./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.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_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/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_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/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_554e38cc-303b-4398-a351-9ada1abddab0/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 fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:57:27,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:57:27,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:57:27,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:57:27,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:57:27,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:57:27,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:57:27,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:57:27,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:57:27,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:57:27,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:57:27,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:57:27,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:57:27,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:57:27,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:57:27,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:57:27,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:57:27,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:57:27,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:57:27,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:57:27,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:57:27,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:57:27,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:57:27,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:57:27,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:57:27,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:57:27,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:57:27,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:57:27,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:57:27,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:57:27,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:57:27,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:57:27,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:57:27,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:57:27,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:57:27,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:57:27,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:57:27,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:57:27,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:57:27,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:57:27,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:57:27,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:57:27,331 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:57:27,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:57:27,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:57:27,332 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:57:27,332 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:57:27,333 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:57:27,333 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:57:27,333 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:57:27,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:57:27,333 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:57:27,334 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:57:27,334 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:57:27,334 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:57:27,334 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:57:27,335 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:57:27,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:57:27,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:57:27,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:57:27,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:57:27,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:57:27,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:57:27,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:57:27,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:57:27,337 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:57:27,337 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:57:27,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:57:27,338 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:57:27,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:57:27,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:57:27,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:57:27,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:57:27,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:57:27,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:57:27,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:57:27,340 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:57:27,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:57:27,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:57:27,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:57:27,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:57:27,341 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_554e38cc-303b-4398-a351-9ada1abddab0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 [2021-11-03 04:57:27,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:57:27,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:57:27,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:57:27,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:57:27,661 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:57:27,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-03 04:57:27,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/data/8137f2f9e/b4a3e12a49654bf8957f1b528751098b/FLAG2c80b8605 [2021-11-03 04:57:28,363 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:57:28,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-03 04:57:28,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/data/8137f2f9e/b4a3e12a49654bf8957f1b528751098b/FLAG2c80b8605 [2021-11-03 04:57:28,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/data/8137f2f9e/b4a3e12a49654bf8957f1b528751098b [2021-11-03 04:57:28,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:57:28,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:57:28,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:57:28,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:57:28,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:57:28,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:57:28" (1/1) ... [2021-11-03 04:57:28,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732a1873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:28, skipping insertion in model container [2021-11-03 04:57:28,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:57:28" (1/1) ... [2021-11-03 04:57:28,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:57:28,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:57:29,148 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_554e38cc-303b-4398-a351-9ada1abddab0/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-03 04:57:29,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:57:29,173 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 04:57:29,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1518cd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:29, skipping insertion in model container [2021-11-03 04:57:29,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:57:29,175 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:57:29,177 INFO L168 Benchmark]: Toolchain (without parser) took 614.14 ms. Allocated memory is still 115.3 MB. Free memory was 74.6 MB in the beginning and 81.1 MB in the end (delta: -6.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:57:29,178 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory was 94.3 MB in the beginning and 94.2 MB in the end (delta: 67.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:57:29,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.67 ms. Allocated memory is still 115.3 MB. Free memory was 74.4 MB in the beginning and 81.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:57:29,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory was 94.3 MB in the beginning and 94.2 MB in the end (delta: 67.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 611.67 ms. Allocated memory is still 115.3 MB. Free memory was 74.4 MB in the beginning and 81.1 MB in the end (delta: -6.7 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: 1050]: 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_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/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_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/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_554e38cc-303b-4398-a351-9ada1abddab0/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 fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:57:31,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:57:31,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:57:31,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:57:31,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:57:31,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:57:31,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:57:31,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:57:31,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:57:31,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:57:31,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:57:31,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:57:31,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:57:31,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:57:31,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:57:31,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:57:31,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:57:31,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:57:31,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:57:31,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:57:31,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:57:31,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:57:31,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:57:31,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:57:31,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:57:31,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:57:31,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:57:31,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:57:31,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:57:31,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:57:31,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:57:31,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:57:31,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:57:31,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:57:31,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:57:31,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:57:31,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:57:31,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:57:31,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:57:31,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:57:31,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:57:31,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:57:31,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:57:31,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:57:31,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:57:31,654 