./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.14.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_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/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_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/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_733e062b-7e32-4adb-b005-7b555d609dd4/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 c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:46:44,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:46:44,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:46:44,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:46:44,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:46:44,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:46:44,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:46:44,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:46:44,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:46:44,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:46:44,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:46:44,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:46:44,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:46:44,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:46:44,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:46:44,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:46:44,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:46:44,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:46:44,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:46:44,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:46:44,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:46:44,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:46:44,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:46:44,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:46:44,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:46:44,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:46:44,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:46:44,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:46:44,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:46:44,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:46:44,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:46:44,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:46:44,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:46:44,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:46:44,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:46:44,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:46:44,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:46:44,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:46:44,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:46:44,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:46:44,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:46:44,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:46:44,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:46:44,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:46:44,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:46:44,401 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:46:44,401 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:46:44,401 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:46:44,402 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:46:44,402 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:46:44,408 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:46:44,408 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:46:44,409 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:46:44,410 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:46:44,410 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:46:44,410 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:46:44,410 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:46:44,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:46:44,411 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:46:44,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:46:44,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:46:44,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:46:44,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:46:44,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:46:44,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:46:44,413 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:46:44,413 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:46:44,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:46:44,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:46:44,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:46:44,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:46:44,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:46:44,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:46:44,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:46:44,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:46:44,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:46:44,416 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:46:44,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:46:44,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:46:44,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:46:44,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:46:44,417 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_733e062b-7e32-4adb-b005-7b555d609dd4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 [2021-11-03 03:46:44,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:46:44,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:46:44,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:46:44,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:46:44,707 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:46:44,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-03 03:46:44,792 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/data/15765d930/ab8ccd978838482ca1010320ec7e3c2a/FLAGc716de77f [2021-11-03 03:46:45,410 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:46:45,413 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-03 03:46:45,458 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/data/15765d930/ab8ccd978838482ca1010320ec7e3c2a/FLAGc716de77f [2021-11-03 03:46:45,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/data/15765d930/ab8ccd978838482ca1010320ec7e3c2a [2021-11-03 03:46:45,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:46:45,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:46:45,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:46:45,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:46:45,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:46:45,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:46:45" (1/1) ... [2021-11-03 03:46:45,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e65b108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:45, skipping insertion in model container [2021-11-03 03:46:45,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:46:45" (1/1) ... [2021-11-03 03:46:45,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:46:45,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:46:46,082 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_733e062b-7e32-4adb-b005-7b555d609dd4/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-03 03:46:46,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:46:46,121 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 03:46:46,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ac79b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:46, skipping insertion in model container [2021-11-03 03:46:46,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:46:46,122 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:46:46,125 INFO L168 Benchmark]: Toolchain (without parser) took 525.08 ms. Allocated memory was 109.1 MB in the beginning and 148.9 MB in the end (delta: 39.8 MB). Free memory was 67.2 MB in the beginning and 121.6 MB in the end (delta: -54.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:46:46,126 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory was 85.7 MB in the beginning and 85.6 MB in the end (delta: 78.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:46:46,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.55 ms. Allocated memory was 109.1 MB in the beginning and 148.9 MB in the end (delta: 39.8 MB). Free memory was 67.0 MB in the beginning and 121.6 MB in the end (delta: -54.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:46:46,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory was 85.7 MB in the beginning and 85.6 MB in the end (delta: 78.