./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:39:44,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:39:44,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:39:44,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:39:44,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:39:44,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:39:44,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:39:44,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:39:44,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:39:44,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:39:44,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:39:44,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:39:44,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:39:44,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:39:44,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:39:44,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:39:44,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:39:44,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:39:44,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:39:44,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:39:44,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:39:44,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:39:44,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:39:44,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:39:44,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:39:44,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:39:44,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:39:44,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:39:44,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:39:44,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:39:44,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:39:44,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:39:44,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:39:44,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:39:44,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:39:44,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:39:44,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:39:44,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:39:44,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:39:44,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:39:44,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:39:44,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:39:44,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:39:44,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:39:44,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:39:44,315 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:39:44,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:39:44,315 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:39:44,316 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:39:44,316 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:39:44,323 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:39:44,324 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:39:44,325 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:39:44,325 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:39:44,325 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:39:44,326 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:39:44,326 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:39:44,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:39:44,327 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:39:44,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:39:44,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:39:44,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:39:44,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:39:44,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:39:44,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:39:44,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:39:44,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:39:44,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:39:44,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:39:44,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:39:44,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:39:44,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:39:44,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:44,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:39:44,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:39:44,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:39:44,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:39:44,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:39:44,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:39:44,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:39:44,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:39:44,336 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_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 [2021-11-07 01:39:44,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:39:44,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:39:44,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:39:44,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:39:44,742 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:39:44,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-07 01:39:44,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/data/53f41936d/59bb5134fae446e5aaf72260cd4d11f2/FLAGdd10a1344 [2021-11-07 01:39:45,707 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:39:45,707 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-07 01:39:45,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/data/53f41936d/59bb5134fae446e5aaf72260cd4d11f2/FLAGdd10a1344 [2021-11-07 01:39:45,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/data/53f41936d/59bb5134fae446e5aaf72260cd4d11f2 [2021-11-07 01:39:45,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:39:45,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:39:45,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:45,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:39:45,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:39:45,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:45" (1/1) ... [2021-11-07 01:39:45,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247e6ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:45, skipping insertion in model container [2021-11-07 01:39:45,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:45" (1/1) ... [2021-11-07 01:39:45,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:39:45,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:46,543 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-07 01:39:46,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:46,589 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) [2021-11-07 01:39:46,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e690564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46, skipping insertion in model container [2021-11-07 01:39:46,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:46,590 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:39:46,592 INFO L168 Benchmark]: Toolchain (without parser) took 731.38 ms. Allocated memory is still 102.8 MB. Free memory was 66.6 MB in the beginning and 66.6 MB in the end (delta: -11.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:46,593 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 59.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:39:46,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.90 ms. Allocated memory is still 102.8 MB. Free memory was 66.4 MB in the beginning and 66.6 MB in the end (delta: -204.7 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:46,599 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 59.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 727.90 ms. Allocated memory is still 102.8 MB. Free memory was 66.4 MB in the beginning and 66.6 MB in the end (delta: -204.7 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:39:49,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:39:49,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:39:49,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:39:49,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:39:49,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:39:49,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:39:49,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:39:49,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:39:49,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:39:49,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:39:49,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:39:49,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:39:49,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:39:49,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:39:49,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:39:49,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:39:49,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:39:49,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:39:49,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:39:49,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:39:49,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:39:49,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:39:49,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:39:49,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:39:49,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:39:49,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:39:49,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:39:49,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:39:49,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:39:49,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:39:49,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:39:49,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:39:49,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:39:49,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:39:49,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:39:49,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:39:49,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:39:49,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:39:49,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:39:49,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:39:49,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:39:49,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:39:49,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:39:49,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:39:49,318 