./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs --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 e951bfa557af694cc1e8699e574c7b4724d1be498cab6731e1080e9fedb61dc3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:51:08,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:51:08,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:51:09,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:51:09,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:51:09,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:51:09,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:51:09,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:51:09,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:51:09,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:51:09,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:51:09,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:51:09,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:51:09,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:51:09,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:51:09,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:51:09,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:51:09,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:51:09,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:51:09,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:51:09,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:51:09,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:51:09,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:51:09,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:51:09,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:51:09,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:51:09,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:51:09,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:51:09,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:51:09,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:51:09,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:51:09,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:51:09,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:51:09,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:51:09,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:51:09,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:51:09,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:51:09,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:51:09,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:51:09,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:51:09,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:51:09,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:51:09,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:51:09,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:51:09,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:51:09,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:51:09,124 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:51:09,125 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:51:09,125 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:51:09,125 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:51:09,125 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:51:09,125 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:51:09,126 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:51:09,127 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:51:09,127 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:51:09,127 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:51:09,127 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:51:09,128 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:51:09,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:51:09,129 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:51:09,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:51:09,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:51:09,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:51:09,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:51:09,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:51:09,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:51:09,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:51:09,131 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:51:09,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:51:09,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:51:09,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:51:09,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:51:09,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:51:09,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:51:09,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:51:09,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:51:09,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:51:09,135 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:51:09,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:51:09,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:51:09,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:51:09,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:51:09,136 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_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e951bfa557af694cc1e8699e574c7b4724d1be498cab6731e1080e9fedb61dc3 [2021-11-19 15:51:09,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:51:09,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:51:09,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:51:09,433 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:51:09,434 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:51:09,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c [2021-11-19 15:51:09,519 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/data/8c9827dc5/d374ab9863584acf9c8b6cafa399636d/FLAG587bb4963 [2021-11-19 15:51:10,072 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:51:10,073 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c [2021-11-19 15:51:10,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/data/8c9827dc5/d374ab9863584acf9c8b6cafa399636d/FLAG587bb4963 [2021-11-19 15:51:10,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/data/8c9827dc5/d374ab9863584acf9c8b6cafa399636d [2021-11-19 15:51:10,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:51:10,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:51:10,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:51:10,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:51:10,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:51:10,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:51:10" (1/1) ... [2021-11-19 15:51:10,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313c038a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:10, skipping insertion in model container [2021-11-19 15:51:10,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:51:10" (1/1) ... [2021-11-19 15:51:10,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:51:10,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:51:10,897 WARN L230 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_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c[74353,74366] [2021-11-19 15:51:10,917 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:51:10,938 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) [2021-11-19 15:51:10,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57c2de60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:10, skipping insertion in model container [2021-11-19 15:51:10,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:51:10,939 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:51:10,941 INFO L158 Benchmark]: Toolchain (without parser) took 604.80ms. Allocated memory is still 130.0MB. Free memory was 93.6MB in the beginning and 94.5MB in the end (delta: -831.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:51:10,942 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 88.1MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 43.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:51:10,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.03ms. Allocated memory is still 130.0MB. Free memory was 93.4MB in the beginning and 94.5MB in the end (delta: -1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:51:10,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 88.1MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 43.