./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/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_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/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 32bit --witnessprinter.graph.data.programhash 8ed4163e8f042a84d9cdccd4fee3ee0ba89fdce83cd991779acec4a51d9a650c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:16:50,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:16:50,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:16:50,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:16:50,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:16:50,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:16:50,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:16:50,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:16:50,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:16:50,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:16:50,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:16:50,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:16:50,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:16:50,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:16:50,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:16:50,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:16:50,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:16:50,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:16:50,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:16:50,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:16:50,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:16:50,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:16:50,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:16:50,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:16:50,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:16:50,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:16:50,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:16:50,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:16:50,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:16:50,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:16:50,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:16:50,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:16:50,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:16:50,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:16:50,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:16:50,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:16:50,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:16:50,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:16:50,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:16:50,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:16:50,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:16:50,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:16:50,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:16:50,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:16:50,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:16:50,304 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:16:50,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:16:50,305 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:16:50,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:16:50,305 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:16:50,311 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:16:50,311 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:16:50,312 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:16:50,313 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:16:50,313 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:16:50,313 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:16:50,313 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:16:50,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:16:50,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:16:50,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:16:50,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:16:50,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:16:50,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:16:50,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:16:50,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:16:50,316 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:16:50,316 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:16:50,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:16:50,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:16:50,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:16:50,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:16:50,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:16:50,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:50,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:16:50,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:16:50,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:16:50,320 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:16:50,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:16:50,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:16:50,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:16:50,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:16:50,321 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_47776bde-2018-4e36-b635-ff5afce0df3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ed4163e8f042a84d9cdccd4fee3ee0ba89fdce83cd991779acec4a51d9a650c [2021-11-03 05:16:50,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:16:50,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:16:50,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:16:50,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:16:50,619 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:16:50,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2021-11-03 05:16:50,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/data/8eb6ef60b/bab5cb95a25b437782bbf5022c3bc858/FLAGb33c13071 [2021-11-03 05:16:51,266 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:16:51,267 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2021-11-03 05:16:51,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/data/8eb6ef60b/bab5cb95a25b437782bbf5022c3bc858/FLAGb33c13071 [2021-11-03 05:16:51,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/data/8eb6ef60b/bab5cb95a25b437782bbf5022c3bc858 [2021-11-03 05:16:51,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:16:51,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:16:51,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:51,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:16:51,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:16:51,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:51" (1/1) ... [2021-11-03 05:16:51,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a48c634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:51, skipping insertion in model container [2021-11-03 05:16:51,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:51" (1/1) ... [2021-11-03 05:16:51,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:16:51,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:52,254 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_47776bde-2018-4e36-b635-ff5afce0df3a/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c[68958,68971] [2021-11-03 05:16:52,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:52,281 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 05:16:52,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5948078d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:52, skipping insertion in model container [2021-11-03 05:16:52,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:52,283 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:16:52,286 INFO L168 Benchmark]: Toolchain (without parser) took 743.51 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 57.7 MB in the beginning and 83.2 MB in the end (delta: -25.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:16:52,288 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory was 60.9 MB in the beginning and 60.9 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:16:52,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.62 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 57.4 MB in the beginning and 83.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:16:52,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory was 60.9 MB in the beginning and 60.9 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 740.62 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 57.4 MB in the beginning and 83.