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 522.55 ms. Allocated memory was 109.1 MB in the beginning and 148.9 MB in the end (delta: 39.8 MB). Free memory was 67.0 MB in the beginning and 121.6 MB in the end (delta: -54.6 MB). Peak memory consumption was 31.5 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_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/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_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/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_733e062b-7e32-4adb-b005-7b555d609dd4/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 c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:46:48,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:46:48,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:46:48,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:46:48,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:46:48,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:46:48,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:46:48,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:46:48,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:46:48,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:46:48,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:46:48,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:46:48,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:46:48,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:46:48,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:46:48,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:46:48,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:46:48,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:46:48,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:46:48,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:46:48,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:46:48,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:46:48,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:46:48,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:46:48,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:46:48,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:46:48,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:46:48,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:46:48,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:46:48,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:46:48,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:46:48,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:46:48,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:46:48,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:46:48,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:46:48,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:46:48,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:46:48,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:46:48,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:46:48,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:46:48,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:46:48,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:46:48,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:46:48,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:46:48,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:46:48,473 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:46:48,474 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:46:48,474 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:46:48,474 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:46:48,475 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:46:48,475 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:46:48,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:46:48,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:46:48,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:46:48,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:46:48,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:46:48,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:46:48,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:46:48,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:46:48,480 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:46:48,480 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:46:48,480 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:46:48,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:46:48,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:46:48,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:46:48,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:46:48,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:46:48,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:46:48,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:46:48,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:46:48,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:46:48,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:46:48,484 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:46:48,484 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:46:48,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:46:48,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:46:48,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:46:48,485 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_733e062b-7e32-4adb-b005-7b555d609dd4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 [2021-11-03 03:46:48,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:46:48,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:46:48,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:46:48,883 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:46:48,884 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:46:48,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-03 03:46:48,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/data/e5047ecf3/fcbbf833c08247939b04b58c4480ff2b/FLAG488cbc139 [2021-11-03 03:46:49,712 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:46:49,712 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-03 03:46:49,743 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/data/e5047ecf3/fcbbf833c08247939b04b58c4480ff2b/FLAG488cbc139 [2021-11-03 03:46:49,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/data/e5047ecf3/fcbbf833c08247939b04b58c4480ff2b [2021-11-03 03:46:49,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:46:49,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:46:49,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:46:49,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:46:49,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:46:49,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:46:49" (1/1) ... [2021-11-03 03:46:49,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68789c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:49, skipping insertion in model container [2021-11-03 03:46:49,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:46:49" (1/1) ... [2021-11-03 03:46:49,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:46:49,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:46:50,384 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_733e062b-7e32-4adb-b005-7b555d609dd4/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-03 03:46:50,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:46:50,423 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:46:50,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:46:50,623 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_733e062b-7e32-4adb-b005-7b555d609dd4/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-03 03:46:50,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:46:50,644 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:46:50,837 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_733e062b-7e32-4adb-b005-7b555d609dd4/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-03 03:46:50,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:46:50,874 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:46:50,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50 WrapperNode [2021-11-03 03:46:50,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:46:50,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:46:50,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:46:50,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:46:50,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (1/1) ... [2021-11-03 03:46:50,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (1/1) ... [2021-11-03 03:46:50,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:46:50,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:46:50,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:46:50,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:46:50,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (1/1) ... [2021-11-03 03:46:50,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (1/1) ... [2021-11-03 03:46:50,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (1/1) ... [2021-11-03 03:46:50,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (1/1) ... [2021-11-03 03:46:51,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (1/1) ... [2021-11-03 03:46:51,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (1/1) ... [2021-11-03 03:46:51,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (1/1) ... [2021-11-03 03:46:51,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:46:51,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:46:51,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:46:51,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:46:51,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (1/1) ... [2021-11-03 03:46:51,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:46:51,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:46:51,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:46:51,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:46:51,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:46:51,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:46:51,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:46:51,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:46:51,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:46:51,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:46:51,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:46:51,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:46:51,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:46:51,393 