./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.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_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/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_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/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_5981e984-b489-44c2-b5db-d0b3d99788fa/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 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:58:18,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:58:18,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:58:18,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:58:18,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:58:18,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:58:18,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:58:18,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:58:18,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:58:18,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:58:18,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:58:18,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:58:18,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:58:18,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:58:18,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:58:18,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:58:18,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:58:18,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:58:18,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:58:18,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:58:18,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:58:18,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:58:18,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:58:18,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:58:18,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:58:18,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:58:18,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:58:18,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:58:18,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:58:18,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:58:18,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:58:18,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:58:18,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:58:18,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:58:18,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:58:18,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:58:18,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:58:18,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:58:18,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:58:18,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:58:18,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:58:18,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:58:18,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:58:18,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:58:18,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:58:18,265 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:58:18,265 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:58:18,265 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:58:18,266 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:58:18,266 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:58:18,274 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:58:18,274 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:58:18,276 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:58:18,276 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:58:18,277 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:58:18,277 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:58:18,277 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:58:18,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:58:18,278 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:58:18,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:58:18,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:58:18,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:58:18,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:58:18,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:58:18,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:58:18,280 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:58:18,281 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:58:18,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:58:18,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:58:18,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:58:18,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:58:18,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:58:18,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:58:18,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:58:18,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:58:18,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:58:18,285 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:58:18,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:58:18,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:58:18,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:58:18,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:58:18,287 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_5981e984-b489-44c2-b5db-d0b3d99788fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2021-11-03 03:58:18,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:58:18,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:58:18,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:58:18,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:58:18,682 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:58:18,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-03 03:58:18,786 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/data/2ab3d6a4a/ae7915c8194f4e21b8e4e33b33873567/FLAG87d65f774 [2021-11-03 03:58:19,414 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:58:19,415 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-03 03:58:19,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/data/2ab3d6a4a/ae7915c8194f4e21b8e4e33b33873567/FLAG87d65f774 [2021-11-03 03:58:19,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/data/2ab3d6a4a/ae7915c8194f4e21b8e4e33b33873567 [2021-11-03 03:58:19,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:58:19,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:58:19,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:58:19,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:58:19,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:58:19,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:58:19" (1/1) ... [2021-11-03 03:58:19,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774251b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:19, skipping insertion in model container [2021-11-03 03:58:19,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:58:19" (1/1) ... [2021-11-03 03:58:19,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:58:19,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:58:20,528 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_5981e984-b489-44c2-b5db-d0b3d99788fa/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-03 03:58:20,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:58:20,625 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 03:58:20,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45b78486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:20, skipping insertion in model container [2021-11-03 03:58:20,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:58:20,627 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:58:20,630 INFO L168 Benchmark]: Toolchain (without parser) took 986.33 ms. Allocated memory is still 113.2 MB. Free memory was 74.5 MB in the beginning and 71.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:58:20,632 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 52.7 MB in the beginning and 52.6 MB in the end (delta: 21.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:58:20,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 981.11 ms. Allocated memory is still 113.2 MB. Free memory was 74.3 MB in the beginning and 71.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:58:20,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 52.7 MB in the beginning and 52.6 MB in the end (delta: 21.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 981.11 ms. Allocated memory is still 113.2 MB. Free memory was 74.3 MB in the beginning and 71.