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1375]: 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_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/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_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/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 32bit --witnessprinter.graph.data.programhash 8ed4163e8f042a84d9cdccd4fee3ee0ba89fdce83cd991779acec4a51d9a650c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:16:54,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:16:54,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:16:54,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:16:54,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:16:54,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:16:54,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:16:54,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:16:54,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:16:54,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:16:54,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:16:54,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:16:54,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:16:54,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:16:54,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:16:54,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:16:54,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:16:54,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:16:54,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:16:54,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:16:54,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:16:54,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:16:54,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:16:54,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:16:54,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:16:54,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:16:54,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:16:54,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:16:54,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:16:54,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:16:54,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:16:54,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:16:54,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:16:54,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:16:54,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:16:54,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:16:54,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:16:54,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:16:54,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:16:54,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:16:54,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:16:54,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:16:54,731 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:16:54,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:16:54,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:16:54,734 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:16:54,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:16:54,735 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:16:54,735 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:16:54,735 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:16:54,735 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:16:54,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:16:54,738 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:16:54,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:16:54,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:16:54,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:16:54,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:16:54,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:16:54,739 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:16:54,740 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:16:54,740 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:16:54,740 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:16:54,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:16:54,741 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:16:54,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:16:54,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:16:54,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:16:54,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:16:54,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:54,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:16:54,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:16:54,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:16:54,743 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:16:54,743 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:16:54,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:16:54,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:16:54,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:16:54,744 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_47776bde-2018-4e36-b635-ff5afce0df3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ed4163e8f042a84d9cdccd4fee3ee0ba89fdce83cd991779acec4a51d9a650c [2021-11-03 05:16:55,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:16:55,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:16:55,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:16:55,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:16:55,126 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:16:55,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2021-11-03 05:16:55,195 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/data/57f15c4eb/8f259dd360284cd0a32a05e5c59b259a/FLAG635528cdd [2021-11-03 05:16:55,902 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:16:55,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2021-11-03 05:16:55,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/data/57f15c4eb/8f259dd360284cd0a32a05e5c59b259a/FLAG635528cdd [2021-11-03 05:16:56,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/data/57f15c4eb/8f259dd360284cd0a32a05e5c59b259a [2021-11-03 05:16:56,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:16:56,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:16:56,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:56,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:16:56,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:16:56,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:56" (1/1) ... [2021-11-03 05:16:56,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39359aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:56, skipping insertion in model container [2021-11-03 05:16:56,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:56" (1/1) ... [2021-11-03 05:16:56,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:16:56,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:56,766 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_47776bde-2018-4e36-b635-ff5afce0df3a/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c[68958,68971] [2021-11-03 05:16:56,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:56,797 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:16:56,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:56,930 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_47776bde-2018-4e36-b635-ff5afce0df3a/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c[68958,68971] [2021-11-03 05:16:56,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:56,941 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:16:57,047 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_47776bde-2018-4e36-b635-ff5afce0df3a/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c[68958,68971] [2021-11-03 05:16:57,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:57,078 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:16:57,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57 WrapperNode [2021-11-03 05:16:57,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:57,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:57,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:16:57,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:16:57,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (1/1) ... [2021-11-03 05:16:57,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (1/1) ... [2021-11-03 05:16:57,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:57,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:16:57,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:16:57,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:16:57,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (1/1) ... [2021-11-03 05:16:57,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (1/1) ... [2021-11-03 05:16:57,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (1/1) ... [2021-11-03 05:16:57,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (1/1) ... [2021-11-03 05:16:57,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (1/1) ... [2021-11-03 05:16:57,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (1/1) ... [2021-11-03 