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 03:47:00,601 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-03 03:47:00,602 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-03 03:47:00,609 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:47:00,609 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 03:47:00,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:00 BoogieIcfgContainer [2021-11-03 03:47:00,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:47:00,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:47:00,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:47:00,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:47:00,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:46:49" (1/3) ... [2021-11-03 03:47:00,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52083727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:47:00, skipping insertion in model container [2021-11-03 03:47:00,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:50" (2/3) ... [2021-11-03 03:47:00,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52083727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:47:00, skipping insertion in model container [2021-11-03 03:47:00,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:00" (3/3) ... [2021-11-03 03:47:00,620 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.14.i.cil-1.c [2021-11-03 03:47:00,625 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:47:00,626 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:47:00,674 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:47:00,679 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:47:00,680 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:47:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 154 states have (on average 1.7272727272727273) internal successors, (266), 155 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 03:47:00,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:00,708 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 03:47:00,709 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:00,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1590777164, now seen corresponding path program 1 times [2021-11-03 03:47:00,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:00,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453531222] [2021-11-03 03:47:00,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:00,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:00,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:00,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:00,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:47:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:00,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:47:00,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:01,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:47:01,585 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:01,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453531222] [2021-11-03 03:47:01,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453531222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:01,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:01,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:47:01,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999320340] [2021-11-03 03:47:01,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:47:01,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:01,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:47:01,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:47:01,616 INFO L87 Difference]: Start difference. First operand has 156 states, 154 states have (on average 1.7272727272727273) internal successors, (266), 155 states have internal predecessors, (266), 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 03:47:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:01,931 INFO L93 Difference]: Finished difference Result 586 states and 1008 transitions. [2021-11-03 03:47:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:47:01,933 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 03:47:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:01,955 INFO L225 Difference]: With dead ends: 586 [2021-11-03 03:47:01,959 INFO L226 Difference]: Without dead ends: 401 [2021-11-03 03:47:01,964 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 03:47:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-03 03:47:02,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2021-11-03 03:47:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.535) internal successors, (614), 400 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 614 transitions. [2021-11-03 03:47:02,057 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 614 transitions. Word has length 45 [2021-11-03 03:47:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:02,057 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 614 transitions. [2021-11-03 03:47:02,058 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 03:47:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 614 transitions. [2021-11-03 03:47:02,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 03:47:02,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:02,071 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] [2021-11-03 03:47:02,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:02,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:02,285 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:02,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1658829835, now seen corresponding path program 1 times [2021-11-03 03:47:02,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:02,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749222889] [2021-11-03 03:47:02,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:02,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:02,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:02,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:02,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:47:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:02,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:47:02,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:03,044 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 03:47:03,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:03,474 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 03:47:03,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:03,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749222889] [2021-11-03 03:47:03,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749222889] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:03,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:03,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:47:03,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942042615] [2021-11-03 03:47:03,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:47:03,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:03,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:47:03,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:47:03,480 INFO L87 Difference]: Start difference. First operand 401 states and 614 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:03,945 INFO L93 Difference]: Finished difference Result 918 states and 1428 transitions. [2021-11-03 03:47:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:47:03,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 106 [2021-11-03 03:47:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:03,951 INFO L225 Difference]: With dead ends: 918 [2021-11-03 03:47:03,952 INFO L226 Difference]: Without dead ends: 657 [2021-11-03 03:47:03,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 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 03:47:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-03 03:47:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2021-11-03 03:47:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 1.5259146341463414) internal successors, (1001), 656 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1001 transitions. [2021-11-03 03:47:03,979 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1001 transitions. Word has length 106 [2021-11-03 03:47:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:03,980 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1001 transitions. [2021-11-03 03:47:03,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1001 transitions. [2021-11-03 03:47:03,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-03 03:47:03,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:03,983 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] [2021-11-03 03:47:04,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:04,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:04,198 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:04,199 INFO L85 PathProgramCache]: Analyzing trace with hash 469411572, now seen corresponding path program 1 times [2021-11-03 03:47:04,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:04,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726122129] [2021-11-03 