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:57:31,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:57:31,654 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:57:31,654 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:57:31,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:57:31,655 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:57:31,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:57:31,656 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:57:31,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:57:31,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:57:31,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:57:31,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:57:31,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:57:31,657 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:57:31,658 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:57:31,658 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:57:31,658 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:57:31,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:57:31,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:57:31,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:57:31,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:57:31,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:57:31,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:57:31,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:57:31,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:57:31,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:57:31,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:57:31,661 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:57:31,661 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:31,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:57:31,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:57:31,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:57:31,662 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_554e38cc-303b-4398-a351-9ada1abddab0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 [2021-11-03 04:57:32,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:57:32,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:57:32,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:57:32,093 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:57:32,094 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:57:32,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-03 04:57:32,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/data/e1fac099d/ff47ae6fae944b9d9329685b8f55e1a2/FLAGd3966b62b [2021-11-03 04:57:32,893 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:57:32,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-03 04:57:32,920 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/data/e1fac099d/ff47ae6fae944b9d9329685b8f55e1a2/FLAGd3966b62b [2021-11-03 04:57:33,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/data/e1fac099d/ff47ae6fae944b9d9329685b8f55e1a2 [2021-11-03 04:57:33,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:57:33,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:57:33,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:57:33,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:57:33,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:57:33,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:57:33" (1/1) ... [2021-11-03 04:57:33,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b9eff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:33, skipping insertion in model container [2021-11-03 04:57:33,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:57:33" (1/1) ... [2021-11-03 04:57:33,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:57:33,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:57:33,674 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_554e38cc-303b-4398-a351-9ada1abddab0/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-03 04:57:33,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:57:33,715 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:57:33,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:57:33,863 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_554e38cc-303b-4398-a351-9ada1abddab0/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-03 04:57:33,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:57:33,890 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:57:34,002 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_554e38cc-303b-4398-a351-9ada1abddab0/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-03 04:57:34,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:57:34,032 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:57:34,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34 WrapperNode [2021-11-03 04:57:34,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:57:34,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:57:34,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:57:34,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:57:34,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (1/1) ... [2021-11-03 04:57:34,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (1/1) ... [2021-11-03 04:57:34,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:57:34,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:57:34,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:57:34,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:57:34,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (1/1) ... [2021-11-03 04:57:34,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (1/1) ... [2021-11-03 04:57:34,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (1/1) ... [2021-11-03 04:57:34,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (1/1) ... [2021-11-03 04:57:34,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (1/1) ... [2021-11-03 04:57:34,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (1/1) ... [2021-11-03 04:57:34,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (1/1) ... [2021-11-03 04:57:34,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:57:34,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:57:34,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:57:34,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:57:34,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (1/1) ... [2021-11-03 04:57:34,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:57:34,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:57:34,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:57:34,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:57:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:57:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:57:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:57:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:57:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:57:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:57:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:57:34,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:57:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:57:34,565 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 04:57:44,236 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-03 04:57:44,236 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-03 04:57:44,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:57:44,245 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:57:44,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:57:44 BoogieIcfgContainer [2021-11-03 04:57:44,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:57:44,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:57:44,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:57:44,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:57:44,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:57:33" (1/3) ... [2021-11-03 04:57:44,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5165ef7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:57:44, skipping insertion in model container [2021-11-03 04:57:44,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:34" (2/3) ... [2021-11-03 04:57:44,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5165ef7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:57:44, skipping insertion in model container [2021-11-03 04:57:44,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:57:44" (3/3) ... [2021-11-03 04:57:44,255 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.08.i.cil-1.c [2021-11-03 04:57:44,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:57:44,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:57:44,309 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:57:44,315 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 04:57:44,315 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:57:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 150 states have internal predecessors, (256), 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 04:57:44,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:57:44,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:44,364 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] [2021-11-03 04:57:44,364 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:57:44,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:44,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1630857964, now seen corresponding path program 1 times [2021-11-03 04:57:44,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:44,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015844478] [2021-11-03 04:57:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:44,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:44,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:44,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:57:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:44,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:57:44,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:45,036 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 04:57:45,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:45,325 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 04:57:45,325 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:45,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015844478] [2021-11-03 