05:16:57,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (1/1) ... [2021-11-03 05:16:58,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:16:58,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:16:58,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:16:58,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:16:58,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (1/1) ... [2021-11-03 05:16:58,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:58,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:16:58,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:16:58,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:16:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:16:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:16:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:16:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:17:11,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:17:11,532 INFO L299 CfgBuilder]: Removed 1143 assume(true) statements. [2021-11-03 05:17:11,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:17:11 BoogieIcfgContainer [2021-11-03 05:17:11,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:17:11,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:17:11,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:17:11,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:17:11,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:16:56" (1/3) ... [2021-11-03 05:17:11,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14338e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:17:11, skipping insertion in model container [2021-11-03 05:17:11,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:57" (2/3) ... [2021-11-03 05:17:11,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14338e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:17:11, skipping insertion in model container [2021-11-03 05:17:11,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:17:11" (3/3) ... [2021-11-03 05:17:11,553 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product03.cil.c [2021-11-03 05:17:11,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:17:11,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 05:17:11,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:17:11,674 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 05:17:11,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 05:17:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 5427 states, 5421 states have (on average 1.8989116399188342) internal successors, (10294), 5426 states have internal predecessors, (10294), 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 05:17:11,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:17:11,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:11,840 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] [2021-11-03 05:17:11,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:11,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:11,851 INFO L85 PathProgramCache]: Analyzing trace with hash 770856702, now seen corresponding path program 1 times [2021-11-03 05:17:11,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:11,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757055927] [2021-11-03 05:17:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:11,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:11,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:11,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:11,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:17:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:12,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:17:12,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:12,415 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 05:17:12,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:12,535 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 05:17:12,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:12,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757055927] [2021-11-03 05:17:12,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757055927] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:12,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:12,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:17:12,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958563572] [2021-11-03 05:17:12,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:12,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:12,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:12,574 INFO L87 Difference]: Start difference. First operand has 5427 states, 5421 states have (on average 1.8989116399188342) internal successors, (10294), 5426 states have internal predecessors, (10294), 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 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 05:17:13,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:13,247 INFO L93 Difference]: Finished difference Result 15250 states and 28923 transitions. [2021-11-03 05:17:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:13,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 44 [2021-11-03 05:17:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:13,328 INFO L225 Difference]: With dead ends: 15250 [2021-11-03 05:17:13,329 INFO L226 Difference]: Without dead ends: 9823 [2021-11-03 05:17:13,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 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 05:17:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9823 states. [2021-11-03 05:17:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9823 to 5423. [2021-11-03 05:17:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5423 states, 5418 states have (on average 1.8962716869693614) internal successors, (10274), 5422 states have internal predecessors, (10274), 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 05:17:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5423 states to 5423 states and 10274 transitions. [2021-11-03 05:17:13,629 INFO L78 Accepts]: Start accepts. Automaton has 5423 states and 10274 transitions. Word has length 44 [2021-11-03 05:17:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:13,630 INFO L470 AbstractCegarLoop]: Abstraction has 5423 states and 10274 transitions. [2021-11-03 05:17:13,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 05:17:13,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5423 states and 10274 transitions. [2021-11-03 05:17:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 05:17:13,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:13,634 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] [2021-11-03 05:17:13,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:13,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:13,855 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:13,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash 190982898, now seen corresponding path program 1 times [2021-11-03 05:17:13,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:13,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887784905] [2021-11-03 05:17:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:13,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:13,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:13,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:13,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:17:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:14,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:17:14,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:14,366 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 05:17:14,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:14,525 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 05:17:14,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:14,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887784905] [2021-11-03 05:17:14,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887784905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:14,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:14,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:17:14,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175377823] [2021-11-03 05:17:14,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:14,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:17:14,530 INFO L87 Difference]: Start difference. First operand 5423 states and 10274 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 05:17:15,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:15,674 INFO L93 Difference]: Finished difference Result 21657 states and 41021 transitions. [2021-11-03 05:17:15,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:17:15,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 49 [2021-11-03 05:17:15,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:15,779 