03:47:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:04,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:04,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:04,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:04,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:47:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:04,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:47:04,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:05,189 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 03:47:05,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:05,737 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 03:47:05,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:05,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726122129] [2021-11-03 03:47:05,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726122129] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:05,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:05,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:47:05,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873548790] [2021-11-03 03:47:05,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:47:05,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:05,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:47:05,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:47:05,742 INFO L87 Difference]: Start difference. First operand 657 states and 1001 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:06,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:06,495 INFO L93 Difference]: Finished difference Result 1433 states and 2205 transitions. [2021-11-03 03:47:06,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:47:06,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 170 [2021-11-03 03:47:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:06,502 INFO L225 Difference]: With dead ends: 1433 [2021-11-03 03:47:06,502 INFO L226 Difference]: Without dead ends: 916 [2021-11-03 03:47:06,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 336 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 03:47:06,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-11-03 03:47:06,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2021-11-03 03:47:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 1.5202185792349727) internal successors, (1391), 915 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1391 transitions. [2021-11-03 03:47:06,537 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1391 transitions. Word has length 170 [2021-11-03 03:47:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:06,538 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 1391 transitions. [2021-11-03 03:47:06,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1391 transitions. [2021-11-03 03:47:06,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-03 03:47:06,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:06,542 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:47:06,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:06,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:06,758 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:06,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:06,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1159815289, now seen corresponding path program 1 times [2021-11-03 03:47:06,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:06,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707628521] [2021-11-03 03:47:06,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:06,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:06,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:06,762 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:06,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:47:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:07,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:47:07,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-03 03:47:08,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-03 03:47:08,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:08,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707628521] [2021-11-03 03:47:08,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707628521] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:08,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:08,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:47:08,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468335233] [2021-11-03 03:47:08,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:47:08,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:08,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:47:08,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:47:08,663 INFO L87 Difference]: Start difference. First operand 916 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:09,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:09,063 INFO L93 Difference]: Finished difference Result 1949 states and 2980 transitions. [2021-11-03 03:47:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:47:09,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 234 [2021-11-03 03:47:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:09,073 INFO L225 Difference]: With dead ends: 1949 [2021-11-03 03:47:09,073 INFO L226 Difference]: Without dead ends: 1173 [2021-11-03 03:47:09,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 464 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 03:47:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-03 03:47:09,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2021-11-03 03:47:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1172 states have (on average 1.515358361774744) internal successors, (1776), 1172 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1776 transitions. [2021-11-03 03:47:09,120 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1776 transitions. Word has length 234 [2021-11-03 03:47:09,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:09,121 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1776 transitions. [2021-11-03 03:47:09,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:09,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1776 transitions. [2021-11-03 03:47:09,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-03 03:47:09,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:09,128 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:47:09,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:09,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:09,350 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2069103727, now seen corresponding path program 1 times [2021-11-03 03:47:09,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:09,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038244440] [2021-11-03 03:47:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:09,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:09,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:09,353 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:09,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:47:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:10,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:47:10,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-03 03:47:10,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-03 03:47:11,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:11,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038244440] [2021-11-03 03:47:11,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038244440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:11,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:11,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:47:11,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50515273] [2021-11-03 03:47:11,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:47:11,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:11,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:47:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:47:11,802 INFO L87 Difference]: Start difference. First operand 1173 states and 1776 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 03:47:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:12,342 INFO L93 Difference]: Finished difference Result 2463 states and 3748 transitions. [2021-11-03 03:47:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:47:12,342 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 306 [2021-11-03 03:47:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:12,351 INFO L225 Difference]: With dead ends: 2463 [2021-11-03 03:47:12,351 INFO L226 Difference]: Without dead ends: 1430 [2021-11-03 03:47:12,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 608 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 03:47:12,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-11-03 03:47:12,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2021-11-03 03:47:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 1.5108467459762072) internal successors, (2159), 1429 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2159 transitions. [2021-11-03 03:47:12,413 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2159 transitions. Word has length 306 [2021-11-03 03:47:12,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:12,413 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 2159 transitions. [2021-11-03 03:47:12,414 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 