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.03ms. Allocated memory is still 130.0MB. Free memory was 93.4MB in the beginning and 94.5MB in the end (delta: -1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * 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_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs --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 e951bfa557af694cc1e8699e574c7b4724d1be498cab6731e1080e9fedb61dc3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:51:13,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:51:13,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:51:13,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:51:13,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:51:13,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:51:13,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:51:13,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:51:13,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:51:13,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:51:13,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:51:13,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:51:13,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:51:13,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:51:13,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:51:13,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:51:13,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:51:13,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:51:13,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:51:13,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:51:13,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:51:13,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:51:13,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:51:13,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:51:13,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:51:13,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:51:13,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:51:13,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:51:13,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:51:13,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:51:13,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:51:13,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:51:13,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:51:13,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:51:13,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:51:13,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:51:13,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:51:13,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:51:13,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:51:13,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:51:13,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:51:13,364 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:51:13,412 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:51:13,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:51:13,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:51:13,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:51:13,414 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:51:13,415 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:51:13,415 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:51:13,415 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:51:13,416 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:51:13,416 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:51:13,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:51:13,419 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:51:13,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:51:13,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:51:13,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:51:13,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:51:13,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:51:13,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:51:13,421 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:51:13,421 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:51:13,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:51:13,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:51:13,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:51:13,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:51:13,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:51:13,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:51:13,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:51:13,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:51:13,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:51:13,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:51:13,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:51:13,424 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:51:13,424 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:13,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:51:13,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:51:13,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:51:13,426 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_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e951bfa557af694cc1e8699e574c7b4724d1be498cab6731e1080e9fedb61dc3 [2021-11-19 15:51:13,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:51:13,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:51:13,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:51:13,823 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:51:13,824 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:51:13,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c [2021-11-19 15:51:13,908 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/data/029274453/1cf9beec20b44ae49c80cf52e4d84ba5/FLAG7f9154bb6 [2021-11-19 15:51:14,717 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:51:14,718 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c [2021-11-19 15:51:14,740 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/data/029274453/1cf9beec20b44ae49c80cf52e4d84ba5/FLAG7f9154bb6 [2021-11-19 15:51:14,872 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/data/029274453/1cf9beec20b44ae49c80cf52e4d84ba5 [2021-11-19 15:51:14,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:51:14,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:51:14,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:51:14,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:51:14,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:51:14,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:51:14" (1/1) ... [2021-11-19 15:51:14,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe22e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:14, skipping insertion in model container [2021-11-19 15:51:14,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:51:14" (1/1) ... [2021-11-19 15:51:14,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:51:14,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:51:15,454 WARN L230 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_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c[74353,74366] [2021-11-19 15:51:15,475 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:51:15,504 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:51:15,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:51:15,647 WARN L230 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_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c[74353,74366] [2021-11-19 15:51:15,650 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:51:15,656 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:51:15,772 WARN L230 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_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c[74353,74366] [2021-11-19 15:51:15,775 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:51:15,801 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:51:15,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15 WrapperNode [2021-11-19 15:51:15,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:51:15,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:51:15,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:51:15,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:51:15,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (1/1) ... [2021-11-19 15:51:15,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (1/1) ... [2021-11-19 15:51:15,917 INFO L137 Inliner]: procedures = 36, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 761 [2021-11-19 15:51:15,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:51:15,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:51:15,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:51:15,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:51:15,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (1/1) ... [2021-11-19 15:51:15,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (1/1) ... [2021-11-19 15:51:15,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (1/1) ... [2021-11-19 15:51:15,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (1/1) ... [2021-11-19 15:51:16,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (1/1) ... [2021-11-19 15:51:16,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (1/1) ... [2021-11-19 15:51:16,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (1/1) ... [2021-11-19 15:51:16,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:51:16,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:51:16,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:51:16,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:51:16,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (1/1) ... [2021-11-19 15:51:16,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:51:16,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:51:16,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:51:16,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:51:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:51:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:51:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:51:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:51:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:51:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:51:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:51:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:51:16,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:51:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:51:16,299 