INFO L93 Difference]: Finished difference Result 157441 states and 209593 transitions. [2021-11-03 05:45:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:45:12,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2021-11-03 05:45:12,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:13,158 INFO L225 Difference]: With dead ends: 157441 [2021-11-03 05:45:13,158 INFO L226 Difference]: Without dead ends: 104957 [2021-11-03 05:45:13,222 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:45:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104957 states. [2021-11-03 05:45:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104957 to 104917. [2021-11-03 05:45:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104917 states, 104905 states have (on average 1.3314046041656737) internal successors, (139671), 104916 states have internal predecessors, (139671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104917 states to 104917 states and 139671 transitions. [2021-11-03 05:45:19,060 INFO L78 Accepts]: Start accepts. Automaton has 104917 states and 139671 transitions. Word has length 192 [2021-11-03 05:45:19,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:19,061 INFO L470 AbstractCegarLoop]: Abstraction has 104917 states and 139671 transitions. [2021-11-03 05:45:19,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 104917 states and 139671 transitions. [2021-11-03 05:45:19,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-03 05:45:19,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:19,092 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:45:19,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:19,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:19,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:45:19,494 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 05:45:19,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1432305376, now seen corresponding path program 1 times [2021-11-03 05:45:19,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:19,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4071493] [2021-11-03 05:45:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:19,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:19,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:19,499 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:19,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 05:45:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:23,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:45:23,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 05:45:23,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 05:45:24,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:24,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4071493] [2021-11-03 05:45:24,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4071493] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:45:24,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [126130496] [2021-11-03 05:45:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:24,817 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:24,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:45:24,829 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:45:24,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577b469b-2e3f-41a3-a8bd-407771e7ebb8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 05:45:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:27,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:45:27,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 05:45:28,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 05:45:29,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [126130496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:29,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:45:29,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:45:29,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475293842] [2021-11-03 05:45:29,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:45:29,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:29,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:45:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:45:29,508 INFO L87 Difference]: Start difference. First operand 104917 states and 139671 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:35,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:35,347 INFO L93 Difference]: Finished difference Result 209797 states and 279303 transitions. [2021-11-03 05:45:35,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:45:35,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-11-03 05:45:35,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:35,559 INFO L225 Difference]: With dead ends: 209797 [2021-11-03 05:45:35,559 INFO L226 Difference]: Without dead ends: 104917 [2021-11-03 05:45:35,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:45:35,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104917 states.