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1155]: 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_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/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_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/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_5981e984-b489-44c2-b5db-d0b3d99788fa/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 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:58:23,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:58:23,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:58:23,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:58:23,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:58:23,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:58:23,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:58:23,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:58:23,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:58:23,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:58:23,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:58:23,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:58:23,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:58:23,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:58:23,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:58:23,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:58:23,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:58:23,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:58:23,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:58:23,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:58:23,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:58:23,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:58:23,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:58:23,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:58:23,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:58:23,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:58:23,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:58:23,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:58:23,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:58:23,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:58:23,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:58:23,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:58:23,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:58:23,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:58:23,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:58:23,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:58:23,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:58:23,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:58:23,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:58:23,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:58:23,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:58:23,412 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:58:23,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:58:23,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:58:23,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:58:23,456 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:58:23,456 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:58:23,457 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:58:23,457 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:58:23,457 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:58:23,457 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:58:23,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:58:23,460 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:58:23,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:58:23,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:58:23,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:58:23,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:58:23,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:58:23,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:58:23,462 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:58:23,462 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:58:23,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:58:23,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:58:23,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:58:23,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:58:23,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:58:23,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:58:23,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:58:23,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:58:23,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:58:23,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:58:23,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:58:23,465 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:58:23,465 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:58:23,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:58:23,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:58:23,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:58:23,467 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_5981e984-b489-44c2-b5db-d0b3d99788fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2021-11-03 03:58:23,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:58:23,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:58:23,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:58:23,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:58:23,872 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:58:23,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-03 03:58:23,938 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/data/c8b1d9cce/7eda87b7449e4f50a522075503ddbe9f/FLAG138e98f85 [2021-11-03 03:58:24,579 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:58:24,580 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-03 03:58:24,605 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/data/c8b1d9cce/7eda87b7449e4f50a522075503ddbe9f/FLAG138e98f85 [2021-11-03 03:58:24,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/data/c8b1d9cce/7eda87b7449e4f50a522075503ddbe9f [2021-11-03 03:58:24,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:58:24,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:58:24,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:58:24,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:58:24,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:58:24,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:58:24" (1/1) ... [2021-11-03 03:58:24,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788cb3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:24, skipping insertion in model container [2021-11-03 03:58:24,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:58:24" (1/1) ... [2021-11-03 03:58:24,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:58:24,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:58:25,601 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_5981e984-b489-44c2-b5db-d0b3d99788fa/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-03 03:58:25,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:58:25,720 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:58:25,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:58:25,873 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_5981e984-b489-44c2-b5db-d0b3d99788fa/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-03 03:58:25,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:58:25,944 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:58:26,044 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_5981e984-b489-44c2-b5db-d0b3d99788fa/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-03 03:58:26,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:58:26,153 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:58:26,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26 WrapperNode [2021-11-03 03:58:26,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:58:26,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:58:26,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:58:26,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:58:26,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (1/1) ... [2021-11-03 03:58:26,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (1/1) ... [2021-11-03 03:58:32,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:58:32,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:58:32,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:58:32,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:58:32,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (1/1) ... [2021-11-03 03:58:32,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (1/1) ... [2021-11-03 03:58:33,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (1/1) ... [2021-11-03 03:58:33,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (1/1) ... [2021-11-03 03:58:35,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (1/1) ... [2021-11-03 