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:51:16,301 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:51:16,319 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 15:51:25,827 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-19 15:51:25,828 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-19 15:51:25,828 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:51:25,836 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:51:25,836 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 15:51:25,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:51:25 BoogieIcfgContainer [2021-11-19 15:51:25,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:51:25,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:51:25,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:51:25,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:51:25,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:51:14" (1/3) ... [2021-11-19 15:51:25,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d09c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:51:25, skipping insertion in model container [2021-11-19 15:51:25,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:51:15" (2/3) ... [2021-11-19 15:51:25,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d09c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:51:25, skipping insertion in model container [2021-11-19 15:51:25,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:51:25" (3/3) ... [2021-11-19 15:51:25,846 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.13.i.cil-2.c [2021-11-19 15:51:25,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:51:25,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:51:25,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:51:25,913 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 [2021-11-19 15:51:25,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:51:25,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 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) [2021-11-19 15:51:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 15:51:25,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:25,941 INFO L514 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] [2021-11-19 15:51:25,941 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:25,947 INFO L85 PathProgramCache]: Analyzing trace with hash -442385417, now seen corresponding path program 1 times [2021-11-19 15:51:25,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:25,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85962998] [2021-11-19 15:51:25,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:25,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:25,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:25,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:25,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:51:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:26,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:51:26,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:26,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:26,676 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:26,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85962998] [2021-11-19 15:51:26,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85962998] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:26,677 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:26,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:51:26,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759996922] [2021-11-19 15:51:26,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:26,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:51:26,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:51:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:26,713 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 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 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:26,919 INFO L93 Difference]: Finished difference Result 566 states and 965 transitions. [2021-11-19 15:51:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:51:26,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-19 15:51:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:26,944 INFO L225 Difference]: With dead ends: 566 [2021-11-19 15:51:26,945 INFO L226 Difference]: Without dead ends: 387 [2021-11-19 15:51:26,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:26,956 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 402 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:26,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 670 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:51:26,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-19 15:51:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 385. [2021-11-19 15:51:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5286458333333333) internal successors, (587), 384 states have internal predecessors, (587), 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) [2021-11-19 15:51:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 587 transitions. [2021-11-19 15:51:27,053 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 587 transitions. Word has length 37 [2021-11-19 15:51:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:27,054 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 587 transitions. [2021-11-19 15:51:27,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 587 transitions. [2021-11-19 15:51:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 15:51:27,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:27,064 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 15:51:27,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 15:51:27,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:27,273 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:27,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:27,273 INFO L85 PathProgramCache]: Analyzing trace with hash 457194935, now seen corresponding path program 1 times [2021-11-19 15:51:27,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:27,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587950133] [2021-11-19 15:51:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:27,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:27,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:27,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:27,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:51:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:27,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:51:27,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:27,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:27,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:27,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587950133] [2021-11-19 15:51:27,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587950133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:27,960 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:27,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:51:27,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450969587] [2021-11-19 15:51:27,960 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:27,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:51:27,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:27,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:51:27,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:27,963 INFO L87 Difference]: Start difference. First operand 385 states and 587 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-11-19 15:51:28,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:28,513 INFO L93 Difference]: Finished difference Result 880 states and 1354 transitions. [2021-11-19 15:51:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:51:28,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 60 [2021-11-19 15:51:28,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:28,529 INFO L225 Difference]: With dead ends: 880 [2021-11-19 15:51:28,530 INFO L226 Difference]: Without dead ends: 629 [2021-11-19 15:51:28,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:28,533 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 305 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:28,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 722 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 15:51:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-11-19 15:51:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 627. [2021-11-19 15:51:28,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.5191693290734825) internal successors, (951), 626 states have internal predecessors, (951), 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) [2021-11-19 15:51:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 951 transitions. [2021-11-19 15:51:28,575 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 951 transitions. Word has length 60 [2021-11-19 15:51:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:28,577 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 951 transitions. [2021-11-19 15:51:28,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-11-19 15:51:28,577 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 