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:39:49,318 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:39:49,319 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:39:49,319 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:39:49,319 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:39:49,320 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:39:49,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:39:49,323 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:39:49,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:39:49,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:39:49,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:39:49,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:39:49,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:39:49,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:39:49,325 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:39:49,325 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:39:49,327 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:39:49,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:39:49,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:39:49,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:39:49,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:39:49,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:39:49,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:39:49,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:49,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:39:49,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:39:49,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:39:49,337 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:39:49,337 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:49,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:39:49,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:39:49,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:39:49,339 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_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c787ca3f5ef50a57f784051363b84589420330fab7f782436c3962ae2d911801 [2021-11-07 01:39:49,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:39:49,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:39:49,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:39:49,862 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:39:49,863 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:39:49,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-07 01:39:49,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/data/bfc05a68f/1485511e20f64e98a1663797aaa40fe9/FLAG8f731fbaf [2021-11-07 01:39:50,836 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:39:50,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c [2021-11-07 01:39:50,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/data/bfc05a68f/1485511e20f64e98a1663797aaa40fe9/FLAG8f731fbaf [2021-11-07 01:39:50,997 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/data/bfc05a68f/1485511e20f64e98a1663797aaa40fe9 [2021-11-07 01:39:51,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:39:51,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:39:51,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:51,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:39:51,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:39:51,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:50" (1/1) ... [2021-11-07 01:39:51,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7882b158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:51, skipping insertion in model container [2021-11-07 01:39:51,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:50" (1/1) ... [2021-11-07 01:39:51,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:39:51,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:51,782 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-07 01:39:51,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:51,845 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:39:51,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:52,063 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-07 01:39:52,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:52,097 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:39:52,316 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/sv-benchmarks/c/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2021-11-07 01:39:52,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:52,366 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:39:52,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52 WrapperNode [2021-11-07 01:39:52,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:52,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:52,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:39:52,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:39:52,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (1/1) ... [2021-11-07 01:39:52,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (1/1) ... [2021-11-07 01:39:52,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:52,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:39:52,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:39:52,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:39:52,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (1/1) ... [2021-11-07 01:39:52,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (1/1) ... [2021-11-07 01:39:52,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (1/1) ... [2021-11-07 01:39:52,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (1/1) ... [2021-11-07 01:39:52,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (1/1) ... [2021-11-07 01:39:52,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (1/1) ... [2021-11-07 01:39:52,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (1/1) ... [2021-11-07 01:39:52,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:39:52,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:39:52,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:39:52,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:39:52,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (1/1) ... [2021-11-07 01:39:52,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:52,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:52,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:39:52,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:39:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:39:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:39:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:39:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:39:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:39:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:39:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:39:52,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:39:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:39:53,053 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 01:40:02,710 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-07 01:40:02,710 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-07 01:40:02,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:40:02,726 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 01:40:02,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:02 BoogieIcfgContainer [2021-11-07 01:40:02,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:40:02,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:40:02,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:40:02,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:40:02,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:39:50" (1/3) ... [2021-11-07 01:40:02,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71df387d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:02, skipping insertion in model container [2021-11-07 01:40:02,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:52" (2/3) ... [2021-11-07 01:40:02,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71df387d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:02, skipping insertion in model container [2021-11-07 01:40:02,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:02" (3/3) ... [2021-11-07 01:40:02,742 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.14.i.cil-1.c [2021-11-07 01:40:02,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:40:02,750 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:40:02,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:40:02,835 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 [2021-11-07 01:40:02,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:40:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 154 states have (on average 1.7272727272727273) internal successors, (266), 155 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:40:02,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:02,878 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:02,878 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1590777164, now seen corresponding path program 1 times [2021-11-07 01:40:02,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:02,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356623416] [2021-11-07 01:40:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:02,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:02,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:02,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:02,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:40:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:03,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:03,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:03,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:04,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:04,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356623416] [2021-11-07 