03:58:36,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (1/1) ... [2021-11-03 03:58:36,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (1/1) ... [2021-11-03 03:58:37,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:58:37,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:58:37,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:58:37,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:58:37,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (1/1) ... [2021-11-03 03:58:37,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:58:37,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:58:37,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:58:37,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:58:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-03 03:58:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:58:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:58:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:58:37,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:59:37,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:59:37,991 INFO L299 CfgBuilder]: Removed 39195 assume(true) statements. [2021-11-03 03:59:38,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:38 BoogieIcfgContainer [2021-11-03 03:59:38,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:59:38,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:59:38,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:59:38,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:59:38,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:58:24" (1/3) ... [2021-11-03 03:59:38,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f34ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:38, skipping insertion in model container [2021-11-03 03:59:38,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:26" (2/3) ... [2021-11-03 03:59:38,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f34ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:38, skipping insertion in model container [2021-11-03 03:59:38,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:38" (3/3) ... [2021-11-03 03:59:38,036 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2021-11-03 03:59:38,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:59:38,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 256 error locations. [2021-11-03 03:59:38,194 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:59:38,200 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 03:59:38,200 INFO L340 AbstractCegarLoop]: Starting to check reachability of 256 error locations. [2021-11-03 03:59:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 37780 states, 37523 states have (on average 1.5988860165764998) internal successors, (59995), 37779 states have internal predecessors, (59995), 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 03:59:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 03:59:39,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:39,072 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 03:59:39,073 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-03 03:59:39,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:39,091 INFO L85 PathProgramCache]: Analyzing trace with hash -862041203, now seen corresponding path program 1 times [2021-11-03 03:59:39,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:39,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731313573] [2021-11-03 03:59:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:39,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:39,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:39,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:39,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:59:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:39,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:59:39,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:39,800 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 03:59:39,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:39,951 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 03:59:39,952 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:39,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731313573] [2021-11-03 03:59:39,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731313573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:39,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:39,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:59:39,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109169750] [2021-11-03 03:59:39,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:59:39,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:59:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:59:40,020 INFO L87 Difference]: Start difference. First operand has 37780 states, 37523 states have (on average 1.5988860165764998) internal successors, (59995), 37779 states have internal predecessors, (59995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 03:59:41,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:41,077 INFO L93 Difference]: Finished difference Result 75225 states and 119378 transitions. [2021-11-03 03:59:41,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:59:41,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 03:59:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:41,301 INFO L225 Difference]: With dead ends: 75225 [2021-11-03 03:59:41,301 INFO L226 Difference]: Without dead ends: 27168 [2021-11-03 03:59:41,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:59:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27168 states. [2021-11-03 03:59:42,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27168 to 27168. [2021-11-03 03:59:42,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27168 states, 26912 states have (on average 1.588139120095125) internal successors, (42740), 27167 states have internal predecessors, (42740), 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 03:59:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27168 states to 27168 states and 42740 transitions. [2021-11-03 03:59:42,794 INFO L78 Accepts]: Start accepts. Automaton has 27168 states and 42740 transitions. Word has length 56 [2021-11-03 03:59:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:42,796 INFO L470 AbstractCegarLoop]: Abstraction has 27168 states and 42740 transitions. [2021-11-03 03:59:42,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 03:59:42,798 INFO L276 IsEmpty]: Start isEmpty. Operand 27168 states and 42740 transitions. [2021-11-03 03:59:42,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 03:59:42,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:42,805 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] [2021-11-03 03:59:42,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:43,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:43,020 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-03 03:59:43,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:43,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1864859122, now seen corresponding path program 1 times [2021-11-03 03:59:43,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:43,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133013168] [2021-11-03 03:59:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:43,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:43,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:43,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:43,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:59:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:43,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:59:43,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:43,711 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 03:59:43,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:43,902 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 03:59:43,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:43,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133013168] [2021-11-03 03:59:43,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133013168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:43,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:43,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:59:43,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243266798] [2021-11-03 03:59:43,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:59:43,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:43,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:59:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:59:43,910 INFO L87 Difference]: Start difference. First operand 27168 states and 42740 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 03:59:45,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:45,459 