951 transitions. [2021-11-19 15:51:28,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 15:51:28,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:28,586 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:28,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:28,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:28,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash 335691035, now seen corresponding path program 1 times [2021-11-19 15:51:28,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:28,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394951031] [2021-11-19 15:51:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:28,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:28,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:28,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:28,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:51:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:29,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:51:29,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 15:51:29,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 15:51:29,821 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:29,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394951031] [2021-11-19 15:51:29,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394951031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:29,822 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:29,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:51:29,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115800125] [2021-11-19 15:51:29,822 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:29,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:51:29,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:29,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:51:29,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:29,824 INFO L87 Difference]: Start difference. First operand 627 states and 951 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2021-11-19 15:51:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:30,537 INFO L93 Difference]: Finished difference Result 1366 states and 2084 transitions. [2021-11-19 15:51:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:51:30,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 112 [2021-11-19 15:51:30,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:30,543 INFO L225 Difference]: With dead ends: 1366 [2021-11-19 15:51:30,543 INFO L226 Difference]: Without dead ends: 873 [2021-11-19 15:51:30,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:30,552 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 303 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:30,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 726 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 15:51:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-11-19 15:51:30,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2021-11-19 15:51:30,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5160550458715596) internal successors, (1322), 872 states have internal predecessors, (1322), 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) [2021-11-19 15:51:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1322 transitions. [2021-11-19 15:51:30,598 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1322 transitions. Word has length 112 [2021-11-19 15:51:30,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:30,599 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1322 transitions. [2021-11-19 15:51:30,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2021-11-19 15:51:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1322 transitions. [2021-11-19 15:51:30,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-19 15:51:30,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:30,604 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-19 15:51:30,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:30,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:30,824 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:30,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:30,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1244955076, now seen corresponding path program 1 times [2021-11-19 15:51:30,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:30,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675544031] [2021-11-19 15:51:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:30,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:30,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:30,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:30,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:51:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:31,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:51:31,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 15:51:31,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 15:51:31,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:31,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675544031] [2021-11-19 15:51:31,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675544031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:31,975 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:31,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:51:31,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980102360] [2021-11-19 15:51:31,975 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:31,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:51:31,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:31,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:51:31,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:31,977 INFO L87 Difference]: Start difference. First operand 873 states and 1322 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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) [2021-11-19 15:51:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:32,996 INFO L93 Difference]: Finished difference Result 1858 states and 2823 transitions. [2021-11-19 15:51:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:51:32,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 149 [2021-11-19 15:51:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:33,004 INFO L225 Difference]: With dead ends: 1858 [2021-11-19 15:51:33,005 INFO L226 Difference]: Without dead ends: 1119 [2021-11-19 15:51:33,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:33,007 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 298 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:33,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 725 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 15:51:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-19 15:51:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1119. [2021-11-19 15:51:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.5107334525939178) internal successors, (1689), 1118 states have internal predecessors, (1689), 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) [2021-11-19 15:51:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1689 transitions. [2021-11-19 15:51:33,065 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1689 transitions. Word has length 149 [2021-11-19 15:51:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:33,066 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 1689 transitions. [2021-11-19 15:51:33,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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) [2021-11-19 15:51:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1689 transitions. [2021-11-19 15:51:33,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-19 15:51:33,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:33,071 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:33,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:33,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:33,286 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:33,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:33,286 INFO L85 PathProgramCache]: Analyzing trace with hash -490932893, now seen corresponding path program 1 times [2021-11-19 15:51:33,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:33,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233135021] [2021-11-19 15:51:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:33,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:33,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:33,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:33,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:51:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:34,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 15:51:34,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:34,178 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 [2021-11-19 15:51:34,189 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 [2021-11-19 15:51:34,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:34,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-19 15:51:34,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-19 15:51:34,765 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-19 15:51:34,765 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 601 treesize of output 573 [2021-11-19 15:51:34,875 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-19 15:51:34,875 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 [2021-11-19 15:51:34,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:34,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-19 15:51:34,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:34,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-19 15:51:34,920 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 [2021-11-19 15:51:34,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:34,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,061 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 [2021-11-19 15:51:35,160 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-19 15:51:35,160 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 [2021-11-19 15:51:35,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:35,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-19 15:51:35,222 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 [2021-11-19 15:51:35,226 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 [2021-11-19 15:51:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-19 15:51:35,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:36,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:36,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-19 15:51:36,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:36,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-19 15:51:36,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:36,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-19 15:51:36,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:36,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-19 15:51:36,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:36,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-19 15:51:36,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:36,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-19 15:51:36,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:36,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-19 15:51:36,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:51:36,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-19 15:51:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-19 15:51:36,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:36,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233135021] [2021-11-19 15:51:36,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233135021] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:36,804 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:36,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 15:51:36,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290963909] [2021-11-19 15:51:36,804 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:36,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:51:36,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:51:36,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:51:36,809 INFO L87 Difference]: Start difference. First operand 1119 states and 1689 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2021-11-19 15:51:38,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:51:40,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:51:42,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:51:52,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:51:55,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:51:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:57,579 INFO L93 Difference]: Finished difference Result 2235 states and 3374 transitions. [2021-11-19 15:51:57,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:51:57,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 165 [2021-11-19 15:51:57,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:57,588 INFO L225 Difference]: With dead ends: 2235 [2021-11-19 15:51:57,588 INFO L226 Difference]: Without dead ends: 1119 [2021-11-19 15:51:57,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 321 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:51:57,591 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:57,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1136 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 3 Unknown, 58 Unchecked, 20.6s Time] [2021-11-19 15:51:57,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-19 15:51:57,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1119. [2021-11-19 15:51:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.5098389982110911) internal successors, (1688), 1118 states have internal predecessors, (1688), 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) [2021-11-19 15:51:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1688 transitions. [2021-11-19 15:51:57,642 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1688 transitions. Word has length 165 [2021-11-19 15:51:57,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:57,642 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 1688 transitions. [2021-11-19 15:51:57,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2021-11-19 15:51:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1688 transitions. [2021-11-19 15:51:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-19 15:51:57,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:57,646 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:57,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:57,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:57,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash 7623909, now seen corresponding path program 1 times [2021-11-19 15:51:57,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:57,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453864381] [2021-11-19 15:51:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:57,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:57,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:57,864 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:57,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:51:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:58,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:51:58,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:58,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:58,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:58,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:58,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:58,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:58,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:51:58,821 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-19 15:51:58,821 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 [2021-11-19 15:51:58,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:51:58,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:51:58,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:51:59,191 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-19 15:51:59,191 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 [2021-11-19 15:52:00,405 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 15:52:00,406 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 [2021-11-19 15:52:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 15:52:00,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 15:52:01,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:52:01,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453864381] [2021-11-19 15:52:01,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453864381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:01,184 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:01,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-19 15:52:01,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324545436] [2021-11-19 15:52:01,185 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:01,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:52:01,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:52:01,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:52:01,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:52:01,187 INFO L87 Difference]: Start difference. First operand 1119 states and 1688 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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) [2021-11-19 15:52:03,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:05,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:15,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:20,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:23,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:34,400 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:36,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:37,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:40,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:40,295 INFO L93 Difference]: Finished difference Result 4222 states and 6394 transitions. [2021-11-19 15:52:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:52:40,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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 165 [2021-11-19 15:52:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:40,315 INFO L225 Difference]: With dead ends: 4222 [2021-11-19 15:52:40,315 INFO L226 Difference]: Without dead ends: 3113 [2021-11-19 15:52:40,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:52:40,319 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 377 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 86 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:40,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 