INFO L225 Difference]: With dead ends: 21657 [2021-11-03 05:17:15,779 INFO L226 Difference]: Without dead ends: 16255 [2021-11-03 05:17:15,791 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:17:15,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16255 states. [2021-11-03 05:17:16,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16255 to 5401. [2021-11-03 05:17:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5401 states, 5396 states have (on average 1.894551519644181) internal successors, (10223), 5400 states have internal predecessors, (10223), 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 05:17:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 10223 transitions. [2021-11-03 05:17:16,227 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 10223 transitions. Word has length 49 [2021-11-03 05:17:16,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:16,229 INFO L470 AbstractCegarLoop]: Abstraction has 5401 states and 10223 transitions. [2021-11-03 05:17:16,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 05:17:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 10223 transitions. [2021-11-03 05:17:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 05:17:16,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:16,242 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] [2021-11-03 05:17:16,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:16,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:16,461 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:16,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1439760622, now seen corresponding path program 1 times [2021-11-03 05:17:16,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:16,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216260293] [2021-11-03 05:17:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:16,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:16,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:16,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:16,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:17:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:16,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:17:16,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:16,966 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 05:17:16,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:17,105 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 05:17:17,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:17,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216260293] [2021-11-03 05:17:17,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216260293] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:17,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:17,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:17:17,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765135573] [2021-11-03 05:17:17,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:17,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:17,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:17,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:17,108 INFO L87 Difference]: Start difference. First operand 5401 states and 10223 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 05:17:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:17,567 INFO L93 Difference]: Finished difference Result 15109 states and 28611 transitions. [2021-11-03 05:17:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:17,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 50 [2021-11-03 05:17:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:17,601 INFO L225 Difference]: With dead ends: 15109 [2021-11-03 05:17:17,602 INFO L226 Difference]: Without dead ends: 9729 [2021-11-03 05:17:17,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 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 05:17:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2021-11-03 05:17:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 5401. [2021-11-03 05:17:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5401 states, 5396 states have (on average 1.8934395848776873) internal successors, (10217), 5400 states have internal predecessors, (10217), 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 05:17:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 10217 transitions. [2021-11-03 05:17:17,932 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 10217 transitions. Word has length 50 [2021-11-03 05:17:17,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:17,932 INFO L470 AbstractCegarLoop]: Abstraction has 5401 states and 10217 transitions. [2021-11-03 05:17:17,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 05:17:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 10217 transitions. [2021-11-03 05:17:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 05:17:17,937 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:17,937 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] [2021-11-03 05:17:17,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:18,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:18,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:18,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:18,155 INFO L85 PathProgramCache]: Analyzing trace with hash 155893919, now seen corresponding path program 1 times [2021-11-03 05:17:18,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:18,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989570066] [2021-11-03 05:17:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:18,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:18,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:18,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:18,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:17:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:18,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:17:18,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:18,714 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 05:17:18,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:18,890 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 05:17:18,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:18,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989570066] [2021-11-03 05:17:18,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989570066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:18,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:18,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:17:18,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754059616] [2021-11-03 05:17:18,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:17:18,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:18,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:17:18,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:17:18,893 INFO L87 Difference]: Start difference. First operand 5401 states and 10217 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 05:17:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:20,660 INFO L93 Difference]: Finished difference Result 30252 states and 57272 transitions. [2021-11-03 05:17:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:17:20,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 55 [2021-11-03 05:17:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:20,742 INFO L225 Difference]: With dead ends: 30252 [2021-11-03 05:17:20,742 INFO L226 Difference]: Without dead ends: 24875 [2021-11-03 05:17:20,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:17:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24875 states. [2021-11-03 05:17:21,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24875 to 5403. [2021-11-03 05:17:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5403 states, 5398 states have (on average 1.8921822897369396) internal successors, (10214), 5402 states have internal predecessors, (10214), 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 05:17:21,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 10214 transitions. [2021-11-03 05:17:21,110 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 10214 transitions. Word has length 55 [2021-11-03 05:17:21,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:21,111 INFO L470 AbstractCegarLoop]: Abstraction has 5403 states and 10214 transitions. [2021-11-03 05:17:21,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 05:17:21,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 10214 transitions. [2021-11-03 05:17:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 05:17:21,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:21,114 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] [2021-11-03 05:17:21,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:21,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:21,332 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash -907086511, now seen corresponding path program 1 times [2021-11-03 05:17:21,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:21,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756241864] [2021-11-03 05:17:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:21,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:21,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:21,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:21,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:17:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:21,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:17:21,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:21,973 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 05:17:21,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:22,156 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 05:17:22,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:22,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756241864] [2021-11-03 05:17:22,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756241864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:22,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:22,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:17:22,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920747657] [2021-11-03 05:17:22,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:22,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:17:22,159 INFO L87 Difference]: Start difference. First operand 5403 states and 10214 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 05:17:25,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:25,287 INFO L93 Difference]: Finished difference Result 19437 states and 36924 transitions. [2021-11-03 05:17:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:17:25,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 56 [2021-11-03 05:17:25,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:25,319 INFO L225 Difference]: With dead ends: 19437 [2021-11-03 05:17:25,320 INFO L226 Difference]: Without dead ends: 14064 [2021-11-03 05:17:25,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:17:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14064 states. [2021-11-03 05:17:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14064 to 5403. [2021-11-03 05:17:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5403 states, 5398 states have (on average 1.842534271952575) internal successors, (9946), 5402 states have internal predecessors, (9946), 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 05:17:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 9946 transitions. [2021-11-03 05:17:25,552 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 9946 transitions. Word has length 56 [2021-11-03 05:17:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:25,553 INFO L470 AbstractCegarLoop]: Abstraction has 5403 states and 9946 transitions. [2021-11-03 05:17:25,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 05:17:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 9946 transitions. [2021-11-03 05:17:25,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 05:17:25,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:25,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:25,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:25,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:25,773 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:25,775 INFO L85 PathProgramCache]: Analyzing trace with hash -17617253, now seen corresponding path program 1 times [2021-11-03 05:17:25,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:25,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869993799] [2021-11-03 05:17:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:25,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:25,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:25,779 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:25,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:17:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:26,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:26,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:26,367 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 05:17:26,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:26,565 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 05:17:26,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:26,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869993799] [2021-11-03 05:17:26,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869993799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:26,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:26,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:17:26,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62558689] [2021-11-03 05:17:26,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:26,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:26,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:26,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:17:26,567 INFO L87 Difference]: Start difference. First operand 5403 states and 9946 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 05:17:29,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:29,162 INFO L93 Difference]: Finished difference Result 27107 states and 50757 transitions. [2021-11-03 05:17:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:17:29,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2021-11-03 05:17:29,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:29,200 INFO L225 Difference]: With dead ends: 27107 [2021-11-03 05:17:29,200 INFO L226 Difference]: Without dead ends: 21752 [2021-11-03 05:17:29,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:17:29,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21752 states. [2021-11-03 05:17:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21752 to 7472. [2021-11-03 05:17:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7472 states, 7467 states have (on average 1.8430427213070846) internal successors, (13762), 7471 states have internal predecessors, (13762), 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 05:17:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7472 states to 7472 states and 13762 transitions. [2021-11-03 05:17:29,556 INFO L78 Accepts]: Start accepts. Automaton has 7472 states and 13762 transitions. Word has length 68 [2021-11-03 05:17:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:29,557 INFO L470 AbstractCegarLoop]: Abstraction has 7472 states and 13762 transitions. [2021-11-03 05:17:29,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 05:17:29,557 INFO L276 IsEmpty]: Start isEmpty. Operand 7472 states and 13762 transitions. [2021-11-03 05:17:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 05:17:29,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:29,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:29,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:29,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:29,774 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:29,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:29,775 INFO L85 PathProgramCache]: Analyzing trace with hash 712103995, now seen corresponding path program 1 times [2021-11-03 05:17:29,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:29,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518807653] [2021-11-03 05:17:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:29,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:29,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:29,777 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:29,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:17:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:30,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:17:30,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:30,379 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 05:17:30,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:30,556 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 05:17:30,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:30,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518807653] [2021-11-03 05:17:30,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518807653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:30,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:30,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:17:30,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397149383] [2021-11-03 05:17:30,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:17:30,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:30,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:17:30,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:30,559 INFO L87 Difference]: Start difference. First operand 7472 states and 13762 