INFO L93 Difference]: Finished difference Result 54311 states and 85442 transitions. [2021-11-03 03:59:45,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:59:45,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 57 [2021-11-03 03:59:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:45,538 INFO L225 Difference]: With dead ends: 54311 [2021-11-03 03:59:45,538 INFO L226 Difference]: Without dead ends: 27168 [2021-11-03 03:59:45,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:59:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27168 states. [2021-11-03 03:59:46,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27168 to 27168. [2021-11-03 03:59:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27168 states, 26912 states have (on average 1.5878790130796672) internal successors, (42733), 27167 states have internal predecessors, (42733), 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 03:59:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27168 states to 27168 states and 42733 transitions. [2021-11-03 03:59:46,517 INFO L78 Accepts]: Start accepts. Automaton has 27168 states and 42733 transitions. Word has length 57 [2021-11-03 03:59:46,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:46,518 INFO L470 AbstractCegarLoop]: Abstraction has 27168 states and 42733 transitions. [2021-11-03 03:59:46,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 03:59:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 27168 states and 42733 transitions. [2021-11-03 03:59:46,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-03 03:59:46,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:46,529 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] [2021-11-03 03:59:46,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:46,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:46,744 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-03 03:59:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:46,745 INFO L85 PathProgramCache]: Analyzing trace with hash -190157152, now seen corresponding path program 1 times [2021-11-03 03:59:46,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:46,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577619064] [2021-11-03 03:59:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:46,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:46,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:46,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:46,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:59:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:47,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:59:47,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:47,443 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 03:59:47,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:47,623 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 03:59:47,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:47,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577619064] [2021-11-03 03:59:47,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577619064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:47,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:47,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:59:47,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009778363] [2021-11-03 03:59:47,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:59:47,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:59:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:59:47,626 INFO L87 Difference]: Start difference. First operand 27168 states and 42733 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 03:59:52,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:52,626 INFO L93 Difference]: Finished difference Result 108519 states and 170698 transitions. [2021-11-03 03:59:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:59:52,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 62 [2021-11-03 03:59:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:52,934 INFO L225 Difference]: With dead ends: 108519 [2021-11-03 03:59:52,934 INFO L226 Difference]: Without dead ends: 81396 [2021-11-03 03:59:53,012 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 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 03:59:53,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81396 states. [2021-11-03 03:59:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81396 to 27166. [2021-11-03 03:59:54,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27166 states, 26910 states have (on average 1.587699739873653) internal successors, (42725), 27165 states have internal predecessors, (42725), 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 03:59:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27166 states to 27166 states and 42725 transitions. [2021-11-03 03:59:54,715 INFO L78 Accepts]: Start accepts. Automaton has 27166 states and 42725 transitions. Word has length 62 [2021-11-03 03:59:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:54,716 INFO L470 AbstractCegarLoop]: Abstraction has 27166 states and 42725 transitions. [2021-11-03 03:59:54,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 03:59:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 27166 states and 42725 transitions. [2021-11-03 03:59:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 03:59:54,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:54,721 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] [2021-11-03 03:59:54,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:54,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:54,941 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-03 03:59:54,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:54,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1018782346, now seen corresponding path program 1 times [2021-11-03 03:59:54,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:54,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068046136] [2021-11-03 03:59:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:54,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:54,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:54,946 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:54,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:59:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:55,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:59:55,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:55,668 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 03:59:55,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:55,833 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 03:59:55,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:55,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068046136] [2021-11-03 03:59:55,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068046136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:55,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:55,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:59:55,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890439279] [2021-11-03 03:59:55,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:59:55,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:55,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:59:55,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:59:55,836 INFO L87 Difference]: Start difference. First operand 27166 states and 42725 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 03:59:57,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:57,537 INFO L93 Difference]: Finished difference Result 54287 states and 85386 transitions. [2021-11-03 03:59:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:59:57,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-03 03:59:57,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:57,624 INFO L225 Difference]: With dead ends: 54287 [2021-11-03 03:59:57,624 INFO L226 Difference]: Without dead ends: 27178 [2021-11-03 03:59:57,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:57,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27178 states. [2021-11-03 03:59:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27178 to 27166. [2021-11-03 03:59:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27166 states, 26910 states have (on average 1.5874767744332963) internal successors, (42719), 27165 states have internal predecessors, (42719), 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 03:59:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27166 states to 27166 states and 42719 transitions. [2021-11-03 03:59:58,739 INFO L78 Accepts]: Start accepts. Automaton has 27166 states and 42719 transitions. Word has length 63 [2021-11-03 03:59:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:58,740 INFO