01:40:04,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356623416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:04,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:04,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:04,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740785092] [2021-11-07 01:40:04,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:04,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:04,072 INFO L87 Difference]: Start difference. First operand has 156 states, 154 states have (on average 1.7272727272727273) internal successors, (266), 155 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:04,393 INFO L93 Difference]: Finished difference Result 586 states and 1008 transitions. [2021-11-07 01:40:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:04,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 01:40:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:04,414 INFO L225 Difference]: With dead ends: 586 [2021-11-07 01:40:04,414 INFO L226 Difference]: Without dead ends: 401 [2021-11-07 01:40:04,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-07 01:40:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2021-11-07 01:40:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.535) internal successors, (614), 400 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 614 transitions. [2021-11-07 01:40:04,500 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 614 transitions. Word has length 45 [2021-11-07 01:40:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:04,501 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 614 transitions. [2021-11-07 01:40:04,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 614 transitions. [2021-11-07 01:40:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:40:04,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:04,511 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:04,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:04,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:04,712 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:04,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1658829835, now seen corresponding path program 1 times [2021-11-07 01:40:04,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:04,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619570314] [2021-11-07 01:40:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:04,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:04,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:04,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:04,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:40:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:05,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:05,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:05,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:06,136 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:06,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619570314] [2021-11-07 01:40:06,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619570314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:06,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:06,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:06,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406059275] [2021-11-07 01:40:06,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:06,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:06,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:06,146 INFO L87 Difference]: Start difference. First operand 401 states and 614 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:07,177 INFO L93 Difference]: Finished difference Result 918 states and 1428 transitions. [2021-11-07 01:40:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 01:40:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:07,185 INFO L225 Difference]: With dead ends: 918 [2021-11-07 01:40:07,186 INFO L226 Difference]: Without dead ends: 657 [2021-11-07 01:40:07,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-07 01:40:07,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2021-11-07 01:40:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 1.5259146341463414) internal successors, (1001), 656 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:07,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1001 transitions. [2021-11-07 01:40:07,252 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1001 transitions. Word has length 106 [2021-11-07 01:40:07,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:07,255 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1001 transitions. [2021-11-07 01:40:07,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:07,256 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1001 transitions. [2021-11-07 01:40:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-07 01:40:07,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:07,272 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:07,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:07,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:07,492 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:07,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:07,493 INFO L85 PathProgramCache]: Analyzing trace with hash 469411572, now seen corresponding path program 1 times [2021-11-07 01:40:07,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:07,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069383191] [2021-11-07 01:40:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:07,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:07,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:07,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:40:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:07,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:07,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:40:08,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:40:09,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:09,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069383191] [2021-11-07 01:40:09,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069383191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:09,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:09,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:09,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882608861] [2021-11-07 01:40:09,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:09,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:09,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:09,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:09,427 INFO L87 Difference]: Start difference. First operand 657 states and 1001 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:10,518 INFO L93 Difference]: Finished difference Result 1433 states and 2205 transitions. [2021-11-07 01:40:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:10,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-11-07 01:40:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:10,528 INFO L225 Difference]: With dead ends: 1433 [2021-11-07 01:40:10,528 INFO L226 Difference]: Without dead ends: 916 [2021-11-07 01:40:10,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-11-07 01:40:10,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2021-11-07 01:40:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 1.5202185792349727) internal successors, (1391), 915 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1391 transitions. [2021-11-07 01:40:10,593 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1391 transitions. Word has length 170 [2021-11-07 01:40:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:10,596 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 1391 transitions. [2021-11-07 01:40:10,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1391 transitions. [2021-11-07 01:40:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-07 01:40:10,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:10,605 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:10,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:10,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:10,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:10,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:10,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1159815289, now seen corresponding path program 1 times [2021-11-07 01:40:10,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:10,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062421743] [2021-11-07 01:40:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:10,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:10,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:10,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:10,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:40:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:11,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:11,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-07 01:40:12,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-07 01:40:13,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:13,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062421743] [2021-11-07 01:40:13,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062421743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:13,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:13,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:13,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711344005] [2021-11-07 01:40:13,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:13,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:13,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:13,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:13,299 INFO L87 Difference]: Start difference. First operand 916 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:14,136 INFO L93 Difference]: Finished difference Result 1949 states and 2980 transitions. [2021-11-07 01:40:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:14,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-11-07 