04:57:45,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015844478] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:45,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:45,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:57:45,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886791904] [2021-11-03 04:57:45,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:57:45,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:57:45,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:57:45,349 INFO L87 Difference]: Start difference. First operand has 151 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 150 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 04:57:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:45,633 INFO L93 Difference]: Finished difference Result 566 states and 968 transitions. [2021-11-03 04:57:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:57:45,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 45 [2021-11-03 04:57:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:45,662 INFO L225 Difference]: With dead ends: 566 [2021-11-03 04:57:45,662 INFO L226 Difference]: Without dead ends: 386 [2021-11-03 04:57:45,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 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 04:57:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-03 04:57:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-03 04:57:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.5298701298701298) internal successors, (589), 385 states have internal predecessors, (589), 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 04:57:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 589 transitions. [2021-11-03 04:57:45,754 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 589 transitions. Word has length 45 [2021-11-03 04:57:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:45,755 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 589 transitions. [2021-11-03 04:57:45,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 04:57:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 589 transitions. [2021-11-03 04:57:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 04:57:45,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:45,773 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:45,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:57:45,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:45,977 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:57:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1648174202, now seen corresponding path program 1 times [2021-11-03 04:57:45,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:45,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732632407] [2021-11-03 04:57:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:45,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:45,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:45,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:45,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:57:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:46,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:57:46,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:46,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:47,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:47,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732632407] [2021-11-03 04:57:47,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732632407] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:47,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:47,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:57:47,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824212790] [2021-11-03 04:57:47,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:57:47,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:57:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:57:47,148 INFO L87 Difference]: Start difference. First operand 386 states and 589 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 04:57:47,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:47,734 INFO L93 Difference]: Finished difference Result 883 states and 1363 transitions. [2021-11-03 04:57:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:57:47,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 107 [2021-11-03 04:57:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:47,740 INFO L225 Difference]: With dead ends: 883 [2021-11-03 04:57:47,740 INFO L226 Difference]: Without dead ends: 632 [2021-11-03 04:57:47,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 210 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 04:57:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-03 04:57:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2021-11-03 04:57:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 1.5229793977812995) internal successors, (961), 631 states have internal predecessors, (961), 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 04:57:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 961 transitions. [2021-11-03 04:57:47,780 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 961 transitions. Word has length 107 [2021-11-03 04:57:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:47,781 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 961 transitions. [2021-11-03 04:57:47,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 04:57:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 961 transitions. [2021-11-03 04:57:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-03 04:57:47,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:47,786 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:47,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:47,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:47,994 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:57:47,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:47,995 INFO L85 PathProgramCache]: Analyzing trace with hash -980856047, now seen corresponding path program 1 times [2021-11-03 04:57:47,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:47,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105212207] [2021-11-03 04:57:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:47,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:47,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:48,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:48,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:57:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:48,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:57:48,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 04:57:49,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 04:57:49,581 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:49,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105212207] [2021-11-03 04:57:49,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105212207] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:49,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:49,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:57:49,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855040136] [2021-11-03 04:57:49,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:57:49,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:49,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:57:49,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:57:49,584 INFO L87 Difference]: Start difference. First operand 632 states and 961 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 04:57:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:50,243 INFO L93 Difference]: Finished difference Result 1251 states and 1912 transitions. [2021-11-03 04:57:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:57:50,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 172 [2021-11-03 04:57:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:50,249 INFO L225 Difference]: With dead ends: 1251 [2021-11-03 04:57:50,249 INFO L226 Difference]: Without dead ends: 754 [2021-11-03 04:57:50,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 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 04:57:50,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-03 04:57:50,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2021-11-03 04:57:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.5179282868525896) internal successors, (1143), 753 states have internal predecessors, (1143), 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 04:57:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1143 transitions. [2021-11-03 04:57:50,286 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1143 transitions. Word has length 172 [2021-11-03 04:57:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:50,287 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 1143 transitions. [2021-11-03 04:57:50,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 04:57:50,287 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1143 transitions. [2021-11-03 04:57:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-03 04:57:50,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:50,292 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-03 04:57:50,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:50,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:50,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:57:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash -302907374, now seen corresponding path program 1 times [2021-11-03 04:57:50,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:50,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753618382] [2021-11-03 04:57:50,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:50,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:50,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:50,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:50,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:57:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:51,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:57:51,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-03 04:57:51,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-03 04:57:52,333 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:52,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753618382] [2021-11-03 04:57:52,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753618382] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:52,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:52,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:57:52,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206044505] [2021-11-03 04:57:52,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:57:52,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:52,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:57:52,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:57:52,336 INFO L87 Difference]: Start difference. First operand 754 states and 1143 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 