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 05:17:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:33,759 INFO L93 Difference]: Finished difference Result 35684 states and 66227 transitions. [2021-11-03 05:17:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:17:33,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2021-11-03 05:17:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:33,804 INFO L225 Difference]: With dead ends: 35684 [2021-11-03 05:17:33,804 INFO L226 Difference]: Without dead ends: 28259 [2021-11-03 05:17:33,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:17:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28259 states. [2021-11-03 05:17:34,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28259 to 9614. [2021-11-03 05:17:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9614 states, 9609 states have (on average 1.8412946196274327) internal successors, (17693), 9613 states have internal predecessors, (17693), 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 05:17:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9614 states to 9614 states and 17693 transitions. [2021-11-03 05:17:34,298 INFO L78 Accepts]: Start accepts. Automaton has 9614 states and 17693 transitions. Word has length 70 [2021-11-03 05:17:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:34,299 INFO L470 AbstractCegarLoop]: Abstraction has 9614 states and 17693 transitions. [2021-11-03 05:17:34,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 05:17:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 9614 states and 17693 transitions. [2021-11-03 05:17:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 05:17:34,301 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:34,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:34,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:34,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:34,502 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:34,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:34,502 INFO L85 PathProgramCache]: Analyzing trace with hash 372239342, now seen corresponding path program 1 times [2021-11-03 05:17:34,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:34,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837354572] [2021-11-03 05:17:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:34,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:34,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:34,505 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:34,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:17:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:34,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:17:34,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:35,122 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 05:17:35,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:35,299 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 05:17:35,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:35,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837354572] [2021-11-03 05:17:35,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837354572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:35,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:35,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:17:35,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925744502] [2021-11-03 05:17:35,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:35,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:35,301 INFO L87 Difference]: Start difference. First operand 9614 states and 17693 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 05:17:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:38,947 INFO L93 Difference]: Finished difference Result 35497 states and 66116 transitions. [2021-11-03 05:17:38,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:17:38,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-03 05:17:38,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:38,986 INFO L225 Difference]: With dead ends: 35497 [2021-11-03 05:17:38,986 INFO L226 Difference]: Without dead ends: 25917 [2021-11-03 05:17:39,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:39,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25917 states. [2021-11-03 05:17:39,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25917 to 16621. [2021-11-03 05:17:39,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16621 states, 16616 states have (on average 1.8278165623495426) internal successors, (30371), 16620 states have internal predecessors, (30371), 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 05:17:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16621 states to 16621 states and 30371 transitions. [2021-11-03 05:17:39,596 INFO L78 Accepts]: Start accepts. Automaton has 16621 states and 30371 transitions. Word has length 71 [2021-11-03 05:17:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:39,597 INFO L470 AbstractCegarLoop]: Abstraction has 16621 states and 30371 transitions. [2021-11-03 05:17:39,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 05:17:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 16621 states and 30371 transitions. [2021-11-03 05:17:39,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 05:17:39,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:39,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:39,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:39,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:39,813 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash 341611366, now seen corresponding path program 1 times [2021-11-03 05:17:39,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:39,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999859961] [2021-11-03 05:17:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:39,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:39,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:39,815 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:39,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:17:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:40,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:17:40,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:40,475 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 05:17:40,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:40,660 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 05:17:40,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:40,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999859961] [2021-11-03 05:17:40,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999859961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:40,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:40,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:17:40,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118667396] [2021-11-03 05:17:40,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:17:40,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:40,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:17:40,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:40,663 INFO L87 Difference]: Start difference. First operand 16621 states and 30371 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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 05:17:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:43,658 INFO L93 Difference]: Finished difference Result 134906 states and 247081 transitions. [2021-11-03 05:17:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:17:43,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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 73 [2021-11-03 05:17:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:44,006 INFO L225 Difference]: With dead ends: 134906 [2021-11-03 05:17:44,006 INFO L226 Difference]: Without dead ends: 118328 [2021-11-03 05:17:44,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:17:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118328 states. [2021-11-03 05:17:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118328 to 32245. [2021-11-03 05:17:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32245 states, 32240 states have (on average 1.828908188585608) internal successors, (58964), 32244 states have internal predecessors, (58964), 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 05:17:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32245 states to 32245 states and 58964 transitions. [2021-11-03 05:17:46,058 INFO L78 Accepts]: Start accepts. Automaton has 32245 states and 58964 transitions. Word has length 73 [2021-11-03 05:17:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:46,059 INFO L470 AbstractCegarLoop]: Abstraction has 32245 states and 58964 transitions. [2021-11-03 05:17:46,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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 