01:40:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:14,148 INFO L225 Difference]: With dead ends: 1949 [2021-11-07 01:40:14,148 INFO L226 Difference]: Without dead ends: 1173 [2021-11-07 01:40:14,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:14,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-07 01:40:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2021-11-07 01:40:14,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1172 states have (on average 1.515358361774744) internal successors, (1776), 1172 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1776 transitions. [2021-11-07 01:40:14,213 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1776 transitions. Word has length 234 [2021-11-07 01:40:14,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:14,215 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1776 transitions. [2021-11-07 01:40:14,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:14,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1776 transitions. [2021-11-07 01:40:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-07 01:40:14,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:14,224 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:14,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:14,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:14,440 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2069103727, now seen corresponding path program 1 times [2021-11-07 01:40:14,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:14,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696920563] [2021-11-07 01:40:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:14,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:14,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:14,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:14,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:40:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:15,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:15,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-07 01:40:16,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-07 01:40:17,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:17,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696920563] [2021-11-07 01:40:17,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696920563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:17,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:17,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:17,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449936512] [2021-11-07 01:40:17,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:17,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:17,491 INFO L87 Difference]: Start difference. First operand 1173 states and 1776 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:18,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:18,286 INFO L93 Difference]: Finished difference Result 2463 states and 3748 transitions. [2021-11-07 01:40:18,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:18,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2021-11-07 01:40:18,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:18,301 INFO L225 Difference]: With dead ends: 2463 [2021-11-07 01:40:18,301 INFO L226 Difference]: Without dead ends: 1430 [2021-11-07 01:40:18,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:18,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-11-07 01:40:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2021-11-07 01:40:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 1.5108467459762072) internal successors, (2159), 1429 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2159 transitions. [2021-11-07 01:40:18,387 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2159 transitions. Word has length 306 [2021-11-07 01:40:18,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:18,388 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 2159 transitions. [2021-11-07 01:40:18,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2159 transitions. [2021-11-07 01:40:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-07 01:40:18,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:18,400 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:18,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:18,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:18,616 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:18,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2124887066, now seen corresponding path program 1 times [2021-11-07 01:40:18,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:18,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756081722] [2021-11-07 01:40:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:18,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:18,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:18,623 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:18,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:40:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:19,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:19,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-11-07 01:40:20,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-11-07 01:40:21,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:21,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756081722] [2021-11-07 01:40:21,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756081722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:21,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:21,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:21,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587881575] [2021-11-07 01:40:21,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:21,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:21,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:21,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:21,922 INFO L87 Difference]: Start difference. First operand 1430 states and 2159 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:22,666 INFO L93 Difference]: Finished difference Result 2975 states and 4509 transitions. [2021-11-07 01:40:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:22,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2021-11-07 01:40:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:22,682 INFO L225 Difference]: With dead ends: 2975 [2021-11-07 01:40:22,682 INFO L226 Difference]: Without dead ends: 1685 [2021-11-07 01:40:22,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:22,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-11-07 01:40:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1685. [2021-11-07 01:40:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 1.507125890736342) internal successors, (2538), 1684 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2538 transitions. [2021-11-07 01:40:22,776 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2538 transitions. Word has length 378 [2021-11-07 01:40:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:22,777 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 2538 transitions. [2021-11-07 01:40:22,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:22,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2538 transitions. [2021-11-07 01:40:22,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2021-11-07 01:40:22,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:22,795 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:22,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:23,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:23,012 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash 906547015, now seen corresponding path program 1 times [2021-11-07 01:40:23,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:23,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546316736] [2021-11-07 01:40:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:23,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:23,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:23,018 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:23,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:40:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:24,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:24,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 1041 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-11-07 01:40:25,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 1041 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-11-07 01:40:27,101 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:27,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546316736] [2021-11-07 01:40:27,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546316736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:27,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:27,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:27,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336189146] [2021-11-07 01:40:27,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:27,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:27,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:27,104 INFO L87 Difference]: Start difference. First operand 1685 states and 2538 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:28,452 INFO L93 Difference]: Finished difference Result 3486 states and 5267 transitions. [2021-11-07 01:40:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:28,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 449 [2021-11-07 01:40:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:28,464 INFO L225 Difference]: With dead ends: 3486 [2021-11-07 01:40:28,464 INFO L226 Difference]: Without dead ends: 1941 [2021-11-07 01:40:28,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2021-11-07 01:40:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1941. [2021-11-07 01:40:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 1.5030927835051546) internal successors, (2916), 1940 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2916 transitions. [2021-11-07 01:40:28,577 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2916 transitions. Word has length 449 [2021-11-07 01:40:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:28,578 INFO L470 AbstractCegarLoop]: Abstraction has 1941 states and 2916 transitions. [2021-11-07 01:40:28,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:28,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2916 transitions. [2021-11-07 01:40:28,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-11-07 01:40:28,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:28,591 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:28,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:28,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:28,817 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:28,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:28,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1828760135, now seen corresponding path program 1 times [2021-11-07 01:40:28,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:28,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495709996] [2021-11-07 01:40:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:28,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:28,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:28,825 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:28,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:40:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:30,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:30,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2169 backedges. 