03:47:12,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2159 transitions. [2021-11-03 03:47:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-03 03:47:12,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:12,422 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:47:12,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:12,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:12,639 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:12,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:12,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2124887066, now seen corresponding path program 1 times [2021-11-03 03:47:12,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:12,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236659016] [2021-11-03 03:47:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:12,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:12,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:12,643 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:12,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:47:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:13,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:47:13,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-11-03 03:47:14,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-11-03 03:47:15,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:15,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236659016] [2021-11-03 03:47:15,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236659016] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:15,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:15,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:47:15,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334341386] [2021-11-03 03:47:15,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:47:15,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:47:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:47:15,305 INFO L87 Difference]: Start difference. First operand 1430 states and 2159 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:15,799 INFO L93 Difference]: Finished difference Result 2975 states and 4509 transitions. [2021-11-03 03:47:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:47:15,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 378 [2021-11-03 03:47:15,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:15,809 INFO L225 Difference]: With dead ends: 2975 [2021-11-03 03:47:15,809 INFO L226 Difference]: Without dead ends: 1685 [2021-11-03 03:47:15,811 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 752 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 03:47:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-11-03 03:47:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1685. [2021-11-03 03:47:15,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 1.507125890736342) internal successors, (2538), 1684 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2538 transitions. [2021-11-03 03:47:15,883 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2538 transitions. Word has length 378 [2021-11-03 03:47:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:15,883 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 2538 transitions. [2021-11-03 03:47:15,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:15,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2538 transitions. [2021-11-03 03:47:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2021-11-03 03:47:15,894 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:15,895 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:47:15,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:16,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:16,116 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:16,117 INFO L85 PathProgramCache]: Analyzing trace with hash 906547015, now seen corresponding path program 1 times [2021-11-03 03:47:16,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:16,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027774268] [2021-11-03 03:47:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:16,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:16,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:16,120 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:16,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:47:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:17,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:47:17,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 1041 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-11-03 03:47:18,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 1041 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-11-03 03:47:19,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:19,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027774268] [2021-11-03 03:47:19,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027774268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:19,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:19,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:47:19,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382327682] [2021-11-03 03:47:19,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:47:19,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:47:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:47:19,343 INFO L87 Difference]: Start difference. First operand 1685 states and 2538 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 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 03:47:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:19,983 INFO L93 Difference]: Finished difference Result 3486 states and 5267 transitions. [2021-11-03 03:47:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:47:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 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 449 [2021-11-03 03:47:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:20,001 INFO L225 Difference]: With dead ends: 3486 [2021-11-03 03:47:20,001 INFO L226 Difference]: Without dead ends: 1941 [2021-11-03 03:47:20,004 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 894 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 03:47:20,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2021-11-03 03:47:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1941. [2021-11-03 03:47:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 1.5030927835051546) internal successors, (2916), 1940 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:20,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2916 transitions. [2021-11-03 03:47:20,095 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2916 transitions. Word has length 449 [2021-11-03 03:47:20,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:20,095 INFO L470 AbstractCegarLoop]: Abstraction has 1941 states and 2916 transitions. [2021-11-03 03:47:20,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 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 03:47:20,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2916 transitions. [2021-11-03 03:47:20,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-11-03 03:47:20,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:20,110 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:47:20,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:20,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:20,334 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:20,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1828760135, now seen corresponding path program 1 times [2021-11-03 03:47:20,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:20,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318779740] [2021-11-03 03:47:20,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:20,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:20,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:20,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:20,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:47:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:21,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:47:21,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2169 backedges. 1176 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2021-11-03 03:47:22,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2169 backedges. 