05:17:46,059 INFO L276 IsEmpty]: Start isEmpty. Operand 32245 states and 58964 transitions. [2021-11-03 05:17:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 05:17:46,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:46,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:46,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:46,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:46,275 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -502394136, now seen corresponding path program 1 times [2021-11-03 05:17:46,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:46,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639414035] [2021-11-03 05:17:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:46,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:46,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:46,277 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:46,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:17:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:46,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:17:46,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:46,940 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 05:17:46,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:47,130 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 05:17:47,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:47,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639414035] [2021-11-03 05:17:47,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639414035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:47,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:47,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:17:47,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780895372] [2021-11-03 05:17:47,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:17:47,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:47,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:17:47,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:47,132 INFO L87 Difference]: Start difference. First operand 32245 states and 58964 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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 05:17:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:48,133 INFO L93 Difference]: Finished difference Result 52028 states and 93970 transitions. [2021-11-03 05:17:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:17:48,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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 73 [2021-11-03 05:17:48,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:48,176 INFO L225 Difference]: With dead ends: 52028 [2021-11-03 05:17:48,177 INFO L226 Difference]: Without dead ends: 33295 [2021-11-03 05:17:48,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:48,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33295 states. [2021-11-03 05:17:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33295 to 33285. [2021-11-03 05:17:49,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33285 states, 33280 states have (on average 1.8159254807692307) internal successors, (60434), 33284 states have internal predecessors, (60434), 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 05:17:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33285 states to 33285 states and 60434 transitions. [2021-11-03 05:17:49,342 INFO L78 Accepts]: Start accepts. Automaton has 33285 states and 60434 transitions. Word has length 73 [2021-11-03 05:17:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:49,343 INFO L470 AbstractCegarLoop]: Abstraction has 33285 states and 60434 transitions. [2021-11-03 05:17:49,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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 05:17:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 33285 states and 60434 transitions. [2021-11-03 05:17:49,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 05:17:49,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:49,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:49,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:49,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:49,565 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:49,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1203994010, now seen corresponding path program 1 times [2021-11-03 05:17:49,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:49,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121499530] [2021-11-03 05:17:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:49,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:49,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:49,568 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:49,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:17:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:50,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:50,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:50,323 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 05:17:50,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:50,515 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 05:17:50,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:50,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121499530] [2021-11-03 05:17:50,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121499530] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:50,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:50,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:17:50,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892264838] [2021-11-03 05:17:50,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:50,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:50,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:50,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:17:50,517 INFO L87 Difference]: Start difference. First operand 33285 states and 60434 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 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 05:17:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:54,197 INFO L93 Difference]: Finished difference Result 81894 states and 150123 transitions. [2021-11-03 05:17:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:17:54,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2021-11-03 05:17:54,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:54,274 INFO L225 Difference]: With dead ends: 81894 [2021-11-03 05:17:54,274 INFO L226 Difference]: Without dead ends: 63198 [2021-11-03 05:17:54,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:17:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63198 states. [2021-11-03 05:17:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63198 to 33237. [2021-11-03 05:17:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33237 states, 33232 states have (on average 1.8156596051998075) internal successors, (60338), 33236 states have internal predecessors, (60338), 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 05:17:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33237 states to 33237 states and 60338 transitions. [2021-11-03 05:17:55,757 INFO L78 Accepts]: Start accepts. Automaton has 33237 states and 60338 transitions. Word has length 73 [2021-11-03 05:17:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:55,757 INFO L470 AbstractCegarLoop]: Abstraction has 33237 states and 60338 transitions. [2021-11-03 05:17:55,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 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 05:17:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 33237 states and 60338 transitions. [2021-11-03 05:17:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 05:17:55,759 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:55,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:55,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:55,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:55,960 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:17:55,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:55,960 INFO L85 PathProgramCache]: Analyzing trace with hash -739112864, now seen corresponding path program 1 times [2021-11-03 05:17:55,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:55,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103734745] [2021-11-03 05:17:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:55,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:55,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:55,962 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:55,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:17:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:56,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:17:56,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:56,725 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 