1176 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2021-11-07 01:40:31,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2169 backedges. 1176 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2021-11-07 01:40:32,905 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:32,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495709996] [2021-11-07 01:40:32,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495709996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:32,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:32,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:32,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339603380] [2021-11-07 01:40:32,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:32,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:32,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:32,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:32,909 INFO L87 Difference]: Start difference. First operand 1941 states and 2916 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:33,651 INFO L93 Difference]: Finished difference Result 4002 states and 6026 transitions. [2021-11-07 01:40:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 486 [2021-11-07 01:40:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:33,669 INFO L225 Difference]: With dead ends: 4002 [2021-11-07 01:40:33,670 INFO L226 Difference]: Without dead ends: 2201 [2021-11-07 01:40:33,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 968 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2021-11-07 01:40:33,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2201. [2021-11-07 01:40:33,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2200 states have (on average 1.4986363636363635) internal successors, (3297), 2200 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3297 transitions. [2021-11-07 01:40:33,811 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3297 transitions. Word has length 486 [2021-11-07 01:40:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:33,812 INFO L470 AbstractCegarLoop]: Abstraction has 2201 states and 3297 transitions. [2021-11-07 01:40:33,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:33,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3297 transitions. [2021-11-07 01:40:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-07 01:40:33,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:33,831 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:33,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:34,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:34,053 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 246609113, now seen corresponding path program 1 times [2021-11-07 01:40:34,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:34,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408661204] [2021-11-07 01:40:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:34,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:34,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:34,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:34,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:40:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:44,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:40:44,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:44,514 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 [2021-11-07 01:40:44,531 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 [2021-11-07 01:40:44,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:44,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:40:44,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:44,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-07 01:40:44,776 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 [2021-11-07 01:40:45,285 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-07 01:40:45,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 717 treesize of output 669 [2021-11-07 01:40:45,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:40:45,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:45,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-07 01:40:45,400 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 [2021-11-07 01:40:45,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,579 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 [2021-11-07 01:40:45,719 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-07 01:40:45,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-07 01:40:45,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:40:45,758 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 [2021-11-07 01:40:45,807 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 [2021-11-07 01:40:45,822 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 [2021-11-07 01:40:47,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2021-11-07 01:40:47,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:49,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:49,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 01:40:49,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:49,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-07 01:40:49,671 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:49,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-07 01:40:49,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:49,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-07 01:40:49,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:49,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-07 01:40:49,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:49,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-07 01:40:49,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:49,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-07 01:40:49,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:40:49,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-07 01:40:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2021-11-07 01:40:50,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:50,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408661204] [2021-11-07 01:40:50,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408661204] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:50,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:50,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:40:50,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484991783] [2021-11-07 01:40:50,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:40:50,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:40:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:40:50,404 INFO L87 Difference]: Start difference. First operand 2201 states and 3297 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:13,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:13,295 INFO L93 Difference]: Finished difference Result 4399 states and 6590 transitions. [2021-11-07 01:41:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:41:13,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 519 [2021-11-07 01:41:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:13,313 INFO L225 Difference]: With dead ends: 4399 [2021-11-07 01:41:13,314 INFO L226 Difference]: Without dead ends: 2201 [2021-11-07 01:41:13,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1029 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:41:13,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2021-11-07 01:41:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2201. [2021-11-07 01:41:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2200 states have (on average 1.4981818181818183) internal successors, (3296), 2200 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3296 transitions. [2021-11-07 01:41:13,430 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3296 transitions. Word has length 519 [2021-11-07 01:41:13,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:13,430 INFO L470 AbstractCegarLoop]: Abstraction has 2201 states and 3296 transitions. [2021-11-07 01:41:13,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:13,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3296 transitions. [2021-11-07 01:41:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-07 01:41:13,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:13,443 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:13,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:13,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:13,660 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:13,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:13,660 INFO L85 PathProgramCache]: Analyzing trace with hash -251223077, now seen corresponding path program 1 times [2021-11-07 01:41:13,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:13,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280399921] [2021-11-07 