L470 AbstractCegarLoop]: Abstraction has 27166 states and 42719 transitions. [2021-11-03 03:59:58,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 03:59:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 27166 states and 42719 transitions. [2021-11-03 03:59:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 03:59:58,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:58,744 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] [2021-11-03 03:59:58,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-03 03:59:58,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:58,958 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-03 03:59:58,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:58,959 INFO L85 PathProgramCache]: Analyzing trace with hash 389103163, now seen corresponding path program 1 times [2021-11-03 03:59:58,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:58,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049917080] [2021-11-03 03:59:58,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:58,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:58,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:58,963 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:58,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:59:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:59,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:59:59,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:59,616 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 03:59:59,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:59,792 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 03:59:59,792 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:59,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049917080] [2021-11-03 03:59:59,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049917080] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:59,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:59,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:59:59,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626812321] [2021-11-03 03:59:59,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:59:59,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:59:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:59:59,795 INFO L87 Difference]: Start difference. First operand 27166 states and 42719 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 04:00:01,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:01,772 INFO L93 Difference]: Finished difference Result 81104 states and 127485 transitions. [2021-11-03 04:00:01,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:00:01,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 65 [2021-11-03 04:00:01,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:01,915 INFO L225 Difference]: With dead ends: 81104 [2021-11-03 04:00:01,915 INFO L226 Difference]: Without dead ends: 54271 [2021-11-03 04:00:01,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 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 04:00:02,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54271 states. [2021-11-03 04:00:03,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54271 to 27438. [2021-11-03 04:00:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27438 states, 27182 states have (on average 1.5900595982635568) internal successors, (43221), 27437 states have internal predecessors, (43221), 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 04:00:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27438 states to 27438 states and 43221 transitions. [2021-11-03 04:00:03,597 INFO L78 Accepts]: Start accepts. Automaton has 27438 states and 43221 transitions. Word has length 65 [2021-11-03 04:00:03,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:03,597 INFO L470 AbstractCegarLoop]: Abstraction has 27438 states and 43221 transitions. [2021-11-03 04:00:03,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 04:00:03,598 INFO L276 IsEmpty]: Start isEmpty. Operand 27438 states and 43221 transitions. [2021-11-03 04:00:03,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:00:03,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:03,602 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 04:00:03,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:03,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:03,818 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-03 04:00:03,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash 53067662, now seen corresponding path program 1 times [2021-11-03 04:00:03,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:03,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420702961] [2021-11-03 04:00:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:03,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:03,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:03,825 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:03,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:00:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:04,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:00:04,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:04,507 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 04:00:04,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:04,693 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 04:00:04,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:04,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420702961] [2021-11-03 04:00:04,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420702961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:04,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:04,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:00:04,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802044657] [2021-11-03 04:00:04,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:04,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:04,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:04,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:04,695 INFO L87 Difference]: Start difference. First operand 27438 states and 43221 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 04:00:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:06,844 INFO L93 Difference]: Finished difference Result 81808 states and 128788 transitions. [2021-11-03 04:00:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:06,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 04:00:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:06,972 INFO L225 Difference]: With dead ends: 81808 [2021-11-03 04:00:06,972 INFO L226 Difference]: Without dead ends: 54490 [2021-11-03 04:00:07,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 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 04:00:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54490 states. [2021-11-03 04:00:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54490 to 27657. [2021-11-03 04:00:08,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27657 states, 27401 states have (on average 1.5920586839896353) internal successors, (43624), 27656 states have internal predecessors, (43624), 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 04:00:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27657 states to 27657 states and 43624 transitions. [2021-11-03 04:00:08,592 INFO L78 Accepts]: Start accepts. Automaton has 27657 states and 43624 transitions. Word has length 77 [2021-11-03 04:00:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:08,592 INFO L470 AbstractCegarLoop]: Abstraction has 27657 states and 43624 transitions. [2021-11-03 04:00:08,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 04:00:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 27657 states and 43624 transitions. [2021-11-03 04:00:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 04:00:08,597 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:08,597 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] [2021-11-03 04:00:08,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:08,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:08,798 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-03 04:00:08,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:08,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1962793991, now seen corresponding path program 1 times [2021-11-03 04:00:08,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:08,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350942160] [2021-11-03 04:00:08,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:08,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:08,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:08,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:08,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:00:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:09,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:00:09,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:09,500 