1176 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2021-11-03 03:47:23,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:23,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318779740] [2021-11-03 03:47:23,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318779740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:23,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:23,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:47:23,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723185394] [2021-11-03 03:47:23,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:47:23,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:23,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:47:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:47:23,802 INFO L87 Difference]: Start difference. First operand 1941 states and 2916 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:24,427 INFO L93 Difference]: Finished difference Result 4002 states and 6026 transitions. [2021-11-03 03:47:24,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:47:24,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 486 [2021-11-03 03:47:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:24,441 INFO L225 Difference]: With dead ends: 4002 [2021-11-03 03:47:24,441 INFO L226 Difference]: Without dead ends: 2201 [2021-11-03 03:47:24,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 968 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 03:47:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2021-11-03 03:47:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2201. [2021-11-03 03:47:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2200 states have (on average 1.4986363636363635) internal successors, (3297), 2200 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:24,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3297 transitions. [2021-11-03 03:47:24,545 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3297 transitions. Word has length 486 [2021-11-03 03:47:24,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:24,545 INFO L470 AbstractCegarLoop]: Abstraction has 2201 states and 3297 transitions. [2021-11-03 03:47:24,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:24,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3297 transitions. [2021-11-03 03:47:24,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-03 03:47:24,553 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:24,553 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:47:24,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:24,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:24,777 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash 246609113, now seen corresponding path program 1 times [2021-11-03 03:47:24,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:24,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660031515] [2021-11-03 03:47:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:24,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:24,781 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:24,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:47:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:47:33,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:47:33,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:47:33,086 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 03:47:33,096 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 03:47:33,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:33,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 03:47:33,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:33,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-03 03:47:33,192 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 03:47:33,672 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-03 03:47:33,673 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 717 treesize of output 669 [2021-11-03 03:47:33,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:33,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 03:47:33,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:33,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-03 03:47:33,754 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 03:47:33,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:33,895 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 97 treesize of output 49 [2021-11-03 03:47:34,001 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-03 03:47:34,001 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 03:47:34,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:47:34,032 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 03:47:34,063 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 03:47:34,068 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 03:47:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2021-11-03 03:47:35,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:47:36,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:36,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-03 03:47:36,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:36,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-03 03:47:37,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:37,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-03 03:47:37,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:37,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-03 03:47:37,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:37,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-03 03:47:37,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:37,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-03 03:47:37,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:37,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-03 03:47:37,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:47:37,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-03 03:47:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2021-11-03 03:47:37,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:47:37,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660031515] [2021-11-03 03:47:37,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660031515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:47:37,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:47:37,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:47:37,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370287076] [2021-11-03 03:47:37,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:47:37,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:47:37,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:47:37,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:47:37,615 INFO L87 Difference]: Start difference. First operand 2201 states and 3297 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 03:47:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:47:58,785 INFO L93 Difference]: Finished difference Result 4399 states and 6590 transitions. [2021-11-03 03:47:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:47:58,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 519 [2021-11-03 03:47:58,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:47:58,800 INFO L225 Difference]: With dead ends: 4399 [2021-11-03 03:47:58,800 INFO L226 Difference]: Without dead ends: 2201 [2021-11-03 03:47:58,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1029 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 03:47:58,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2021-11-03 03:47:58,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2201. [2021-11-03 03:47:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2200 states have (on average 1.4981818181818183) internal successors, (3296), 2200 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:47:58,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3296 transitions. [2021-11-03 03:47:58,907 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3296 transitions. Word has length 519 [2021-11-03 03:47:58,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:47:58,907 INFO L470 AbstractCegarLoop]: Abstraction has 2201 states and 3296 transitions. [2021-11-03 03:47:58,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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 03:47:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3296 transitions. [2021-11-03 03:47:58,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-03 03:47:58,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:47:58,915 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:47:58,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:47:59,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:47:59,137 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:47:59,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:47:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash -251223077, now seen corresponding path program 1 times [2021-11-03 03:47:59,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:47:59,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510090877] [2021-11-03 03:47:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:47:59,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:47:59,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:47:59,148 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:47:59,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:48:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:03,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:48:03,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:03,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:03,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:03,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:03,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:03,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:03,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:48:03,825 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-03 03:48:03,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-03 03:48:03,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:48:03,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:48:03,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:48:04,142 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-03 03:48:04,142 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 72 treesize of output 89 [2021-11-03 03:48:05,286 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 03:48:05,286 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 