01:41:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:13,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:13,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:13,664 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:13,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:41:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:19,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:41:19,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:19,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:19,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:19,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:19,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:19,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:41:19,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:41:19,612 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-07 01:41:19,613 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 [2021-11-07 01:41:19,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:41:19,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:41:19,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:41:20,047 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 01:41:20,047 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 [2021-11-07 01:41:21,622 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:41:21,623 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 [2021-11-07 01:41:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2021-11-07 01:41:22,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2021-11-07 01:41:24,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:24,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280399921] [2021-11-07 01:41:24,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280399921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:24,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:24,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 01:41:24,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935266478] [2021-11-07 01:41:24,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:41:24,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:41:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:41:24,984 INFO L87 Difference]: Start difference. First operand 2201 states and 3296 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:19,770 INFO L93 Difference]: Finished difference Result 8318 states and 12518 transitions. [2021-11-07 01:42:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:42:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 519 [2021-11-07 01:42:19,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:19,815 INFO L225 Difference]: With dead ends: 8318 [2021-11-07 01:42:19,815 INFO L226 Difference]: Without dead ends: 6127 [2021-11-07 01:42:19,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1030 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:42:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6127 states. [2021-11-07 01:42:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6127 to 2625. [2021-11-07 01:42:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2625 states, 2624 states have (on average 1.5342987804878048) internal successors, (4026), 2624 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2625 states to 2625 states and 4026 transitions. [2021-11-07 01:42:20,090 INFO L78 Accepts]: Start accepts. Automaton has 2625 states and 4026 transitions. Word has length 519 [2021-11-07 01:42:20,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:20,091 INFO L470 AbstractCegarLoop]: Abstraction has 2625 states and 4026 transitions. [2021-11-07 01:42:20,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2625 states and 4026 transitions. [2021-11-07 01:42:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-07 01:42:20,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:20,103 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:20,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:20,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:20,323 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:42:20,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:20,324 INFO L85 PathProgramCache]: Analyzing trace with hash 819339929, now seen corresponding path program 1 times [2021-11-07 01:42:20,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:20,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428417191] [2021-11-07 01:42:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:20,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:20,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:20,330 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:20,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:42:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:32,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:42:32,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:32,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:42:32,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:42:32,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:42:32,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:42:32,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:42:32,918 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-07 01:42:32,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-07 01:42:33,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:42:33,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:42:33,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:42:33,340 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 01:42:33,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-07 01:42:36,036 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:42:36,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-07 01:42:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2021-11-07 01:42:36,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2021-11-07 01:42:38,292 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:38,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428417191] [2021-11-07 01:42:38,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428417191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:38,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:38,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 01:42:38,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15122430] [2021-11-07 01:42:38,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:42:38,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:42:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:42:38,299 INFO L87 Difference]: Start difference. First operand 2625 states and 4026 transitions. Second operand has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:43:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:42,333 INFO L93 Difference]: Finished difference Result 11056 states and 16877 transitions. [2021-11-07 01:43:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:43:42,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 519 [2021-11-07 01:43:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:42,384 INFO L225 Difference]: With dead ends: 11056 [2021-11-07 01:43:42,384 INFO L226 Difference]: Without dead ends: 8441 [2021-11-07 01:43:42,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 1030 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:43:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2021-11-07 01:43:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 3720. [2021-11-07 01:43:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3719 states have (on average 1.6141435869857488) internal successors, (6003), 3719 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:43:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6003 transitions. [2021-11-07 01:43:42,702 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6003 transitions. Word has length 519 [2021-11-07 01:43:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:42,703 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6003 transitions. [2021-11-07 01:43:42,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:43:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6003 transitions. [2021-11-07 01:43:42,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-07 01:43:42,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:42,717 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:43:42,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:42,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:43:42,932 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:43:42,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1068795037, now seen corresponding path program 1 times [2021-11-07 01:43:42,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:43:42,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763397392] [2021-11-07 01:43:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:42,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:43:42,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:43:42,936 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:43:42,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e00d477-7b5b-44f6-8e37-26c5f06ae950/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:44:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:44:09,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-07 01:44:09,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:06,264 WARN L207 SmtUtils]: Spent 1.94 m on a formula simplification. DAG size of input: 59 DAG size of output: 15 [2021-11-07 01:46:06,266 INFO L354 Elim1Store]: treesize reduction 177, result has 15.3 percent of original size [2021-11-07 01:46:06,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 5166 treesize of output 5178 [2021-11-07 01:46:06,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5165 treesize of output 5129 [2021-11-07 01:46:06,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:06,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79473 [2021-11-07 01:46:06,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:06,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216788 [2021-11-07 01:46:06,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:06,443 INFO L190 IndexEqualityManager]: detected not equals via solver