04:57:53,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:53,156 INFO L93 Difference]: Finished difference Result 1618 states and 2468 transitions. [2021-11-03 04:57:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:57:53,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 213 [2021-11-03 04:57:53,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:53,165 INFO L225 Difference]: With dead ends: 1618 [2021-11-03 04:57:53,165 INFO L226 Difference]: Without dead ends: 999 [2021-11-03 04:57:53,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 422 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 04:57:53,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-11-03 04:57:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 999. [2021-11-03 04:57:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 1.5160320641282565) internal successors, (1513), 998 states have internal predecessors, (1513), 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 04:57:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1513 transitions. [2021-11-03 04:57:53,220 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1513 transitions. Word has length 213 [2021-11-03 04:57:53,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:53,220 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 1513 transitions. [2021-11-03 04:57:53,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 04:57:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1513 transitions. [2021-11-03 04:57:53,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-03 04:57:53,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:53,228 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:53,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:53,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:53,453 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:57:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:53,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1717022423, now seen corresponding path program 1 times [2021-11-03 04:57:53,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:53,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264184552] [2021-11-03 04:57:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:53,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:53,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:53,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:53,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:57:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:54,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:57:54,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-03 04:57:55,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-03 04:57:55,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:55,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264184552] [2021-11-03 04:57:55,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264184552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:55,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:55,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:57:55,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879846352] [2021-11-03 04:57:55,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:57:55,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:57:55,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:57:55,864 INFO L87 Difference]: Start difference. First operand 999 states and 1513 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 04:57:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:56,588 INFO L93 Difference]: Finished difference Result 1984 states and 3014 transitions. [2021-11-03 04:57:56,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:57:56,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 296 [2021-11-03 04:57:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:56,596 INFO L225 Difference]: With dead ends: 1984 [2021-11-03 04:57:56,597 INFO L226 Difference]: Without dead ends: 1120 [2021-11-03 04:57:56,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 589 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 04:57:56,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-11-03 04:57:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1120. [2021-11-03 04:57:56,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 1.51295799821269) internal successors, (1693), 1119 states have internal predecessors, (1693), 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 04:57:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1693 transitions. [2021-11-03 04:57:56,644 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1693 transitions. Word has length 296 [2021-11-03 04:57:56,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:56,645 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 1693 transitions. [2021-11-03 04:57:56,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 04:57:56,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1693 transitions. [2021-11-03 04:57:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-03 04:57:56,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:56,653 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:56,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:56,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:56,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:57:56,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:56,870 INFO L85 PathProgramCache]: Analyzing trace with hash 618226153, now seen corresponding path program 1 times [2021-11-03 04:57:56,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:56,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135269681] [2021-11-03 04:57:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:56,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:56,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:56,873 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:56,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:57:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:57,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:57:57,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-03 04:57:58,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-03 04:57:59,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:59,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135269681] [2021-11-03 04:57:59,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135269681] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:59,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:59,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:57:59,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906789647] [2021-11-03 04:57:59,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:57:59,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:57:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:57:59,355 INFO L87 Difference]: Start difference. First operand 1120 states and 1693 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 04:58:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:00,195 INFO L93 Difference]: Finished difference Result 2350 states and 3567 transitions. [2021-11-03 04:58:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:58:00,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 335 [2021-11-03 04:58:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:00,205 INFO L225 Difference]: With dead ends: 2350 [2021-11-03 04:58:00,205 INFO L226 Difference]: Without dead ends: 1365 [2021-11-03 04:58:00,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 666 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 04:58:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-11-03 04:58:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1365. [2021-11-03 04:58:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.5109970674486803) internal successors, (2061), 1364 states have internal predecessors, (2061), 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 04:58:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2061 transitions. [2021-11-03 04:58:00,259 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2061 transitions. Word has length 335 [2021-11-03 04:58:00,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:58:00,260 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 2061 transitions. [2021-11-03 04:58:00,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 04:58:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2061 transitions. [2021-11-03 04:58:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-11-03 04:58:00,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:00,271 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:58:00,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:58:00,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:58:00,493 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:58:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1430965337, now seen corresponding path program 1 times [2021-11-03 04:58:00,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:00,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439153931] [2021-11-03 04:58:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:00,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:00,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:00,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:00,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:58:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:02,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:58:02,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:02,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:58:02,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:58:02,974 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:02,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 04:58:02,994 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:02,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-03 04:58:03,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-03 04:58:03,482 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-03 04:58:03,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 1289 treesize of output 1241 [2021-11-03 04:58:03,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:03,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 04:58:03,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-03 04:58:03,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 101 [2021-11-03 04:58:03,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-03 04:58:03,841 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-03 04:58:03,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-03 04:58:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:03,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-03 04:58:03,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-03 04:58:03,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-03 04:58:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-11-03 04:58:05,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:06,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:06,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-03 