05:17:56,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:56,927 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 05:17:56,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:56,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103734745] [2021-11-03 05:17:56,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103734745] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:56,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:56,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:17:56,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328906430] [2021-11-03 05:17:56,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:17:56,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:17:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:56,929 INFO L87 Difference]: Start difference. First operand 33237 states and 60338 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 05:18:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:00,616 INFO L93 Difference]: Finished difference Result 130171 states and 236689 transitions. [2021-11-03 05:18:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:18:00,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 75 [2021-11-03 05:18:00,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:00,774 INFO L225 Difference]: With dead ends: 130171 [2021-11-03 05:18:00,774 INFO L226 Difference]: Without dead ends: 111504 [2021-11-03 05:18:00,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:18:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111504 states. [2021-11-03 05:18:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111504 to 50533. [2021-11-03 05:18:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50533 states, 50528 states have (on average 1.8064637428752375) internal successors, (91277), 50532 states have internal predecessors, (91277), 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 05:18:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50533 states to 50533 states and 91277 transitions. [2021-11-03 05:18:03,334 INFO L78 Accepts]: Start accepts. Automaton has 50533 states and 91277 transitions. Word has length 75 [2021-11-03 05:18:03,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:03,334 INFO L470 AbstractCegarLoop]: Abstraction has 50533 states and 91277 transitions. [2021-11-03 05:18:03,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 05:18:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 50533 states and 91277 transitions. [2021-11-03 05:18:03,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 05:18:03,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:03,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:03,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:18:03,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:18:03,540 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:18:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:03,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2054997388, now seen corresponding path program 1 times [2021-11-03 05:18:03,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:18:03,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764491289] [2021-11-03 05:18:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:03,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:18:03,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:18:03,543 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:18:03,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:18:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:04,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:18:04,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:04,332 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 05:18:04,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:04,585 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 05:18:04,585 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:18:04,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764491289] [2021-11-03 05:18:04,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764491289] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:04,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:04,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:18:04,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361781987] [2021-11-03 05:18:04,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:18:04,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:18:04,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:18:04,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:18:04,587 INFO L87 Difference]: Start difference. First operand 50533 states and 91277 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 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 05:18:13,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:13,896 INFO L93 Difference]: Finished difference Result 229156 states and 415460 transitions. [2021-11-03 05:18:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:18:13,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 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 77 [2021-11-03 05:18:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:14,192 INFO L225 Difference]: With dead ends: 229156 [2021-11-03 05:18:14,192 INFO L226 Difference]: Without dead ends: 193193 [2021-11-03 05:18:14,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:18:14,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193193 states. [2021-11-03 05:18:18,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193193 to 75530. [2021-11-03 05:18:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75530 states, 75525 states have (on average 1.811400198609732) internal successors, (136806), 75529 states have internal predecessors, (136806), 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 05:18:18,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75530 states to 75530 states and 136806 transitions. [2021-11-03 05:18:18,199 INFO L78 Accepts]: Start accepts. Automaton has 75530 states and 136806 transitions. Word has length 77 [2021-11-03 05:18:18,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:18,200 INFO L470 AbstractCegarLoop]: Abstraction has 75530 states and 136806 transitions. [2021-11-03 05:18:18,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 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 05:18:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 75530 states and 136806 transitions. [2021-11-03 05:18:18,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 05:18:18,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:18,202 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, 1, 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 05:18:18,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:18:18,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:18:18,403 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 05:18:18,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:18,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2004275665, now seen corresponding path program 1 times [2021-11-03 05:18:18,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:18:18,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366279502] [2021-11-03 05:18:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:18,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:18:18,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:18:18,405 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:18:18,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47776bde-2018-4e36-b635-ff5afce0df3a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:18:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:19,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:18:19,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:19,207 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 05:18:19,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:19,396 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 05:18:19,396 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:18:19,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366279502] [2021-11-03 05:18:19,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366279502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:19,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:19,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:18:19,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908566100] [2021-11-03 05:18:19,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:18:19,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:18:19,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:18:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:18:19,398 INFO L87 Difference]: Start difference. First operand 75530 states and 136806 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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)