110 treesize of output 38 [2021-11-03 03:48:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2021-11-03 03:48:06,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:48:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2021-11-03 03:48:07,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:48:07,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510090877] [2021-11-03 03:48:07,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510090877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:48:07,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:48:07,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-03 03:48:07,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120928255] [2021-11-03 03:48:07,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:48:07,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:48:07,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:48:07,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:48:07,920 INFO L87 Difference]: Start difference. First operand 2201 states and 3296 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:48:46,896 INFO L93 Difference]: Finished difference Result 8318 states and 12518 transitions. [2021-11-03 03:48:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:48:46,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 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 519 [2021-11-03 03:48:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:48:46,931 INFO L225 Difference]: With dead ends: 8318 [2021-11-03 03:48:46,932 INFO L226 Difference]: Without dead ends: 6127 [2021-11-03 03:48:46,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1030 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:48:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6127 states. [2021-11-03 03:48:47,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6127 to 2625. [2021-11-03 03:48:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2625 states, 2624 states have (on average 1.5342987804878048) internal successors, (4026), 2624 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2625 states to 2625 states and 4026 transitions. [2021-11-03 03:48:47,145 INFO L78 Accepts]: Start accepts. Automaton has 2625 states and 4026 transitions. Word has length 519 [2021-11-03 03:48:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:48:47,147 INFO L470 AbstractCegarLoop]: Abstraction has 2625 states and 4026 transitions. [2021-11-03 03:48:47,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:48:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2625 states and 4026 transitions. [2021-11-03 03:48:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-03 03:48:47,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:48:47,156 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:48:47,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:48:47,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:48:47,377 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:48:47,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:48:47,378 INFO L85 PathProgramCache]: Analyzing trace with hash 819339929, now seen corresponding path program 1 times [2021-11-03 03:48:47,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:48:47,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513973748] [2021-11-03 03:48:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:48:47,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:48:47,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:48:47,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:48:47,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:48:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:48:56,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:48:56,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:48:57,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:57,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:57,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:48:57,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:48:57,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:48:57,347 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-03 03:48:57,348 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 03:48:57,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:48:57,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:48:57,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:48:57,717 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-03 03:48:57,717 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 03:49:00,041 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 03:49:00,041 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 03:49:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2021-11-03 03:49:00,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:49:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2021-11-03 03:49:01,794 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:49:01,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513973748] [2021-11-03 03:49:01,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513973748] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:49:01,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:49:01,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-03 03:49:01,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069078688] [2021-11-03 03:49:01,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:49:01,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:49:01,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:49:01,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:49:01,797 INFO L87 Difference]: Start difference. First operand 2625 states and 4026 transitions. Second operand has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:49:58,571 INFO L93 Difference]: Finished difference Result 11056 states and 16877 transitions. [2021-11-03 03:49:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:49:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 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 519 [2021-11-03 03:49:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:49:58,621 INFO L225 Difference]: With dead ends: 11056 [2021-11-03 03:49:58,622 INFO L226 Difference]: Without dead ends: 8441 [2021-11-03 03:49:58,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 1030 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:49:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2021-11-03 03:49:58,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 3720. [2021-11-03 03:49:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3719 states have (on average 1.6141435869857488) internal successors, (6003), 3719 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6003 transitions. [2021-11-03 03:49:58,924 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6003 transitions. Word has length 519 [2021-11-03 03:49:58,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:49:58,925 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6003 transitions. [2021-11-03 03:49:58,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6003 transitions. [2021-11-03 03:49:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-03 03:49:58,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:49:58,936 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:49:58,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:49:59,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:49:59,153 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:49:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:49:59,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1068795037, now seen corresponding path program 1 times [2021-11-03 03:49:59,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:49:59,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586137919] [2021-11-03 03:49:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:49:59,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:49:59,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:49:59,157 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:49:59,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733e062b-7e32-4adb-b005-7b555d609dd4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 03:50:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:21,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-03 03:50:21,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:52:17,875 WARN L207 SmtUtils]: Spent 1.94 m on a formula simplification. DAG size of input: 59 DAG size of output: 15 [2021-11-03 03:52:17,880 INFO L354 Elim1Store]: treesize reduction 177, result has 15.3 percent of original size [2021-11-03 03:52:17,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 5166 treesize of output 5178 [2021-11-03 03:52:17,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:17,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5165 treesize of output 5129 [2021-11-03 03:52:18,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:52:18,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79473 [2021-11-03 03:52:18,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:52:18,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216788 [2021-11-03 03:52:18,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:18,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:18,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:52:18,102 INFO L190 IndexEqualityManager]: detected not equals via solver