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 04:00:09,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:09,674 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 04:00:09,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:09,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350942160] [2021-11-03 04:00:09,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350942160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:09,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:09,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:00:09,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003706457] [2021-11-03 04:00:09,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:09,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:09,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:09,677 INFO L87 Difference]: Start difference. First operand 27657 states and 43624 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 04:00:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:12,281 INFO L93 Difference]: Finished difference Result 82495 states and 130058 transitions. [2021-11-03 04:00:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:12,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-03 04:00:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:12,397 INFO L225 Difference]: With dead ends: 82495 [2021-11-03 04:00:12,397 INFO L226 Difference]: Without dead ends: 54967 [2021-11-03 04:00:12,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 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 04:00:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54967 states. [2021-11-03 04:00:13,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54967 to 28134. [2021-11-03 04:00:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28134 states, 27878 states have (on average 1.5963842456417248) internal successors, (44504), 28133 states have internal predecessors, (44504), 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 04:00:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28134 states to 28134 states and 44504 transitions. [2021-11-03 04:00:13,974 INFO L78 Accepts]: Start accepts. Automaton has 28134 states and 44504 transitions. Word has length 78 [2021-11-03 04:00:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:13,974 INFO L470 AbstractCegarLoop]: Abstraction has 28134 states and 44504 transitions. [2021-11-03 04:00:13,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 04:00:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 28134 states and 44504 transitions. [2021-11-03 04:00:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 04:00:13,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:13,981 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] [2021-11-03 04:00:13,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:14,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:14,196 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-03 04:00:14,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:14,196 INFO L85 PathProgramCache]: Analyzing trace with hash -923125990, now seen corresponding path program 1 times [2021-11-03 04:00:14,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:14,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397565309] [2021-11-03 04:00:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:14,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:14,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:14,198 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:14,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:00:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:14,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:00:14,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:14,888 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 04:00:14,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:15,072 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 04:00:15,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:15,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397565309] [2021-11-03 04:00:15,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397565309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:15,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:15,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:00:15,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47798517] [2021-11-03 04:00:15,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:15,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:15,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:15,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:15,075 INFO L87 Difference]: Start difference. First operand 28134 states and 44504 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 04:00:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:17,712 INFO L93 Difference]: Finished difference Result 83903 states and 132661 transitions. [2021-11-03 04:00:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:17,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-03 04:00:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:17,806 INFO L225 Difference]: With dead ends: 83903 [2021-11-03 04:00:17,806 INFO L226 Difference]: Without dead ends: 55907 [2021-11-03 04:00:17,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 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 04:00:17,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55907 states. [2021-11-03 04:00:19,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55907 to 29074. [2021-11-03 04:00:19,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29074 states, 28818 states have (on average 1.6045180095773475) internal successors, (46239), 29073 states have internal predecessors, (46239), 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 04:00:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29074 states to 29074 states and 46239 transitions. [2021-11-03 04:00:19,619 INFO L78 Accepts]: Start accepts. Automaton has 29074 states and 46239 transitions. Word has length 79 [2021-11-03 04:00:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:19,619 INFO L470 AbstractCegarLoop]: Abstraction has 29074 states and 46239 transitions. [2021-11-03 04:00:19,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 04:00:19,619 INFO L276 IsEmpty]: Start isEmpty. Operand 29074 states and 46239 transitions. [2021-11-03 04:00:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 04:00:19,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:19,626 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:19,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:19,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:19,839 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr127ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 253 more)] === [2021-11-03 04:00:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:19,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1768483589, now seen corresponding path program 1 times [2021-11-03 04:00:19,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:19,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498820169] [2021-11-03 04:00:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:19,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:19,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:19,841 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:19,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981e984-b489-44c2-b5db-d0b3d99788fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:00:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:20,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:00:20,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:20,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:20,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:20,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498820169] [2021-11-03 04:00:20,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498820169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:20,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:20,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:00:20,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834940480] [2021-11-03 04:00:20,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:00:20,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:20,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:00:20,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:00:20,655 INFO L87 Difference]: Start difference. First operand 29074 states and 46239 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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)