793 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 733 Invalid, 2 Unknown, 0 Unchecked, 38.9s Time] [2021-11-19 15:52:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2021-11-19 15:52:40,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 1343. [2021-11-19 15:52:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.5454545454545454) internal successors, (2074), 1342 states have internal predecessors, (2074), 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) [2021-11-19 15:52:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 2074 transitions. [2021-11-19 15:52:40,422 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 2074 transitions. Word has length 165 [2021-11-19 15:52:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:40,423 INFO L470 AbstractCegarLoop]: Abstraction has 1343 states and 2074 transitions. [2021-11-19 15:52:40,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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) [2021-11-19 15:52:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 2074 transitions. [2021-11-19 15:52:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-19 15:52:40,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:40,428 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:52:40,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:40,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:52:40,644 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:52:40,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:40,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2042784989, now seen corresponding path program 1 times [2021-11-19 15:52:40,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:52:40,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272499454] [2021-11-19 15:52:40,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:40,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:52:40,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:52:40,647 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:52:40,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:52:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:41,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:52:41,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:41,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:52:41,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:52:41,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:52:41,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:52:41,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:52:41,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:52:41,857 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-19 15:52:41,857 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 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-19 15:52:43,307 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 15:52:43,307 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 107 treesize of output 35 [2021-11-19 15:52:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-19 15:52:43,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-19 15:52:43,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:52:43,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272499454] [2021-11-19 15:52:43,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272499454] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:43,846 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:52:43,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:52:43,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791150879] [2021-11-19 15:52:43,847 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:43,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:52:43,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:52:43,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:52:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:52:43,848 INFO L87 Difference]: Start difference. First operand 1343 states and 2074 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2021-11-19 15:52:45,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:47,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:58,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:53:00,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:53:01,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:53:09,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:09,489 INFO L93 Difference]: Finished difference Result 3248 states and 5018 transitions. [2021-11-19 15:53:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:53:09,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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 165 [2021-11-19 15:53:09,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:09,506 INFO L225 Difference]: With dead ends: 3248 [2021-11-19 15:53:09,507 INFO L226 Difference]: Without dead ends: 1915 [2021-11-19 15:53:09,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:53:09,509 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 55 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:09,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 724 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 333 Invalid, 2 Unknown, 0 Unchecked, 25.5s Time] [2021-11-19 15:53:09,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2021-11-19 15:53:09,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1595. [2021-11-19 15:53:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.5777917189460477) internal successors, (2515), 1594 states have internal predecessors, (2515), 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) [2021-11-19 15:53:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2515 transitions. [2021-11-19 15:53:09,606 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2515 transitions. Word has length 165 [2021-11-19 15:53:09,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:09,607 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 2515 transitions. [2021-11-19 15:53:09,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2021-11-19 15:53:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2515 transitions. [2021-11-19 15:53:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-19 15:53:09,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:09,612 INFO L514 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] [2021-11-19 15:53:09,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:53:09,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:53:09,824 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:53:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:09,825 INFO L85 PathProgramCache]: Analyzing trace with hash -266035401, now seen corresponding path program 1 times [2021-11-19 15:53:09,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:53:09,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439862219] [2021-11-19 15:53:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:09,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:53:09,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:53:09,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:53:09,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfcaf8cc-fcc1-4459-a5b5-955c6c905c2f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:53:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:11,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-19 15:53:11,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:55:04,656 WARN L227 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 66 DAG size of output: 15 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:55:04,657 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-19 15:55:04,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4753 treesize of output 4764 [2021-11-19 15:55:04,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,772 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 4746 treesize of output 4710 [2021-11-19 15:55:04,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:55:04,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6788 [2021-11-19 15:55:04,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 7212 treesize of output 6832 [2021-11-19 15:55:04,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:04,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 5071 treesize of output 4652 [2021-11-19 15:55:04,978 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 5252 treesize of output 5026 [2021-11-19 15:55:04,992 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 15:55:05,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:05,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:05,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:05,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:05,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:55:05,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 16:04:18,694 WARN L227 SmtUtils]: Spent 9.23m on a formula simplification. DAG size of input: 342 DAG size of output: 104 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 16:04:18,695 INFO L354 Elim1Store]: treesize reduction 4134, result has 9.2 percent of original size [2021-11-19 16:04:18,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 12 new quantified variables, introduced 22 case distinctions, treesize of input 5245 treesize of output 4661 [2021-11-19 16:04:18,765 INFO L190 IndexEqualityManager]: detected not equals via solver