04:58:06,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:06,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-03 04:58:06,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:06,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-03 04:58:06,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:06,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-03 04:58:06,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:06,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-03 04:58:06,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:06,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-03 04:58:06,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:06,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-03 04:58:06,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:58:06,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-03 04:58:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-11-03 04:58:07,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:07,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439153931] [2021-11-03 04:58:07,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439153931] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:58:07,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:58:07,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:58:07,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902039641] [2021-11-03 04:58:07,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:58:07,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:07,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:58:07,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:58:07,210 INFO L87 Difference]: Start difference. First operand 1365 states and 2061 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 04:58:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:36,329 INFO L93 Difference]: Finished difference Result 2727 states and 4118 transitions. [2021-11-03 04:58:36,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:58:36,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 421 [2021-11-03 04:58:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:36,340 INFO L225 Difference]: With dead ends: 2727 [2021-11-03 04:58:36,340 INFO L226 Difference]: Without dead ends: 1365 [2021-11-03 04:58:36,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 833 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:58:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-11-03 04:58:36,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1365. [2021-11-03 04:58:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.5102639296187683) internal successors, (2060), 1364 states have internal predecessors, (2060), 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 04:58:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2060 transitions. [2021-11-03 04:58:36,417 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2060 transitions. Word has length 421 [2021-11-03 04:58:36,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:58:36,417 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 2060 transitions. [2021-11-03 04:58:36,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 04:58:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2060 transitions. [2021-11-03 04:58:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-11-03 04:58:36,423 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:36,424 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:58:36,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 04:58:36,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:58:36,649 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:58:36,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1367846103, now seen corresponding path program 1 times [2021-11-03 04:58:36,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:36,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873824246] [2021-11-03 04:58:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:36,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:36,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:36,653 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:36,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:58:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:39,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:58:39,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:39,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:39,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:39,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:58:39,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:58:39,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:58:39,625 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-03 04:58:39,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-03 04:58:39,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:58:39,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:58:39,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:58:40,029 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-03 04:58:40,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-03 04:58:43,033 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 04:58:43,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-03 04:58:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2021-11-03 04:58:43,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2021-11-03 04:58:45,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:45,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873824246] [2021-11-03 04:58:45,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873824246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:58:45,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:58:45,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-03 04:58:45,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551921033] [2021-11-03 04:58:45,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:58:45,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:45,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:58:45,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:58:45,087 INFO L87 Difference]: Start difference. First operand 1365 states and 2060 transitions. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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 04:59:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:32,167 INFO L93 Difference]: Finished difference Result 5999 states and 9087 transitions. [2021-11-03 04:59:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:59:32,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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 421 [2021-11-03 04:59:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:32,197 INFO L225 Difference]: With dead ends: 5999 [2021-11-03 04:59:32,197 INFO L226 Difference]: Without dead ends: 4644 [2021-11-03 04:59:32,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 834 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:59:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-11-03 04:59:32,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 1834. [2021-11-03 04:59:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.5897435897435896) internal successors, (2914), 1833 states have internal predecessors, (2914), 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 04:59:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2914 transitions. [2021-11-03 04:59:32,342 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2914 transitions. Word has length 421 [2021-11-03 04:59:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:32,342 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2914 transitions. [2021-11-03 04:59:32,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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 04:59:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2914 transitions. [2021-11-03 04:59:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-11-03 04:59:32,349 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:32,350 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:59:32,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:32,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:32,573 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:59:32,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:32,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1803946925, now seen corresponding path program 1 times [2021-11-03 04:59:32,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:32,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880833429] [2021-11-03 04:59:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:32,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:32,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:32,576 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:32,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554e38cc-303b-4398-a351-9ada1abddab0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:59:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:40,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 04:59:40,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:42,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:59:42,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:59:42,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2021-11-03 04:59:42,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 131 [2021-11-03 04:59:42,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 107 [2021-11-03 04:59:42,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:59:42,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:42,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:59:43,930 INFO L354 Elim1Store]: treesize reduction 1579, result has 17.5 percent of original size [2021-11-03 04:59:43,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 31 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 107 treesize of output 371 [2021-11-03 05:00:07,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:00:07,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:00:07,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:00:07,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:00:07,905 INFO L354 Elim1Store]: treesize reduction 1322, result has 7.7 percent of original size [2021-11-03 05:00:07,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 70 case distinctions, treesize of input 391 treesize of output 509 [2021-11-03 05:01:08,253 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:01:08,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 105 treesize of output 41 [2021-11-03 05:01:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 947 proven. 1 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2021-11-03 05:01:10,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:01:14,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 589 treesize of output 493 [2021-11-03 05:01:14,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 493 treesize of output 301